Chromosome 20


Chromosome 20 is one of the 23 pairs of chromosomes in humans. Chromosome 20 spans around 63 million base pairs 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. Since then, due to sequencing improvements and fixes, the length of chromosome 20 has been updated to just over 63 million base pairs.

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. Among various projects, the collaborative consensus coding sequence project takes an extremely conservative strategy. So CCDS's gene number prediction represents a lower bound on the total number of human protein-coding genes.
Estimated byProtein-coding genesNon-coding RNA genesPseudogenesSourceRelease date
CCDS516——2016-09-08
HGNC5191912972017-05-12
Ensembl5405942472017-03-29
UniProt550——2018-02-28
NCBI5554873332017-05-19

Gene list

The following is a partial list of genes on human chromosome 20. For complete list, see the link in the infobox on the right.

Diseases and disorders

The following diseases are some of those related to genes on chromosome 20:
Chr.ArmBandISCN
start		ISCN
stop		Basepair
start		Basepair
stop		StainDensity
20p130333gneg
20p12.3333513gpos75
20p12.2513624gneg
20p12.1624915gpos75
20p11.239151164gneg
20p11.2211641275gpos25
20p11.2112751441gneg
20p11.114411608acen
20q11.116081774acen
20q11.2117741927gneg
20q11.2219272051gpos25
20q11.2320512232gneg
20q1222322439gpos75
20q13.1124392578gneg
20q13.1225782758gpos25
20q13.1327583077gneg
20q13.230773299gpos75
20q13.3132993382gneg
20q13.3233823493gpos50
20q13.3334933770gneg