Chromosome 20

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Template:Short description Template:Infobox chromosome Chromosome 20 is one of the 23 pairs of chromosomes in humans. Chromosome 20 spans around 66 million base pairs (the building material of DNA) and represents between 2 and 2.5 percent of the total DNA in cells. Chromosome 20 was fully sequenced in 2001 and was reported to contain over 59 million base pairs.[1] Since then, due to sequencing improvements and fixes, the length of chromosome 20 has been updated to just over 66 million base pairs.[2]

Genes

Number of genes

The following are some of the gene count estimates of human chromosome 20. Because researchers use different approaches to genome annotation their predictions of the number of genes on each chromosome varies (for technical details, see gene prediction). Among various projects, the collaborative consensus coding sequence project (CCDS) takes an extremely conservative strategy. So CCDS's gene number prediction represents a lower bound on the total number of human protein-coding genes.[3]

Estimated by Protein-coding genes Non-coding RNA genes Pseudogenes Source Release date
CCDS 516 — — [4] 2016-09-08
HGNC 519 191 297 [5] 2017-05-12
Ensembl 540 594 247 [6] 2017-03-29
UniProt 550 — — [7] 2018-02-28
NCBI 555 487 333 [8][9][10] 2017-05-19

Gene list

Script error: No such module "Category see also".Template:Category see also/Category pair check The following is a partial list of genes on human chromosome 20. For complete list, see the link in the infobox on the right. Script error: No such module "Template wrapper".Script error: No such module "Check for unknown parameters".

Diseases and disorders

The following diseases are some of those related to genes on chromosome 20:[11]

Cytogenetic band

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G-bands of human chromosome 20 in resolution 850 bphs[12]
Chr. Arm[13] Band[14] ISCN
start[15] 		ISCN
stop[15] 		Basepair
start 		Basepair
stop 		Stain[16] Density
20 p 13 0 333 Script error: No such module "val". Script error: No such module "val". gneg
20 p 12.3 333 513 Script error: No such module "val". Script error: No such module "val". gpos 75
20 p 12.2 513 624 Script error: No such module "val". Script error: No such module "val". gneg
20 p 12.1 624 915 Script error: No such module "val". Script error: No such module "val". gpos 75
20 p 11.23 915 1164 Script error: No such module "val". Script error: No such module "val". gneg
20 p 11.22 1164 1275 Script error: No such module "val". Script error: No such module "val". gpos 25
20 p 11.21 1275 1441 Script error: No such module "val". Script error: No such module "val". gneg
20 p 11.1 1441 1608 Script error: No such module "val". Script error: No such module "val". acen
20 q 11.1 1608 1774 Script error: No such module "val". Script error: No such module "val". acen
20 q 11.21 1774 1927 Script error: No such module "val". Script error: No such module "val". gneg
20 q 11.22 1927 2051 Script error: No such module "val". Script error: No such module "val". gpos 25
20 q 11.23 2051 2232 Script error: No such module "val". Script error: No such module "val". gneg
20 q 12 2232 2439 Script error: No such module "val". Script error: No such module "val". gpos 75
20 q 13.11 2439 2578 Script error: No such module "val". Script error: No such module "val". gneg
20 q 13.12 2578 2758 Script error: No such module "val". Script error: No such module "val". gpos 25
20 q 13.13 2758 3077 Script error: No such module "val". Script error: No such module "val". gneg
20 q 13.2 3077 3299 Script error: No such module "val". Script error: No such module "val". gpos 75
20 q 13.31 3299 3382 Script error: No such module "val". Script error: No such module "val". gneg
20 q 13.32 3382 3493 Script error: No such module "val". Script error: No such module "val". gpos 50
20 q 13.33 3493 3770 Script error: No such module "val". Script error: No such module "val". gneg

References

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  1. ↑ Script error: No such module "Citation/CS1".
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  10. ↑ Script error: No such module "citation/CS1".
  11. ↑ Script error: No such module "Citation/CS1".
  12. ↑ Genome Decoration Page, NCBI. Ideogram data for Homo sapience (850 bphs, Assembly GRCh38.p3). Last update 2014-06-03. Retrieved 2017-04-26.
  13. ↑ "p": Short arm; "q": Long arm.
  14. ↑ For cytogenetic banding nomenclature, see article locus.
  15. ↑ a b These values (ISCN start/stop) are based on the length of bands/ideograms from the ISCN book, An International System for Human Cytogenetic Nomenclature (2013). Arbitrary unit.
  16. ↑ gpos: Region which is positively stained by G banding, generally AT-rich and gene poor; gneg: Region which is negatively stained by G banding, generally CG-rich and gene rich; acen Centromere. var: Variable region; stalk: Stalk.

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External links

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