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Coding region

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544: 395: 135: 208: 197: 307: 523:. On average, there is approximately 1 protein-altering mutation every 7 coding bases, but some CCRs can have over 100 bases in sequence with no observed protein-altering mutations, some without even synonymous mutations. These patterns of constraint between genomes may provide clues to the sources of rare 514:
While it is well known that the genome of one individual can have extensive differences when compared to the genome of another, recent research has found that some coding regions are highly constrained, or resistant to mutation, between individuals of the same species. This is similar to the concept
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An electron-micrograph of DNA strands decorated by hundreds of RNAP molecules too small to be resolved. Each RNAP is transcribing an RNA strand, which can be seen branching off from the DNA. "Begin" indicates the 3' end of the DNA, where RNAP initiates transcription; "End" indicates the 5' end, where
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within a DNA sequence is straightforward, identifying coding sequences is not, because the cell translates only a subset of all open reading frames to proteins. Currently CDS prediction uses sampling and sequencing of mRNA from cells, although there is still the problem of determining which parts of
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in viruses, but would require a known coding strand to compare the potential overlapping coding strand with. An alternative method using single genome sequences would not require multiple genome sequences to execute comparisons but would require at least 50 nucleotides overlapping in order to be
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in the coding region can have very diverse effects on the phenotype of the organism. While some mutations in this region of DNA/RNA can result in advantageous changes, others can be harmful and sometimes even lethal to an organism's survival. In contrast, changes in the non-coding region may not
203:: RNA Polymerase (RNAP) uses a template DNA strand and begins coding at the promoter sequence (green) and ends at the terminator sequence (red) in order to encompass the entire coding region into the pre-mRNA (teal). The pre-mRNA is polymerised 5' to 3' and the template DNA read 3' to 5' 58:. Studying the length, composition, regulation, splicing, structures, and functions of coding regions compared to non-coding regions over different species and time periods can provide a significant amount of important information regarding gene organization and evolution of 125:
strand is not coded continuously but is interrupted by "silent" non-coding regions. This was the first indication that there needed to be a distinction between the parts of the genome that code for protein, now called coding regions, and those that do not.
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than non-coding regions. There is further research that discovered that the longer the coding strand, the higher the GC-content. Short coding strands are comparatively still GC-poor, similar to the low GC-content of the base composition translational
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occurs relatively often in both DNA and RNA viruses as an evolutionary advantage to reduce genome size while retaining the ability to produce various proteins from the available coding regions. For both DNA and RNA,
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is one form of regulation of the coding region. The gene that would have been transcribed can be silenced by targeting a specific sequence. The bases in this sequence would be blocked using
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that may exist within coding regions. Such alterations may or may not have phenotypic changes, depending on whether or not they code for different amino acids during translation.
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The evidence suggests that there is a general interdependence between base composition patterns and coding region availability. The coding region is thought to contain a higher
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compared to accessory and non-essential regions (gene-poor). However, it is still unclear whether this came about through neutral and random mutation or through a pattern of
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ultimately determines what part of the sequence becomes translated and expressed, and this process involves cutting out introns and putting together exons. Where the RNA
188:. There is also debate on whether the methods used, such as gene windows, to ascertain the relationship between GC-content and coding region are accurate and unbiased. 1172: 109:
refers to all exons within a genome, the coding region refers to a singular section of the DNA or RNA which specifically codes for a certain kind of protein.  
1395: 450:), or passed on from a parent to its offspring. Such mutated coding regions are present in all cells within the organism. Other forms of mutations are acquired ( 519:. Researchers termed these highly constrained sequences constrained coding regions (CCRs), and have also discovered that such regions may be involved in high 486:
There exist multiple transcription and translation mechanisms to prevent lethality due to deleterious mutations in the coding region. Such measures include
1443: 169:, which are changes from purine to pyrimidine or pyrimidine to purine. The transitions are less likely to change the encoded amino acid and remain a 1207:
English: The structure of a mature eukaryotic mRNA. A fully processed mRNA includes the 5' cap, 5' UTR, coding region, 3' UTR, and poly(A) tail.
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Havrilla, J. M., Pedersen, B. S., Layer, R. M., & Quinlan, A. R. (2018). A map of constrained coding regions in the human genome.
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Peretó J. (2011) Wobble Hypothesis (Genetics). In: Gargaud M. et al. (eds) Encyclopedia of Astrobiology. Springer, Berlin, Heidelberg
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https://www.khanacademy.org/science/biology/gene-expression-central-dogma/transcription-of-dna-into-rna/a/overview-of-transcription
268: 688: 264: 1079:"The nucleotide composition of microbial genomes indicates differential patterns of selection on core and accessory genomes" 341: 418:, or single base pair changes in the coding region, that code for different amino acids during translation, are called 310:
The coding region (teal) is flanked by untranslated regions, the 5' cap, and the poly(A) tail which together form the
1186: 1130:"Relationship between gene expression and GC-content in mammals: statistical significance and biological relevance" 180:
This indicates that essential coding regions (gene-rich) are higher in GC-content and more stable and resistant to
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manages the abundance of RNA or protein made in a cell, the regulation of these mechanisms can be controlled by a
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Höglund M, Säll T, Röhme D (February 1990). "On the origin of coding sequences from random open reading frames".
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published "Why Genes in Pieces" which first began to explore the idea that the gene is a mosaic—that each full
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What is a gene mutation and how do mutations occur? - Genetics Home Reference - NIH. (n.d.). Retrieved from
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binds to the promoter sequence and moves along the template strand to the coding region. RNAP then adds RNA
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Oliver JL, Marín A (September 1996). "A relationship between GC content and coding-sequence length".
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Sakharkar MK, Chow VT, Kangueane P (2004). "Distributions of exons and introns in the human genome".
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will then determine the location and time that expression will occur for a protein coding region.
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of a codon) which is usually beneficial to the organism during translation and protein formation.
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of the RNA, and so therefore, an exon would be partially made up of coding regions. The 3' and 5'
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Rogozin IB, Spiridonov AN, Sorokin AV, Wolf YI, Jordan IK, Tatusov RL, Koonin EV (May 2002).
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Furuno M, Kasukawa T, Saito R, Adachi J, Suzuki H, Baldarelli R, et al. (June 2003).
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transitions (blue) are elevated compared to transversions (red) in GC-rich coding regions.
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There are various forms of mutations that can occur in coding regions. One form is
359: 288: 166: 165:, which are changes from purine to purine or pyrimidine to pyrimidine, compared to 122: 692: 303:
chain, eventually forming the protein defined in the initial DNA coding region.
1228:"Alkylation of template strand of coding region causes effective gene silencing" 645: 463: 367: 363: 300: 276: 256: 583:
a given mRNA are actually translated to protein. CDS prediction is a subset of
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and are not passed down to offspring. Changes in the coding region can also be
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formed encompasses multiple parts important for its eventual translation into
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Bohlin J, Eldholm V, Pettersson JH, Brynildsrud O, Snipen L (February 2017).
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or potentially even embryonic lethality. Clinically validated variants and
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The coding region can be modified in order to regulate gene expression.
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Entire coding sequence lies within the bounds of a larger external gene
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Shinohara K, Sasaki S, Minoshima M, Bando T, Sugiyama H (2006-02-13).
1205: 1501:"Analytical Biases Associated with GC-Content in Molecular Evolution" 1413:
https://www.singerinstruments.com/resource/what-are-genetic-mutation/
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Yang, J. (2016, March 23). What are Genetic Mutation? Retrieved from
889: 864: 292: 245: 563:), wherein coding DNA regions occur to a greater extent in lighter ( 1487: 542: 330: 252:. This continues until the RNAP reaches the termination sequence. 206: 106: 102: 1728:
Schlub TE, Buchmann JP, Holmes EC (October 2018). Malik H (ed.).
1689:"Detecting overlapping coding sequences with pairwise alignments" 1431:
https://ghr.nlm.nih.gov/primer/mutationsanddisorders/genemutation
466:). Acquired mutations can also be a result of copy-errors during 636:
The portion of the mRNA transcription product that is translated
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and there is a clear distinction between these terms. While the
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Although this term is also sometimes used interchangeably with
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Lercher MJ, Urrutia AO, Pavlícek A, Hurst LD (October 2003).
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is composed of the coding region as well as the 3' and 5'
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in CCRs have been previously linked to disorders such as
922:"A unification of mosaic structures in the human genome" 654:
Parts of genomes that do not encode protein-coding genes
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complementary to the coding region in order to form the
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can detect overlapping coding regions, including short
474:(new); such changes are thought to occur shortly after 1334:"Recognition of the 5' splice site by the spliceosome" 94:
of the RNA, which do not code for protein, are termed
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Parts of genomes with no relevant biological function
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Molecules that do not encode proteins, so have no CDS
1562:(6B). Cold Spring Harbor Laboratory Press: 1478–87. 630:
The entire portion of the strand that is transcribed
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the longer RNA molecules are completely transcribed.
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There is often confusion between coding regions and
228:and the termination sequence on the 3' end. During 1638:Chirico N, Vianelli A, Belshaw R (December 2010). 1171:Overview of transcription. (n.d.). Retrieved from 798:Recent Advances in Nutrigenetics and Nutrigenomics 386:always result in detectable changes in phenotype. 27:Portion of gene's sequence which codes for protein 800:. Vol. 108. Academic Press. pp. 17–50. 263:. The coding region in an mRNA is flanked by the 1276:"DNA alkylation Gene Ontology Term (GO:0006305)" 1128:Sémon M, Mouchiroud D, Duret L (February 2005). 535:, developmental delay and severe heart disease. 366:cuts, however, is guided by the recognition of 291:to the coding region, 3 nucleotides at a time ( 1552:"CDS annotation in full-length cDNA sequence" 8: 1030:"DNA helix: the importance of being GC-rich" 98:regions and are not discussed on this page. 1394:: CS1 maint: numeric names: authors list ( 1301:"Eukaryotic and prokaryotic gene structure" 794:"Advances in Technologies and Study Design" 1005:"ROSALIND | Glossary | Gene coding region" 796:. In Bouchard, C.; Ordovas, J. M. (eds.). 1753: 1704: 1663: 1575: 1526: 1516: 1349: 1316: 1251: 1145: 1104: 1094: 1053: 937: 888: 161:type is altered slightly: there are more 66:. This can further assist in mapping the 506:of the third base within an mRNA codon. 393: 305: 255:After transcription and maturation, the 195: 133: 1444:"DNA proofreading and repair (article)" 676: 624:The DNA strand that codes for a protein 551:of a human, showing an overview of the 295:). The tRNAs transfer their associated 173:(especially if they occur in the third 157:GC-rich areas are also where the ratio 1387: 845: 835: 642:The other elements that make up a gene 220:, the coding region is flanked by the 82:, it is not the exact same thing: the 1474: 1472: 1425: 1423: 1421: 1407: 1405: 1187:"Translation: DNA to mRNA to Protein" 1167: 1165: 682: 680: 462:, or other environmental agents (ex. 7: 1687:Firth AE, Brown CM (February 2005). 691:. The Wellcome Trust. Archived from 1376:English: Example of silent mutation 792:Parnell, Laurence D. (2012-01-01). 422:. Other types of mutations include 806:10.1016/B978-0-12-398397-8.00002-2 533:infantile epileptic encephalopathy 287:facilitates the attachment of the 25: 687:Twyman, Richard (1 August 2003). 510:Constrained coding regions (CCRs) 398:Examples of the various forms of 1644:Proceedings. Biological Sciences 498:following replication, and the ' 1734:Molecular Biology and Evolution 352:begins in a strand of DNA. The 1640:"Why genes overlap in viruses" 963:Journal of Molecular Evolution 716:Journal of Molecular Evolution 515:of interspecies constraint in 46:), is the portion of a gene's 1: 1706:10.1093/bioinformatics/bti007 1617:10.1016/S0168-9525(02)02649-5 1191:Scitable: By Nature Education 342:regulation of gene expression 70:and developing gene therapy. 1499:Romiguier J, Roux C (2017). 1028:Vinogradov AE (April 2003). 442:Some forms of mutations are 863:Gilbert W (February 1978). 1805: 569: 1299:Shafee T, Lowe R (2017). 1096:10.1186/s12864-017-3543-7 539:Coding sequence detection 1518:10.3389/fgene.2017.00016 1373:Jonsta247 (2013-05-10), 1338:Acta Biochimica Polonica 1185:Clancy, Suzanne (2008). 1134:Human Molecular Genetics 926:Human Molecular Genetics 578:While identification of 154:like TAG, TAA, and TGA. 1305:WikiJournal of Medicine 1280:www.informatics.jax.org 1656:10.1098/rspb.2010.1052 1351:10.18388/abp.1998_4346 1232:Nucleic Acids Research 1204:Plociam (2005-08-08), 1034:Nucleic Acids Research 865:"Why genes in pieces?" 575: 525:developmental diseases 502:' which describes the 403: 315: 269:3' untranslated region 265:5' untranslated region 213: 204: 192:Structure and function 142: 1746:10.1093/molbev/msy155 1318:10.15347/wjm/2017.002 570:Further information: 546: 397: 309: 234:RNA Polymerase (RNAP) 224:on the 5' end of the 210: 199: 139:Point mutation types: 137: 1332:Konarska MM (1998). 494:during replication, 424:frameshift mutations 372:mature messenger RNA 92:untranslated regions 88:untranslated regions 38:, also known as the 975:1996JMolE..43..216O 881:1978Natur.271..501G 728:1990JMolE..30..104H 609:open reading frames 605:pairwise alignments 580:open reading frames 521:purifying selection 517:conserved sequences 354:regulatory sequence 346:regulatory sequence 333:, which create the 1605:Trends in Genetics 1568:10.1101/gr.1060303 1244:10.1093/nar/gkl005 1147:10.1093/hmg/ddi038 1046:10.1093/nar/gkg296 983:10.1007/pl00006080 939:10.1093/hmg/ddg251 736:10.1007/bf02099936 664:Non-functional DNA 576: 448:germline mutations 420:missense mutations 412:nonsense mutations 404: 350:open reading frame 316: 214: 205: 143: 1740:(10): 2572–2581. 1650:(1701): 3809–17. 767:In Silico Biology 529:de novo mutations 500:Wobble Hypothesis 452:somatic mutations 348:found before the 222:promoter sequence 54:that codes for a 16:(Redirected from 1796: 1768: 1767: 1757: 1725: 1719: 1718: 1708: 1684: 1678: 1677: 1667: 1635: 1629: 1628: 1596: 1590: 1589: 1579: 1547: 1541: 1540: 1530: 1520: 1496: 1490: 1476: 1467: 1464: 1458: 1457: 1455: 1454: 1440: 1434: 1427: 1416: 1409: 1400: 1399: 1393: 1385: 1384: 1383: 1370: 1364: 1363: 1353: 1329: 1323: 1322: 1320: 1296: 1290: 1289: 1287: 1286: 1272: 1266: 1265: 1255: 1223: 1217: 1216: 1215: 1214: 1201: 1195: 1194: 1182: 1176: 1169: 1160: 1159: 1149: 1125: 1119: 1118: 1108: 1098: 1074: 1068: 1067: 1057: 1025: 1019: 1018: 1016: 1015: 1001: 995: 994: 958: 952: 951: 941: 917: 911: 910: 892: 890:10.1038/271501a0 860: 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290: 286: 282: 278: 274: 270: 267:(5'-UTR) and 266: 262: 258: 253: 251: 247: 243: 239: 235: 231: 230:transcription 227: 223: 219: 209: 202: 201:Transcription 198: 191: 189: 187: 183: 178: 176: 172: 168: 167:transversions 164: 160: 155: 153: 148: 140: 136: 129: 127: 124: 120: 112: 110: 108: 104: 99: 97: 93: 89: 85: 81: 73: 71: 69: 65: 61: 57: 53: 49: 45: 41: 37: 33: 32:coding region 19: 1789:Biochemistry 1737: 1733: 1723: 1696: 1692: 1682: 1647: 1643: 1633: 1608: 1604: 1594: 1559: 1555: 1545: 1508: 1504: 1494: 1479: 1462: 1451:. Retrieved 1448:Khan Academy 1447: 1438: 1380:, retrieved 1375: 1368: 1341: 1337: 1327: 1308: 1304: 1294: 1283:. Retrieved 1279: 1270: 1235: 1231: 1221: 1211:, retrieved 1206: 1199: 1190: 1180: 1140:(3): 421–7. 1137: 1133: 1123: 1086: 1083:BMC Genomics 1082: 1072: 1037: 1033: 1023: 1012:. Retrieved 1008: 999: 966: 962: 956: 929: 925: 915: 872: 868: 858: 827:. Retrieved 797: 787: 770: 766: 760: 719: 715: 709: 697:. Retrieved 693:the original 589: 577: 553:human genome 513: 488:proofreading 485: 441: 405: 399: 381: 368:splice sites 360:RNA splicing 358: 339: 331:alkyl groups 325: 322: 311: 254: 248:in place of 215: 200: 179: 156: 144: 138: 123:nucleic acid 116: 100: 77: 68:human genome 43: 39: 31: 29: 1505:Front Genet 646:Nested gene 634:Mature mRNA 612:sensitive. 592:prokaryotes 460:carcinogens 364:spliceosome 312:mature mRNA 301:polypeptide 297:amino acids 281:translation 277:Poly-A tail 257:mature mRNA 238:nucleotides 163:transitions 152:stop codons 130:Composition 60:prokaryotes 18:Gene coding 1778:Categories 1453:2023-05-22 1382:2019-11-19 1285:2019-10-30 1213:2019-11-19 1089:(1): 151. 1014:2019-10-31 829:2019-11-07 671:References 596:eukaryotes 567:) regions. 547:Schematic 504:degeneracy 482:Prevention 444:hereditary 428:insertions 340:While the 327:Alkylation 319:Regulation 175:nucleotide 147:GC-content 96:non-coding 74:Definition 64:eukaryotes 1482:, 88–95. 848:ignored ( 838:cite book 744:0022-2844 572:Karyotype 557:G banding 549:karyogram 438:Formation 432:deletions 383:Mutations 378:Mutations 335:silencing 279:. 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Index

Gene coding
gene
DNA
RNA
protein
prokaryotes
eukaryotes
human genome
exon
exon
untranslated regions
untranslated regions
non-coding
exomes
exome
Walter Gilbert
nucleic acid

GC-content
stop codons
point mutation
transitions
transversions
silent mutation
nucleotide
mutation
selection


DNA

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