Kromosom 6: Perbedaan antara revisi

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[[Berkas:Human male karyotpe high resolution - Chromosome 6.png|jmpl|Kromosom 6 pada [[kariogramkariotipe]] seorang pria.]]
[[Berkas:Human male karyotpe high resolution - Chromosome 6 cropped.png|jmpl|Kromosom 6 pada manusia setelah [[G banding|G-banding]]. <br/> Satu dari ibu, satu dari ayah.]]
'''Kromosom 6''' adalah salah satu dari 23 pasang [[kromosom]] pada [[manusia]]. Seorang manusia biasanya memiliki dua salinan kromosom ini. Kromosom 6 mencakup lebih dari 170 juta [[pasangan basa]] (bahan pembangun [[DNA]]) dan mewakili antara 5,5 hingga 6% dari total DNA dalam [[sel (biologi)|sel]]. Kromosom 6 berisi [[kompleks histokompatibilitas utama]] yang terdiri dari 100 gen lebih yang terkait dengan respons imun (respons kolektif dan terkoordinasi dari sistem imun tubuh terhadap pengenalan zat asing) dan berperan penting dalam [[transplantasi organ]].
 
== Gen ==
[[Antigen leukosit manusia]] berada di kromosom 6, dengan pengecualian untuk gen [[Beta-2 mikroglobulinamikroglobulin|β2-mikroglobulinamikroglobulin]] yang terletak di [[kromosom 15]], dan mengodekan permukaan sel [[antigen]] guna menyajikan [[protein]] selain fungsi-fungsi lainnya.
 
=== Jumlah gen ===
Pada 2003, keseluruhan kromosom 6 dianotasi secara manual untuk protein, menghasilkan identifikasi 1.557 gen dan 633 [[pseudogen]].<ref>{{cite journal |vauthors = Mungall AJ, Palmer SA, Sims SK, Edwards CA, Ashurst JL, Wilming L, Jones MC, Horton R, Hunt SE, Scott CE, Gilbert JG, Clamp ME, Bethel G, Milne S, Ainscough R, Almeida JP, Ambrose KD, Andrews TD, Ashwell RI, Babbage AK, Bagguley CL, Bailey J, Banerjee R, Barker DJ, Barlow KF, Bates K, Beare DM, Beasley H, Beasley O, Bird CP, Blakey S, Bray-Allen S, Brook J, Brown AJ, Brown JY, Burford DC, Burrill W, Burton J, Carder C, Carter NP, Chapman JC, Clark SY, Clark G, Clee CM, Clegg S, Cobley V, Collier RE, Collins JE, Colman LK, Corby NR, Coville GJ, Culley KM, Dhami P, Davies J, Dunn M, Earthrowl ME, Ellington AE, Evans KA, Faulkner L, Francis MD, Frankish A, Frankland J, French L, Garner P, Garnett J, Ghori MJ, Gilby LM, Gillson CJ, Glithero RJ, Grafham DV, Grant M, Gribble S, Griffiths C, Griffiths M, Hall R, Halls KS, Hammond S, Harley JL, Hart EA, Heath PD, Heathcott R, Holmes SJ, Howden PJ, Howe KL, Howell GR, Huckle E, Humphray SJ, Humphries MD, Hunt AR, Johnson CM, Joy AA, Kay M, Keenan SJ, Kimberley AM, King A, Laird GK, Langford C, Lawlor S, Leongamornlert DA, Leversha M, Lloyd CR, Lloyd DM, Loveland JE, Lovell J, Martin S, Mashreghi-Mohammadi M, Maslen GL, Matthews L, McCann OT, McLaren SJ, McLay K, McMurray A, Moore MJ, Mullikin JC, Niblett D, Nickerson T, Novik KL, Oliver K, Overton-Larty EK, Parker A, Patel R, Pearce AV, Peck AI, Phillimore B, Phillips S, Plumb RW, Porter KM, Ramsey Y, Ranby SA, Rice CM, Ross MT, Searle SM, Sehra HK, Sheridan E, Skuce CD, Smith S, Smith M, Spraggon L, Squares SL, Steward CA, Sycamore N, Tamlyn-Hall G, Tester J, Theaker AJ, Thomas DW, Thorpe A, Tracey A, Tromans A, Tubby B, Wall M, Wallis JM, West AP, White SS, Whitehead SL, Whittaker H, Wild A, Willey DJ, Wilmer TE, Wood JM, Wray PW, Wyatt JC, Young L, Younger RM, Bentley DR, Coulson A, Durbin R, Hubbard T, Sulston JE, Dunham I, Rogers J, Beck S|display-authors = 6 |title=The DNA sequence and analysis of human chromosome 6 |journal=Nature |volume=425 |issue=6960 |pages=805–11 |date=October 2003 |pmid=14574404 |doi=10.1038/nature02055 |doi-access=free |bibcode=2003Natur.425..805M }}</ref>
 
Berikut ini adalah beberapa perkiraan jumlah gen yang lebih baru. Karena para peneliti menggunakan pendekatan berbeda untuk [[anotasi DNA|penjelasan genom]], maka prediksi mereka tentang [[gen|jumlah gen]] pada setiap kromosom berbeda-beda (untuk perincian teknis, lihat [[prediksi gen]]). Proyek urutan pengodean konsensus kolaboratif yang dilakukan oleh [[Proyek Konsensus CDS|CCDS]] menggunakan strategi yang sangat konservatif. Sehingga prediksi jumlah gen CCDS menunjukkan batas yang lebih rendah pada jumlah total gen pengode protein manusia.<ref name="pmid20441615">{{cite journal| author=Pertea M, Salzberg SL| title=Between a chicken and a grape: estimating the number of human genes. | journal=Genome Biol | year= 2010 | volume= 11 | issue= 5 | pages= 206 | pmid=20441615 | doi=10.1186/gb-2010-11-5-206 | pmc=2898077 }} </ref>
 
{| class="wikitable" style="text-align:right"
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! Tanggal
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| [[Proyek Konsensus CDS|CCDS]] || 996 || || —
|style="text-align:center"| <ref name="CCDS">{{cite web | title=Search results - 6&#91;CHR&#93; AND "Homo sapiens"&#91;Organism&#93; AND ("has ccds"&#91;Properties&#93; AND alive&#91;prop&#93;) - Gene | website= NCBI |version = CCDS Release 20 for ''Homo sapiens'' | url=https://www.ncbi.nlm.nih.gov/gene?term=6%5BChr%5D%20AND%20%22Homo%20sapiens%22%5BOrganism%5D%20AND%20%28%22has%20ccds%22%5BProperties%5D%20AND%20alive%5Bprop%5D%29&cmd=DetailsSearch |date=2016-09-08 | accessdate=2017-05-28}}</ref>
| 2016-09-08
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| 2017-03-29
|-
| [[UniProt]] || 1,111 || || —
|style="text-align:center"| <ref name="UniProt">{{cite web | title=Human chromosome 6: entries, gene names and cross-references to MIM | website= UniProt | url=https://www.uniprot.org/docs/humchr06.txt |date=2018-02-28 | accessdate=2018-03-16}}</ref>
| 2018-02-28
|-
| [[National Center for Biotechnology Information|NCBI]] || 1,053 || 1,188 || 911
|style="text-align:center"| <ref name="NCBI coding">{{cite web | title=Search results - 6&#91;CHR&#93; AND "Homo sapiens"&#91;Organism&#93; AND ("genetype protein coding"&#91;Properties&#93; AND alive&#91;prop&#93;) - Gene | website=NCBI | date=2017-05-19 | url=https://www.ncbi.nlm.nih.gov/gene?term=6%5BCHR%5D%20AND%20%22Homo%20sapiens%22%5BOrganism%5D%20AND%20%28%22genetype%20protein%20coding%22%5BProperties%5D%20AND%20alive%5Bprop%5D%29&cmd=DetailsSearch | accessdate=2017-05-20}}</ref><ref name="NCBI noncoding">{{cite web | title=Search results - 6&#91;CHR&#93; AND "Homo sapiens"&#91;Organism&#93; AND ( ("genetype miscrna"&#91;Properties&#93; OR "genetype ncrna"&#91;Properties&#93; OR "genetype rrna"&#91;Properties&#93; OR "genetype trna"&#91;Properties&#93; OR "genetype scrna"&#91;Properties&#93; OR "genetype snrna"&#91;Properties&#93; OR "genetype snorna"&#91;Properties&#93;) NOT "genetype protein coding"&#91;Properties&#93; AND alive&#91;prop&#93;) - Gene | website=NCBI | date=2017-05-19 | url=https://www.ncbi.nlm.nih.gov/gene?term=6%5BCHR%5D%20AND%20%22Homo%20sapiens%22%5BOrganism%5D%20AND%20%28%28%22genetype%20miscrna%22%5BProperties%5D%20OR%20%22genetype%20ncrna%22%5BProperties%5D%20OR%20%22genetype%20rrna%22%5BProperties%5D%20OR%20%22genetype%20trna%22%5BProperties%5D%20OR%20%22genetype%20scrna%22%5BProperties%5D%20OR%20%22genetype%20snrna%22%5BProperties%5D%20OR%20%22genetype%20snorna%22%5BProperties%5D%29%20NOT%20%22genetype%20protein%20coding%22%5BProperties%5D%20AND%20alive%5Bprop%5D%29&cmd=DetailsSearch | accessdate=2017-05-20}}</ref><ref name="NCBI pseudo">{{cite web | title=Search results - 6&#91;CHR&#93; AND "Homo sapiens"&#91;Organism&#93; AND ("genetype pseudo"&#91;Properties&#93; AND alive&#91;prop&#93;) - Gene | website=NCBI | date=2017-05-19 | url=https://www.ncbi.nlm.nih.gov/gene?term=6%5BCHR%5D%20AND%20%22Homo%20sapiens%22%5BOrganism%5D%20AND%20%28%22genetype%20pseudo%22%5BProperties%5D%20AND%20alive%5Bprop%5D%29&cmd=DetailsSearch | accessdate=2017-05-20}}</ref>
| 2017-05-19
|}
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