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Aequorin

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519:, and does not disrupt cell functions or embryo development. Moreover, the light emitted by the oxidation of coelenterazine does not depend on any optical excitation, so problems with auto-fluorescence are eliminated. The primary limitation of aequorin is that the prosthetic group coelenterazine is irreversibly consumed to produce light, and requires continuous addition of coelenterazine into the media. Such issues led to developments of other genetically encoded calcium sensors including the 3074: 40: 330:, coelenterazine-2-hydroperoxide. The binding site for the first two calcium atoms show a 20 times greater affinity for calcium than the third site. However, earlier claims that only two EF-hands bind calcium were questioned when later structures indicated that all three sites can indeed bind calcium. Thus, 585:
ruled that the FTC and the state of New York could proceed with their lawsuit against Quincy Bioscience for its claims that Prevagen can improve memory. The order came less than two weeks after the parties argued the case before a three-judge panel of the circuit, where company lawyers admitted they
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for the measurement of intracellular Ca levels. The early successful purification of aequorin led to the first experiments involving the injection of the protein into the tissues of living animals to visualize the physiological release of calcium in the muscle fibers of a barnacle. Since then, the
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As of September 21, 2020, Quincy Bioscience agreed to settle the claims that it misrepresented its Prevagen products as supporting brain health and helping with memory loss. Under the terms of the settlement, eligible purchasers applying by October 26, 2020, for purchases made from 2007
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Chemical characterization of aequorin indicates the protein is somewhat resilient to harsh treatments. Aequorin is heat resistant. Held at 95 °C for 2 minutes the protein lost only 25% activity. Denaturants such as 6-M urea or 4-M guanidine hydrochloride did not destroy the protein.
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did not "dispute that if you look across the entire 211 people who completed the study there was no statistically significant difference". The court vigorously dismissed allegations by the company lawyers that the FTC pursued its action for political reasons.
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Prior to the suit, a clinical trial run by researchers employed by Quincy Bioscience "found no overall benefit compared to a placebo for its primary endpoints involving memory and cognition", while the company's advertising misleadingly cited a few contested
401:, and led to the idea that the animals somehow store oxygen. It was later discovered that the apoprotein can stably bind coelenterazine-2-hydroperoxide, and oxygen is required for the regeneration to this active form of aequorin. However, in the presence of 594: 1875:
Yamano K, Mori K, Nakano R, Kusunoki M, Inoue M, Satoh M (2007). "Identification of the functional expression of adenosine A3 receptor in pancreas using transgenic mice expressing jellyfish apoaequorin".
574:, Case No. 18-cv-12416, D. NJ.) was dismissed in the District court, but an appeal seeking to overturn the dismissal was filed. The suit was consolidated with another against Quincy Pharmaceuticals, 555:
that the product improves memory, provides cognitive benefits, and is "clinically shown" to work. According to the FTC, "the marketers of Prevagen preyed on the fears of older consumers experiencing
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Rembold CM, Kendall JM, Campbell AK (January 1997). "Measurement of changes in sarcoplasmic reticulum in rat tail artery with targeted apoaequorin delivered by an adenoviral vector".
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of the animal, and coelenterazine is the substrate whose oxidation the enzyme catalyzes. When coelenterazine is bound, it is called aequorin. Notably, the protein contains three
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had noted that the bioluminescence appears as a ring around the bell, and occurs even in the absence of air. This was remarkable because most bioluminescence reactions require
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Masuda H, Takenaka Y, Shikamoto Y, Kagawa M, Mizuno H, Tsuji FI (2003). "Chromatography of isoforms of recombinant apoaequorin and method for the preparation of aequorin".
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motifs that function as binding sites for Ca ions. The protein is a member of the superfamily of the calcium-binding proteins, of which there are some 66 subfamilies.
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Zhou Y, Yang W, Kirberger M, Lee HW, Ayalasomayajula G, Yang JJ (2006). "Prediction of EF-hand calcium-binding proteins and analysis of bacterial EF-hand proteins".
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Shimomura O, Johnson FH, Saiga Y (1962). "Extraction, purification and properties of aequorin, a bioluminescent protein from the luminous hydromedusan, Aequorea".
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Charbonneau H, Walsh KA, McCann RO, Prendergast FG, Cormier MJ, Vanaman TC (1985). "Amino acid sequence of the calcium-dependent photoprotein aequorin".
2377: 1615:"Blue fluorescent protein from the calcium-sensitive photoprotein aequorin: catalytic properties for the oxidation of coelenterazine as an oxygenase" 2618: 2373: 420:
of 465 nm) is emitted. Before coelenteramide is exchanged out, the entire protein is still fluorescent blue. because of the connection between
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from the animal. Because the genome has not been sequenced, it is unclear if the cDNA variants can account for all of the isoforms of the protein.
1254:"Blue fluorescent protein from the calcium-sensitive photoprotein aequorin is a heat-resistant enzyme, catalyzing the oxidation of coelenterazine" 1801:"Transient expression of apoaequorin in zebrafish embryos: extending the ability to image calcium transients during later stages of development" 1293:
Prasher D, McCann RO, Cormier MJ (1985). "Cloning and expression of the cDNA coding for aequorin, a bioluminescent calcium-binding protein".
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Aequorin has a number of advantages over other Ca indicators. Because the protein is large, it has a low leakage rate from cells compared to
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to find favorable results. She wrote that their cited safety studies were all rat studies and their claim that apoaequorin crosses the
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ions, the protein undergoes a conformational change and converts its prosthetic group, coelenterazine-2-hydroperoxide, into excited
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to measure Ca concentration. Coelenterazine is a hydrophobic molecule, and therefore is easily taken up across plant and fungal
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for the class of consumers who purchased Prevagen over the previous four years. The trial in the case was set for October 2020.
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Head JF, Inouye S, Teranishi K, Shimomura O (2000). "The crystal structure of the photoprotein aequorin at 2.3 Ă… resolution".
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studies show that all three calcium-binding sites are active but only two ions are needed to trigger the enzymatic reaction.
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Apoaequorin is an ingredient in "Prevagen", which is marketed by Quincy Bioscience as a memory supplement. In 2017, the US
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Shimomura O, Johnson FH (1970). "Calcium binding, quantum yield, and emitting molecule in aequorin bioluminescence".
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warns that Apoaequorin "is unlikely to be absorbed to a significant degree; instead it degrades into amino acids".
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Shimomura O, Johnson FH, Morise H (1974). "Mechanism of the luminescent intramolecular reaction of aequorin".
623: 2398: 2846: 2604: 150: 67: 2528: 614: 249:. It was determined that light could be produced from extracts with seawater, and more specifically, with 2867: 2786: 516: 2939: 2707: 2697: 2523: 2165: 1669: 1571: 1485: 1341: 1009: 876: 2428: 2374:"Prevagen: How Can This Memory Supplement Flunk Its One Trial and Still Be Advertised as Effective?" 253:. It was also noted during the extraction the animal creates green light due to the presence of the 3104: 2903: 2256: 192:
the green fluorescent protein, not aequorin, although both originally derive from the same animal.
2056:"Monitoring dynamic changes in free Ca concentration in the endoplasmic reticulum of intact cells" 1424:"Oxygen and Luminescence, with a Description of Methods for Removing Oxygen from Cells and Fluids" 2836: 2760: 2722: 2191: 1901: 1595: 1509: 1443: 1033: 982: 845: 802: 759: 751: 666: 524: 515:. It lacks phenomena of intracellular compartmentalization or sequestration as is often seen for 501: 196: 1086:
Shimomura O (1995). "Luminescence of aequorin is triggered by the binding of two calcium ions".
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Shimomura O (1995). "Luminescence of aequorin is triggered by the binding of two calcium ions".
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in 1961. This involved tedious harvesting of tens of thousands of jellyfish from the docks in
204: 161: 49: 1921:"Measurement of intracellular calcium using bioluminescent aequorin expressed in human cells" 1717:"Recombinant aequorin and recombinant semi-synthetic aequorins. Cellular Ca2+ ion indicators" 2882: 2877: 2851: 2779: 2596: 2556: 2485:. United States District Court, Southern District of Florida, Miami Division. March 19, 2020 2450:"Federal Magistrate Judge Recommends Certifying Nationwide Prevagen Class Action in Florida" 2222: 2173: 2124: 2116: 2075: 2067: 2026: 1999: 1981: 1973: 1932: 1885: 1849: 1812: 1773: 1736: 1728: 1687: 1677: 1626: 1579: 1536: 1493: 1435: 1396: 1359: 1349: 1302: 1265: 1224: 1183: 1142: 1134: 1095: 1060: 1017: 966: 931: 894: 884: 829: 786: 743: 731: 704: 658: 556: 394: 301: 297: 216: 105: 2929: 2913: 2826: 2591: 497: 488:
into the culture medium of the cells to obtain a functional protein and thus use its blue
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Inouye S, Noguchi M, Sakaki Y, Takagi Y, Miyata T, Iwanaga S, Miyata T, Tsuji FI (1985).
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While the main focus of his work was on the bioluminescence, Shimomura and two others,
45: 2080: 2055: 1986: 1853: 1692: 1655: 1400: 1364: 1329: 899: 864: 3088: 2872: 2831: 2457: 2312: 2031: 2014: 1800: 1777: 1306: 1229: 1212: 833: 508: 2195: 1905: 849: 806: 763: 2821: 2654: 2252:"Does the supplement Prevagen improve memory? A court case is asking that question" 1599: 1513: 1037: 986: 609: 598: 466: 425: 189: 153: 2154:"Fluorescent indicators for Ca based on green fluorescent proteins and calmodulin" 1631: 1614: 1270: 1253: 1423: 341:
that maintains the structure of aequorin. This has also explained the need for a
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Miyawaki A, Llopis J, Heim R, McCaffery JM, Adams JA, Ikura M, Tsien RY (1997).
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Montero M, Brini M, Marsault R, Alvarez J, Sitia R, Pozzan T, Rizzuto R (1995).
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Shimomura O (2005). "The discovery of aequorin and green fluorescent protein".
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Discussions of "jellyfish DNA" that can make "glowing" animals often refer to
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Shimomura O, Johnson FH (1975). "Regeneration of the photoprotein aequorin".
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Ridgway EB, Ashley CC (1967). "Calcium transients in single muscle fibers".
1354: 1330:"Cloning and sequence analysis of cDNA for the luminescent protein aequorin" 777:
Morin JG, Hastings JW (1971). "Energy transfer in a bioluminescent system".
619: 481: 454: 331: 312: 289: 224: 157: 2236: 2227: 2210: 1995: 1962:"Aequorin-based measurements of intracellular Ca signatures in plant cells" 1937: 1920: 1897: 1826: 1682: 1640: 1408: 1279: 1213:"Mass spectrometric evidence for a disulfide bond in aequorin regeneration" 1188: 1171: 1156: 1099: 1064: 1029: 978: 889: 865:"Peroxidized coelenterazine, the active group in the photoprotein aequorin" 841: 790: 716: 708: 428:, this property was ultimately important in the discovery of the luciferin 39: 2479:"Report and Recommendations on Plaintiff's Motion for Class Certification" 2187: 2138: 2089: 2040: 1946: 1861: 1817: 1785: 1750: 1591: 1548: 1373: 1314: 1238: 1197: 1107: 1072: 943: 798: 678: 2284: 2103:
Kendall JM, Badminton MN, Sala-Newby GB, Campbell AK, Rembold CM (1996).
1701: 1505: 1138: 908: 532: 416:. As the excited coelenteramide relaxes to the ground state, blue light ( 354: 327: 241: 88: 1540: 1121:
Deng L, Vysotski ES, Markova SV, Liu ZJ, Lee J, Rose J, Wang BC (2005).
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revealed that aequorin binds coelenterazine and oxygen in the form of a
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and that light could be produced even in the absence of oxygen. Later,
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was studied decades before the protein was isolated from the animal by
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Apoaequorin, the protein portion of aequorin, is an ingredient in the
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in the regeneration of the protein since such reagents weaken the
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United States District Court for the Southern District of Florida
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Spath, et al. v. Quincy Bioscience Holding Company, Inc., et al.
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of Aequorea. At least four copies of the gene were recovered as
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reaction, he showed that water could produce light from dried
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through July 31, 2020, could recover refunds of up to $ 70.
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entered a report and recommendations certifying a nationwide
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in 1921. Though Harvey was unable to demonstrate a classical
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in 1962. In the animal, the protein occurs together with the
257:, which changes the native blue light of aequorin to green. 2359:
University of California Berkeley School of Public Health,
2771: 2505:"Prevagen Brain Health Supplement Class Action Settlement" 2280:"Jellyfish Memory Supplement Prevagen Is a Hoax, FTC Says" 1211:
Ohmiya Y, Kurono S, Ohashi M, Fagan TF, Tsuji FI (1993).
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residues, expediting the regeneration of the aequorin.
2399:"Quincy Bioscience's Prevagen Supplement October 2018" 644: 642: 578:(Case No. 17-cv-784, D. NJ), which was the lead case. 440:
Since the emitted light can be easily detected with a
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United States Court of Appeals for the Second Circuit
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Other studies have shown the presence of an internal
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of higher eukaryotes, making aequorin suitable as a
307:, the luciferin. This is to say, apoaequorin is the 2958: 2922: 2891: 2860: 2809: 2750: 2731: 2643: 2363:, "Forget Jellyfish Protein", Winter, 2017–18, p. 6 2013:Blinks JR, Wier WG, Hess P, Prendergast FG (1982). 1088:
Biochemical and Biophysical Research Communications
130: 120: 115: 99: 94: 82: 74: 62: 57: 32: 2015:"Measurement of Ca concentrations in living cells" 1715:Shimomura O, Inouye S, Musicki B, Kishi Y (1990). 296:, which has an approximate molecular weight of 21 649:Shimomura O (1995). "A short story of aequorin". 476:can effectively synthesize apoaequorin; however, 181:, while aequorin by itself generates blue light. 52:1ej3 with prosthetic group coelenterazine in blue 690: 688: 559:". Quincy said that it would fight the charges. 1661:Proceedings of the National Academy of Sciences 2435:, February 22, 2019. Retrieved March 26, 2019. 1799:Cheung CY, Webb SE, Meng A, Miller AL (2006). 2787: 2612: 8: 2405:, October 2018. Retrieved November 14, 2018. 2794: 2780: 2772: 2619: 2605: 2597: 2250:Hamilton, Martha M. (September 11, 2021). 112: 38: 2416:FTC vs. Quincy Bioscience Holding Company 2378:Center for Science in the Public Interest 2226: 2177: 2128: 2079: 2030: 1985: 1936: 1919:Sheu YA, Kricka LJ, Pritchett DB (1993). 1816: 1740: 1691: 1681: 1630: 1363: 1353: 1269: 1228: 1187: 1146: 898: 888: 3069: 638: 504:in plants, fungi, and mammalian cells. 472:Cultured cells expressing the aequorin 444:, aequorin has become a useful tool in 2443: 2441: 369:Aequorin is presumably encoded in the 29: 2557:"Apoaequorin for memory enhancement?" 626:was based solely on a dog study. The 449:protein has been widely used in many 7: 2563:from the original on 5 December 2018 2536:from the original on 5 December 2018 288:composed of two distinct units, the 2713:4-Hydroxyphenylpyruvate dioxygenase 2524:"Reader's Digest Promotes Prevagen" 2448:Mora, Michael A. (March 24, 2020). 484:. Therefore it is necessary to add 207:for its memory improvement claims. 2072:10.1002/j.1460-2075.1995.tb00233.x 25: 2522:Hall, Harriet (4 December 2018). 567:that showed slight improvements. 539:, developed by Oliver Griesbeck. 203:(FTC) has charged the maker with 3072: 1654:Shimomura O, Johnson FH (1975). 863:Shimomura O, Johnson FH (1978). 834:10.1111/j.0022-2720.2005.01441.x 628:American Pharmacists Association 576:Vanderwerff v. Quincy Bioscience 2429:"Prevagen Is Going to the Dogs" 657:(1). Biological Bulletin: 1–5. 1170:Shimomura O, Inouye S (1996). 543:Marketing and legal challenges 27:Calcium-activated photoprotein 1: 2703:Homogentisate 1,2-dioxygenase 1960:Mithöfer A, Mazars C (2002). 1854:10.1016/s0143-4160(97)90098-1 1766:Biochem. Biophys. Res. Commun 1632:10.1016/j.febslet.2006.02.065 1401:10.1016/s1046-5928(03)00186-4 1295:Biochem. Biophys. Res. Commun 1271:10.1016/j.febslet.2004.09.078 1176:Biochem. Biophys. Res. Commun 1053:Biochem. Biophys. Res. Commun 551:(FTC) charged the maker with 68:Aequorea victoria (Jellyfish) 2679:Arachidonate 15-lipoxygenase 2665:Arachidonate 12-lipoxygenase 2209:Heim N, Griesbeck O (2004). 2032:10.1016/0079-6107(82)90011-6 1778:10.1016/0006-291x(67)90592-x 1334:Proc. Natl. Acad. Sci. U.S.A 1307:10.1016/0006-291X(85)90321-3 1230:10.1016/0014-5793(93)80637-a 215:Work on aequorin began with 2718:Indoleamine 2,3-dioxygenase 2674:Arachidonate 8-lipoxygenase 2660:Arachidonate 5-lipoxygenase 1613:Inouye S, Sasaki S (2006). 480:expression yields only the 3126: 581:On February 21, 2019, the 274:green fluorescent proteins 272:in 2008 for their work on 177:to produce green light by 2950:Michaelis–Menten kinetics 2688:Linoleate 11-lipoxygenase 2585:Swiss-Prot Aequorin entry 2306:Li DK (January 9, 2017). 2278:Fox M (January 9, 2017). 1890:10.1007/s11248-007-9084-0 255:green fluorescent protein 247:Friday Harbor, Washington 175:green fluorescent protein 111: 37: 2842:Diffusion-limited enzyme 591:federal magistrate judge 549:Federal Trade Commission 451:model biological systems 201:Federal Trade Commission 179:resonant energy transfer 1355:10.1073/pnas.82.10.3154 557:age-related memory loss 2529:Science-Based Medicine 2228:10.1074/jbc.M312751200 1938:10.1006/abio.1993.1132 1683:10.1073/pnas.72.4.1546 1189:10.1006/bbrc.1996.0548 1100:10.1006/bbrc.1995.1821 1065:10.1006/bbrc.1995.1821 890:10.1073/pnas.75.6.2611 791:10.1002/jcp.1040770305 709:10.1002/jcp.1030590302 615:Science-Based Medicine 517:Voltage-sensitive dyes 2935:Eadie–Hofstee diagram 2868:Allosteric regulation 2647:: two atoms of oxygen 2511:. September 21, 2020. 2454:Daily Business Review 2019:Prog Biophys Mol Biol 1818:10.1387/ijdb.062151cc 589:On March 23, 2020, a 385:Early studies of the 2945:Lineweaver–Burk plot 2735:: one atom of oxygen 2708:Cysteine dioxygenase 2698:Catechol dioxygenase 2433:Truth in Advertising 2403:Truth in Advertising 2339:Truth in Advertising 1966:Biol. Proced. Online 1139:10.1110/ps.041142905 347:beta mercaptoethanol 235:began work into the 2380:. November 20, 2017 2257:The Washington Post 2221:(14): 14280–14286. 2170:1997Natur.388..882M 1674:1975PNAS...72.1546S 1576:1970Natur.227.1356S 1570:(5265): 1356–1357. 1541:10.1021/bi00713a016 1490:1975Natur.256..236S 1428:Biological Bulletin 1389:Protein Expr. Purif 1346:1985PNAS...82.3154I 1014:2000Natur.405..372H 936:10.1021/bi00345a006 881:1978PNAS...75.2611S 736:Biological Bulletin 697:J Cell Comp Physiol 624:blood–brain barrier 553:falsely advertising 381:Mechanism of action 268:, were awarded the 3100:Cnidarian proteins 2904:Enzyme superfamily 2837:Enzyme promiscuity 2761:Inositol oxygenase 2742:Firefly luciferase 2723:Chlorite dismutase 2695:other dioxygenase: 2590:2007-03-23 at the 2559:. Pharmacist.com. 1461:Harvey EN (1952). 1422:Harvey EN (1926). 971:10.1002/prot.21139 730:Harvey EN (1921). 197:dietary supplement 186:transgenic animals 156:isolated from the 3060: 3059: 2769: 2768: 2509:Top Class Actions 2341:. January 9, 2017 2164:(6645): 882–887. 2121:10.1042/bj3180383 2066:(22): 5467–5475. 1805:Int. J. Dev. Biol 1733:10.1042/bj2700309 1584:10.1038/2271356a0 1535:(16): 3278–3286. 1484:(5514): 236–238. 1465:. Academic Press. 1252:Inouye S (2004). 1008:(6784): 372–376. 930:(24): 6762–6771. 565:subgroup analyses 496:, as well as the 446:molecular biology 324:crystal structure 205:false advertising 199:Prevagen. The US 162:Aequorea victoria 151:calcium-activated 144: 143: 140: 139: 16:(Redirected from 3117: 3077: 3076: 3068: 2940:Hanes–Woolf plot 2883:Enzyme activator 2878:Enzyme inhibitor 2852:Enzyme catalysis 2796: 2789: 2782: 2773: 2621: 2614: 2607: 2598: 2573: 2572: 2570: 2568: 2552: 2546: 2545: 2543: 2541: 2519: 2513: 2512: 2501: 2495: 2494: 2492: 2490: 2475: 2469: 2468: 2466: 2464: 2445: 2436: 2426: 2420: 2412: 2406: 2396: 2390: 2389: 2387: 2385: 2370: 2364: 2357: 2351: 2350: 2348: 2346: 2331: 2325: 2324: 2322: 2320: 2303: 2297: 2296: 2294: 2292: 2275: 2269: 2268: 2266: 2264: 2247: 2241: 2240: 2230: 2206: 2200: 2199: 2181: 2149: 2143: 2142: 2132: 2100: 2094: 2093: 2083: 2051: 2045: 2044: 2034: 2010: 2004: 2003: 1998:. Archived from 1989: 1957: 1951: 1950: 1940: 1916: 1910: 1909: 1872: 1866: 1865: 1837: 1831: 1830: 1820: 1796: 1790: 1789: 1761: 1755: 1754: 1744: 1712: 1706: 1705: 1695: 1685: 1668:(4): 1546–1549. 1651: 1645: 1644: 1634: 1625:(8): 1977–1982. 1610: 1604: 1603: 1559: 1553: 1552: 1524: 1518: 1517: 1498:10.1038/256236a0 1473: 1467: 1466: 1458: 1452: 1451: 1419: 1413: 1412: 1384: 1378: 1377: 1367: 1357: 1325: 1319: 1318: 1290: 1284: 1283: 1273: 1264:(1–2): 105–110. 1249: 1243: 1242: 1232: 1208: 1202: 1201: 1191: 1167: 1161: 1160: 1150: 1118: 1112: 1111: 1083: 1077: 1076: 1048: 1042: 1041: 1022:10.1038/35012659 997: 991: 990: 954: 948: 947: 919: 913: 912: 902: 892: 875:(3): 2611–2615. 860: 854: 853: 817: 811: 810: 779:J. Cell. Physiol 774: 768: 767: 727: 721: 720: 692: 683: 682: 646: 395:E. Newton Harvey 311:produced in the 302:prosthetic group 217:E. Newton Harvey 113: 70: 42: 30: 21: 18:Draft:Apoaeqorin 3125: 3124: 3120: 3119: 3118: 3116: 3115: 3114: 3110:Protein methods 3095:Bioluminescence 3085: 3084: 3083: 3071: 3063: 3061: 3056: 2968:Oxidoreductases 2954: 2930:Enzyme kinetics 2918: 2914:List of enzymes 2887: 2856: 2827:Catalytic triad 2805: 2800: 2770: 2765: 2746: 2727: 2639: 2628:Oxidoreductases 2625: 2592:Wayback Machine 2581: 2576: 2566: 2564: 2554: 2553: 2549: 2539: 2537: 2521: 2520: 2516: 2503: 2502: 2498: 2488: 2486: 2477: 2476: 2472: 2462: 2460: 2447: 2446: 2439: 2427: 2423: 2413: 2409: 2397: 2393: 2383: 2381: 2372: 2371: 2367: 2361:Health After 50 2358: 2354: 2344: 2342: 2333: 2332: 2328: 2318: 2316: 2305: 2304: 2300: 2290: 2288: 2277: 2276: 2272: 2262: 2260: 2249: 2248: 2244: 2208: 2207: 2203: 2151: 2150: 2146: 2102: 2101: 2097: 2053: 2052: 2048: 2012: 2011: 2007: 1959: 1958: 1954: 1918: 1917: 1913: 1874: 1873: 1869: 1839: 1838: 1834: 1798: 1797: 1793: 1763: 1762: 1758: 1714: 1713: 1709: 1653: 1652: 1648: 1612: 1611: 1607: 1561: 1560: 1556: 1526: 1525: 1521: 1475: 1474: 1470: 1463:Bioluminescence 1460: 1459: 1455: 1440:10.2307/1536540 1421: 1420: 1416: 1386: 1385: 1381: 1340:(10): 3154–58. 1327: 1326: 1322: 1292: 1291: 1287: 1251: 1250: 1246: 1210: 1209: 1205: 1169: 1168: 1164: 1120: 1119: 1115: 1085: 1084: 1080: 1050: 1049: 1045: 999: 998: 994: 956: 955: 951: 921: 920: 916: 862: 861: 857: 819: 818: 814: 776: 775: 771: 748:10.2307/1536528 729: 728: 724: 694: 693: 686: 663:10.2307/1542194 648: 647: 640: 636: 545: 535:-based sensor, 527:, developed by 498:plasma membrane 438: 422:bioluminescence 414: 387:bioluminescence 383: 367: 292:that is called 282: 237:bioluminescence 233:Osamu Shimomura 213: 171:Osamu Shimomura 167:bioluminescence 66: 53: 28: 23: 22: 15: 12: 11: 5: 3123: 3121: 3113: 3112: 3107: 3102: 3097: 3087: 3086: 3082: 3081: 3058: 3057: 3055: 3054: 3041: 3028: 3015: 3002: 2989: 2976: 2962: 2960: 2956: 2955: 2953: 2952: 2947: 2942: 2937: 2932: 2926: 2924: 2920: 2919: 2917: 2916: 2911: 2906: 2901: 2895: 2893: 2892:Classification 2889: 2888: 2886: 2885: 2880: 2875: 2870: 2864: 2862: 2858: 2857: 2855: 2854: 2849: 2844: 2839: 2834: 2829: 2824: 2819: 2813: 2811: 2807: 2806: 2801: 2799: 2798: 2791: 2784: 2776: 2767: 2766: 2764: 2763: 2757: 2755: 2748: 2747: 2745: 2744: 2738: 2736: 2729: 2728: 2726: 2725: 2720: 2715: 2710: 2705: 2700: 2691: 2690: 2685: 2676: 2671: 2662: 2650: 2648: 2641: 2640: 2632:monooxygenases 2626: 2624: 2623: 2616: 2609: 2601: 2595: 2594: 2580: 2579:External links 2577: 2575: 2574: 2547: 2514: 2496: 2470: 2437: 2421: 2407: 2391: 2365: 2352: 2326: 2298: 2270: 2242: 2201: 2144: 2115:(2): 383–387. 2095: 2046: 2025:(1–2): 1–114. 2005: 2002:on 2005-07-28. 1952: 1931:(2): 343–347. 1911: 1884:(4): 429–435. 1878:Transgenic Res 1867: 1832: 1811:(6): 561–569. 1791: 1772:(2): 229–234. 1756: 1727:(2): 309–312. 1707: 1646: 1605: 1554: 1519: 1468: 1453: 1414: 1395:(2): 181–187. 1379: 1320: 1301:(3): 1259–68. 1285: 1244: 1223:(3): 226–228. 1203: 1162: 1133:(3): 663–675. 1113: 1094:(2): 359–363. 1078: 1059:(2): 359–363. 1043: 992: 965:(3): 643–655. 949: 914: 855: 828:(Pt 1): 1–15. 812: 785:(3): 313–318. 769: 742:(5): 280–287. 722: 684: 637: 635: 632: 612:, writing for 544: 541: 523:-based sensor 490:light emission 486:coelenterazine 467:cultured cells 437: 434: 430:coelenterazine 412: 407:coelenteramide 382: 379: 366: 363: 353:bonds between 305:coelenterazine 284:Aequorin is a 281: 278: 262:Martin Chalfie 212: 209: 142: 141: 138: 137: 132: 128: 127: 122: 118: 117: 109: 108: 103: 97: 96: 92: 91: 86: 80: 79: 76: 72: 71: 64: 60: 59: 55: 54: 46:ribbon diagram 43: 35: 34: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 3122: 3111: 3108: 3106: 3103: 3101: 3098: 3096: 3093: 3092: 3090: 3080: 3075: 3070: 3066: 3052: 3048: 3047: 3042: 3039: 3035: 3034: 3029: 3026: 3022: 3021: 3016: 3013: 3009: 3008: 3003: 3000: 2996: 2995: 2990: 2987: 2983: 2982: 2977: 2974: 2970: 2969: 2964: 2963: 2961: 2957: 2951: 2948: 2946: 2943: 2941: 2938: 2936: 2933: 2931: 2928: 2927: 2925: 2921: 2915: 2912: 2910: 2909:Enzyme family 2907: 2905: 2902: 2900: 2897: 2896: 2894: 2890: 2884: 2881: 2879: 2876: 2874: 2873:Cooperativity 2871: 2869: 2866: 2865: 2863: 2859: 2853: 2850: 2848: 2845: 2843: 2840: 2838: 2835: 2833: 2832:Oxyanion hole 2830: 2828: 2825: 2823: 2820: 2818: 2815: 2814: 2812: 2808: 2804: 2797: 2792: 2790: 2785: 2783: 2778: 2777: 2774: 2762: 2759: 2758: 2756: 2753: 2749: 2743: 2740: 2739: 2737: 2734: 2730: 2724: 2721: 2719: 2716: 2714: 2711: 2709: 2706: 2704: 2701: 2699: 2696: 2693: 2692: 2689: 2686: 2684: 2680: 2677: 2675: 2672: 2670: 2666: 2663: 2661: 2658: 2656: 2652: 2651: 2649: 2646: 2642: 2637: 2633: 2629: 2622: 2617: 2615: 2610: 2608: 2603: 2602: 2599: 2593: 2589: 2586: 2583: 2582: 2578: 2562: 2558: 2551: 2548: 2535: 2531: 2530: 2525: 2518: 2515: 2510: 2506: 2500: 2497: 2484: 2480: 2474: 2471: 2459: 2455: 2451: 2444: 2442: 2438: 2434: 2430: 2425: 2422: 2418: 2417: 2411: 2408: 2404: 2400: 2395: 2392: 2384:September 20, 2379: 2375: 2369: 2366: 2362: 2356: 2353: 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Biochem 1922: 1915: 1912: 1907: 1903: 1899: 1895: 1891: 1887: 1883: 1879: 1871: 1868: 1863: 1859: 1855: 1851: 1847: 1843: 1836: 1833: 1828: 1824: 1819: 1814: 1810: 1806: 1802: 1795: 1792: 1787: 1783: 1779: 1775: 1771: 1767: 1760: 1757: 1752: 1748: 1743: 1738: 1734: 1730: 1726: 1722: 1718: 1711: 1708: 1703: 1699: 1694: 1689: 1684: 1679: 1675: 1671: 1667: 1663: 1662: 1657: 1650: 1647: 1642: 1638: 1633: 1628: 1624: 1620: 1616: 1609: 1606: 1601: 1597: 1593: 1589: 1585: 1581: 1577: 1573: 1569: 1565: 1558: 1555: 1550: 1546: 1542: 1538: 1534: 1530: 1523: 1520: 1515: 1511: 1507: 1503: 1499: 1495: 1491: 1487: 1483: 1479: 1472: 1469: 1464: 1457: 1454: 1449: 1445: 1441: 1437: 1433: 1429: 1425: 1418: 1415: 1410: 1406: 1402: 1398: 1394: 1390: 1383: 1380: 1375: 1371: 1366: 1361: 1356: 1351: 1347: 1343: 1339: 1335: 1331: 1324: 1321: 1316: 1312: 1308: 1304: 1300: 1296: 1289: 1286: 1281: 1277: 1272: 1267: 1263: 1259: 1255: 1248: 1245: 1240: 1236: 1231: 1226: 1222: 1218: 1214: 1207: 1204: 1199: 1195: 1190: 1185: 1181: 1177: 1173: 1166: 1163: 1158: 1154: 1149: 1144: 1140: 1136: 1132: 1128: 1124: 1117: 1114: 1109: 1105: 1101: 1097: 1093: 1089: 1082: 1079: 1074: 1070: 1066: 1062: 1058: 1054: 1047: 1044: 1039: 1035: 1031: 1027: 1023: 1019: 1015: 1011: 1007: 1003: 996: 993: 988: 984: 980: 976: 972: 968: 964: 960: 953: 950: 945: 941: 937: 933: 929: 925: 918: 915: 910: 906: 901: 896: 891: 886: 882: 878: 874: 870: 866: 859: 856: 851: 847: 843: 839: 835: 831: 827: 823: 816: 813: 808: 804: 800: 796: 792: 788: 784: 780: 773: 770: 765: 761: 757: 753: 749: 745: 741: 737: 733: 726: 723: 718: 714: 710: 706: 703:(3): 223–39. 702: 698: 691: 689: 685: 680: 676: 672: 668: 664: 660: 656: 652: 645: 643: 639: 633: 631: 629: 625: 621: 617: 616: 611: 606: 602: 600: 596: 592: 587: 584: 579: 577: 573: 568: 566: 560: 558: 554: 550: 542: 540: 538: 534: 530: 526: 522: 518: 514: 511:dyes such as 510: 505: 503: 499: 495: 491: 487: 483: 479: 475: 470: 468: 464: 460: 456: 452: 447: 443: 435: 433: 431: 427: 423: 419: 415: 408: 404: 400: 396: 392: 388: 380: 378: 376: 372: 364: 362: 358: 356: 352: 348: 345:reagent like 344: 340: 339:cysteine bond 335: 333: 329: 325: 320: 318: 314: 310: 306: 303: 299: 295: 291: 287: 279: 277: 275: 271: 267: 263: 258: 256: 252: 248: 244: 243: 238: 234: 230: 226: 222: 218: 210: 208: 206: 202: 198: 193: 191: 187: 182: 180: 176: 172: 168: 164: 163: 159: 155: 152: 148: 136: 133: 129: 126: 123: 119: 114: 110: 107: 104: 102: 98: 93: 90: 87: 85: 81: 77: 73: 69: 65: 61: 56: 51: 47: 41: 36: 31: 19: 3046:Translocases 3043: 3030: 3017: 3004: 2991: 2981:Transferases 2978: 2965: 2822:Binding site 2694: 2655:lipoxygenase 2653: 2565:. Retrieved 2555:Hume, Anne. 2550: 2538:. Retrieved 2527: 2517: 2508: 2499: 2487:. Retrieved 2482: 2473: 2461:. Retrieved 2453: 2424: 2415: 2410: 2394: 2382:. Retrieved 2368: 2360: 2355: 2343:. Retrieved 2329: 2317:. Retrieved 2311: 2301: 2289:. Retrieved 2283: 2273: 2261:. Retrieved 2255: 2245: 2218: 2214: 2204: 2161: 2157: 2147: 2112: 2108: 2098: 2063: 2059: 2049: 2022: 2018: 2008: 2000:the original 1969: 1965: 1955: 1928: 1924: 1914: 1881: 1877: 1870: 1848:(1): 69–79. 1845: 1842:Cell Calcium 1841: 1835: 1808: 1804: 1794: 1769: 1765: 1759: 1724: 1720: 1710: 1665: 1659: 1649: 1622: 1618: 1608: 1567: 1563: 1557: 1532: 1529:Biochemistry 1528: 1522: 1481: 1477: 1471: 1462: 1456: 1434:(2): 89–97. 1431: 1427: 1417: 1392: 1388: 1382: 1337: 1333: 1323: 1298: 1294: 1288: 1261: 1257: 1247: 1220: 1216: 1206: 1182:(1): 77–81. 1179: 1175: 1165: 1130: 1126: 1116: 1091: 1087: 1081: 1056: 1052: 1046: 1005: 1001: 995: 962: 958: 952: 927: 924:Biochemistry 923: 917: 872: 868: 858: 825: 821: 815: 782: 778: 772: 739: 735: 725: 700: 696: 654: 650: 613: 610:Harriet Hall 607: 603: 599:class action 588: 580: 575: 571: 569: 561: 546: 536: 506: 471: 453:, including 439: 436:Applications 426:fluorescence 390: 384: 368: 359: 336: 321: 293: 283: 259: 240: 214: 194: 183: 160: 154:photoprotein 146: 145: 2817:Active site 2489:October 24, 2483:Google Docs 2215:J Biol Chem 1972:: 105–118. 1127:Protein Sci 529:Roger Tsien 502:Ca reporter 478:recombinant 442:luminometer 294:apoaequorin 286:holoprotein 270:Nobel Prize 266:Roger Tsien 125:Swiss-model 58:Identifiers 3105:EC 1.13.12 3089:Categories 3020:Isomerases 2994:Hydrolases 2861:Regulation 2567:5 December 2540:5 December 2345:January 9, 2319:January 9, 2291:January 9, 1721:Biochem. J 651:Biol. Bull 634:References 570:The suit ( 521:calmodulin 509:lipophilic 494:cell walls 482:apoprotein 418:wavelength 351:sulfhydryl 313:photocytes 300:, and the 290:apoprotein 229:photocytes 221:luciferase 121:Structures 116:Search for 95:Other data 33:Aequorin 1 2899:EC number 2463:March 24, 2109:Biochem J 1619:FEBS Lett 1258:FEBS Lett 1217:FEBS Lett 822:J Microsc 620:p-hacking 455:zebrafish 332:titration 280:Structure 225:luciferin 211:Discovery 158:hydrozoan 106:1.13.12.5 101:EC number 44:Aequorin 2923:Kinetics 2847:Cofactor 2810:Activity 2588:Archived 2561:Archived 2534:Archived 2285:NBC News 2237:14742421 2196:13745050 1996:12734562 1906:19339429 1898:17387626 1827:16741871 1641:16545379 1409:14550635 1280:15527769 1157:15689515 1030:10830969 979:16981205 959:Proteins 869:PNAS USA 850:36316988 842:15655058 807:42494355 764:10826363 717:13911999 533:troponin 531:and the 525:cameleon 391:Aequorea 365:Genetics 355:cysteine 328:peroxide 242:Aequorea 147:Aequorin 135:InterPro 63:Organism 3079:Biology 3033:Ligases 2803:Enzymes 2754:: other 2752:1.13.99 2733:1.13.12 2645:1.13.11 2458:law.com 2188:9278050 2166:Bibcode 2139:8809023 2130:1217633 2090:8521803 2041:6758036 1947:8470808 1862:9056079 1786:4383681 1751:2400391 1742:1131721 1670:Bibcode 1600:4284185 1592:4393938 1572:Bibcode 1549:4152180 1514:4176627 1486:Bibcode 1448:1536540 1374:3858813 1342:Bibcode 1315:2579647 1239:8405461 1198:8660347 1148:2279293 1108:7794244 1073:7794244 1038:4425033 1010:Bibcode 987:8904181 944:2866797 877:Bibcode 799:4397528 756:1536528 679:7654844 671:1542194 593:in the 403:calcium 317:EF hand 251:calcium 190:express 131:Domains 84:UniProt 3065:Portal 3007:Lyases 2683:ALOX15 2669:ALOX12 2235:  2194:  2186:  2158:Nature 2137:  2127:  2088:  2081:394660 2078:  2060:EMBO J 2039:  1994:  1987:145563 1984:  1945:  1904:  1896:  1860:  1825:  1784:  1749:  1739:  1702:236561 1700:  1693:432574 1690:  1639:  1598:  1590:  1564:Nature 1547:  1512:  1506:239351 1504:  1478:Nature 1446:  1407:  1372:  1365:397733 1362:  1313:  1278:  1237:  1196:  1155:  1145:  1106:  1071:  1036:  1028:  1002:Nature 985:  977:  942:  909:275832 907:  900:392612 897:  848:  840:  805:  797:  762:  754:  715:  677:  669:  537:TN-XXL 465:, and 399:oxygen 371:genome 309:enzyme 165:. Its 89:P07164 75:Symbol 2959:Types 2638:1.13) 2192:S2CID 1902:S2CID 1596:S2CID 1510:S2CID 1444:JSTOR 1034:S2CID 983:S2CID 846:S2CID 803:S2CID 760:S2CID 752:JSTOR 667:JSTOR 343:thiol 188:that 149:is a 48:from 3051:list 3044:EC7 3038:list 3031:EC6 3025:list 3018:EC5 3012:list 3005:EC4 2999:list 2992:EC3 2986:list 2979:EC2 2973:list 2966:EC1 2569:2018 2542:2018 2491:2020 2465:2020 2386:2018 2347:2017 2321:2017 2293:2017 2265:2021 2233:PMID 2184:PMID 2135:PMID 2086:PMID 2037:PMID 1992:PMID 1943:PMID 1894:PMID 1858:PMID 1823:PMID 1782:PMID 1747:PMID 1698:PMID 1637:PMID 1588:PMID 1545:PMID 1502:PMID 1405:PMID 1370:PMID 1311:PMID 1276:PMID 1235:PMID 1194:PMID 1153:PMID 1104:PMID 1069:PMID 1026:PMID 975:PMID 940:PMID 905:PMID 838:PMID 795:PMID 713:PMID 675:PMID 608:Dr. 474:gene 463:mice 459:rats 424:and 409:and 375:cDNA 322:The 264:and 2223:doi 2219:279 2174:doi 2162:388 2125:PMC 2117:doi 2113:318 2076:PMC 2068:doi 2027:doi 1982:PMC 1974:doi 1933:doi 1929:209 1886:doi 1850:doi 1813:doi 1774:doi 1737:PMC 1729:doi 1725:270 1688:PMC 1678:doi 1627:doi 1623:580 1580:doi 1568:227 1537:doi 1494:doi 1482:256 1436:doi 1397:doi 1360:PMC 1350:doi 1303:doi 1299:126 1266:doi 1262:577 1225:doi 1221:332 1184:doi 1180:221 1143:PMC 1135:doi 1096:doi 1092:211 1061:doi 1057:211 1018:doi 1006:405 967:doi 932:doi 895:PMC 885:doi 830:doi 826:217 787:doi 744:doi 705:doi 659:doi 655:189 513:DiI 393:by 389:of 298:kDa 239:of 78:N/A 50:PDB 3091:: 2636:EC 2630:: 2532:. 2526:. 2507:. 2481:. 2456:. 2452:. 2440:^ 2431:, 2401:, 2376:. 2337:. 2310:. 2282:. 2254:. 2231:. 2217:. 2213:. 2190:. 2182:. 2172:. 2160:. 2156:. 2133:. 2123:. 2111:. 2107:. 2084:. 2074:. 2064:14 2062:. 2058:. 2035:. 2023:40 2021:. 2017:. 1990:. 1980:. 1968:. 1964:. 1941:. 1927:. 1923:. 1900:. 1892:. 1882:16 1880:. 1856:. 1846:21 1844:. 1821:. 1809:50 1807:. 1803:. 1780:. 1770:29 1768:. 1745:. 1735:. 1723:. 1719:. 1696:. 1686:. 1676:. 1666:72 1664:. 1658:. 1635:. 1621:. 1617:. 1594:. 1586:. 1578:. 1566:. 1543:. 1533:13 1531:. 1508:. 1500:. 1492:. 1480:. 1442:. 1432:51 1430:. 1426:. 1403:. 1393:31 1391:. 1368:. 1358:. 1348:. 1338:82 1336:. 1332:. 1309:. 1297:. 1274:. 1260:. 1256:. 1233:. 1219:. 1215:. 1192:. 1178:. 1174:. 1151:. 1141:. 1131:14 1129:. 1125:. 1102:. 1090:. 1067:. 1055:. 1032:. 1024:. 1016:. 1004:. 981:. 973:. 963:65 961:. 938:. 928:24 926:. 903:. 893:. 883:. 873:75 871:. 867:. 844:. 836:. 824:. 801:. 793:. 783:77 781:. 758:. 750:. 740:41 738:. 734:. 711:. 701:59 699:. 687:^ 673:. 665:. 653:. 641:^ 469:. 461:, 457:, 432:. 411:CO 276:. 3067:: 3053:) 3049:( 3040:) 3036:( 3027:) 3023:( 3014:) 3010:( 3001:) 2997:( 2988:) 2984:( 2975:) 2971:( 2795:e 2788:t 2781:v 2681:/ 2667:/ 2657:: 2634:( 2620:e 2613:t 2606:v 2571:. 2544:. 2493:. 2467:. 2388:. 2349:. 2323:. 2295:. 2267:. 2239:. 2225:: 2198:. 2176:: 2168:: 2141:. 2119:: 2092:. 2070:: 2043:. 2029:: 1976:: 1970:4 1949:. 1935:: 1908:. 1888:: 1864:. 1852:: 1829:. 1815:: 1788:. 1776:: 1753:. 1731:: 1704:. 1680:: 1672:: 1643:. 1629:: 1602:. 1582:: 1574:: 1551:. 1539:: 1516:. 1496:: 1488:: 1450:. 1438:: 1411:. 1399:: 1376:. 1352:: 1344:: 1317:. 1305:: 1282:. 1268:: 1241:. 1227:: 1200:. 1186:: 1159:. 1137:: 1110:. 1098:: 1075:. 1063:: 1040:. 1020:: 1012:: 989:. 969:: 946:. 934:: 911:. 887:: 879:: 852:. 832:: 809:. 789:: 766:. 746:: 719:. 707:: 681:. 661:: 413:2 223:- 20:)

Index

Draft:Apoaeqorin

ribbon diagram
PDB
Aequorea victoria (Jellyfish)
UniProt
P07164
EC number
1.13.12.5
Swiss-model
InterPro
calcium-activated
photoprotein
hydrozoan
Aequorea victoria
bioluminescence
Osamu Shimomura
green fluorescent protein
resonant energy transfer
transgenic animals
express
dietary supplement
Federal Trade Commission
false advertising
E. Newton Harvey
luciferase
luciferin
photocytes
Osamu Shimomura
bioluminescence

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