Chromosome 9
Chromosome 9 is one of the 23 pairs of chromosomes in humans. Humans normally have two copies of this chromosome, as they normally do with all chromosomes. Chromosome 9 spans about 138 million base pairs of nucleic acids and represents between 4.0 and 4.5% of the total DNA in cells.
Genes
Number of genes
These are some of the gene count estimates of human chromosome 9. 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 by | Protein-coding genes | Noncoding RNA genes | Pseudogenes | Source | Release date |
| CCDS | 739 | — | — | 2016-09-08 | |
| HGNC | 749 | 246 | 590 | 2017-05-12 | |
| Ensembl | 775 | 788 | 663 | 2017-03-29 | |
| UniProt | 812 | — | — | 2018-02-28 | |
| NCBI | 822 | 830 | 738 | 2017-05-19 |
Gene list
The following is a partial list of genes on human chromosome 9. For a complete list, see the link in the infobox on the right.File:Ics-codablock-blood-bag sample.jpg|thumb|The ABO gene, which determines ABO blood type, is located on the long arm of this chromosome.
Diseases and disorders
The following diseases are some of those related to genes on chromosome 9:- acytosiosis
- ALA-D deficiency porphyria
- Amyotrophic lateral sclerosis
- citrullinemia
- Coronary artery disease
- chronic myelogenous leukemia
- Diaphyseal Medullary Stenosis with Malignant Fibrous Histiosytoma
- Ehlers-Danlos syndrome
- familial dysautonomia
- Friedreich ataxia
- Frontotemporal dementia
- galactosemia
- Gorlin syndrome or nevoid basal cell carcinoma syndrome
- hereditary hemorrhagic telangiectasia
- lethal congenital contracture syndrome
- nail-patella syndrome
- nonsyndromic deafness
- OCD
- polycythemia vera
- porphyria
- primary hyperoxaluria
- STXBP1
- Tangier disease
- tetrasomy 9p
- thrombotic thrombocytopenic purpura
- trisomy 9
- tuberous sclerosis
- VLDLR-associated cerebellar hypoplasia
Cytogenetic band
| Chr. | Arm | Band | ISCN start | ISCN stop | Basepair start | Basepair stop | Stain | Density |
| 9 | p | 24.3 | 0 | 127 | gneg | |||
| 9 | p | 24.2 | 127 | 268 | gpos | 25 | ||
| 9 | p | 24.1 | 268 | 451 | gneg | |||
| 9 | p | 23 | 451 | 677 | gpos | 75 | ||
| 9 | p | 22.3 | 677 | 846 | gneg | |||
| 9 | p | 22.2 | 846 | 987 | gpos | 25 | ||
| 9 | p | 22.1 | 987 | 1085 | gneg | |||
| 9 | p | 21.3 | 1085 | 1297 | gpos | 100 | ||
| 9 | p | 21.2 | 1297 | 1395 | gneg | |||
| 9 | p | 21.1 | 1395 | 1621 | gpos | 100 | ||
| 9 | p | 13.3 | 1621 | 1917 | gneg | |||
| 9 | p | 13.2 | 1917 | 2030 | gpos | 25 | ||
| 9 | p | 13.1 | 2030 | 2171 | gneg | |||
| 9 | p | 12 | 2171 | 2312 | gpos | 50 | ||
| 9 | p | 11.2 | 2312 | 2523 | gneg | |||
| 9 | p | 11.1 | 2523 | 2650 | acen | |||
| 9 | q | 11 | 2650 | 2876 | acen | |||
| 9 | q | 12 | 2876 | 3468 | gvar | |||
| 9 | q | 13 | 3468 | 3609 | gneg | |||
| 9 | q | 21.11 | 3609 | 3792 | gpos | 25 | ||
| 9 | q | 21.12 | 3792 | 3876 | gneg | |||
| 9 | q | 21.13 | 3876 | 4060 | gpos | 50 | ||
| 9 | q | 21.2 | 4060 | 4229 | gneg | |||
| 9 | q | 21.31 | 4229 | 4440 | gpos | 50 | ||
| 9 | q | 21.32 | 4440 | 4638 | gneg | |||
| 9 | q | 21.33 | 4638 | 4835 | gpos | 50 | ||
| 9 | q | 22.1 | 4835 | 5074 | gneg | |||
| 9 | q | 22.2 | 5074 | 5173 | gpos | 25 | ||
| 9 | q | 22.31 | 5173 | 5314 | gneg | |||
| 9 | q | 22.32 | 5314 | 5455 | gpos | 25 | ||
| 9 | q | 22.33 | 5455 | 5638 | gneg | |||
| 9 | q | 31.1 | 5638 | 5892 | gpos | 100 | ||
| 9 | q | 31.2 | 5892 | 6005 | gneg | |||
| 9 | q | 31.3 | 6005 | 6146 | gpos | 25 | ||
| 9 | q | 32 | 6146 | 6456 | gneg | |||
| 9 | q | 33.1 | 6456 | 6681 | gpos | 75 | ||
| 9 | q | 33.2 | 6681 | 6822 | gneg | |||
| 9 | q | 33.3 | 6822 | 6949 | gpos | 25 | ||
| 9 | q | 34.11 | 6949 | 7217 | gneg | |||
| 9 | q | 34.12 | 7217 | 7302 | gpos | 25 | ||
| 9 | q | 34.13 | 7302 | 7443 | gneg | |||
| 9 | q | 34.2 | 7443 | 7555 | gpos | 25 | ||
| 9 | q | 34.3 | 7555 | 7950 | gneg |