Chromosome 1 (human)
| Chromosome 1 (human) | |
|---|---|
Pair of human chromosome 1 (after G-banding). One is from mother, one is from father.
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Chromosome 1 pair in human male karyogram.
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| Features | |
| Length (bp) | 247,249,719 bp |
| Number of genes | 3,958 |
| Type | Autosome |
| Centromere position | 125 Mbp[1] |
| Identifiers | |
| RefSeq | NC_000001 |
| GenBank | CM000663 |
Chromosome 1 is the designation for the largest human chromosome. Humans have two copies of chromosome 1, as they do with all of the autosomes, which are the non-sex chromosomes. Chromosome 1 spans about 249 million nucleotide base pairs, which are the basic units of information for DNA.[2] It represents about 9% of the total DNA in human cells.[3]
Identifying genes on each chromosome is an active area of genetic research. Chromosome 1 is currently thought to have 4,316 genes, exceeding previous predictions based on its size.[2] It was the last completed chromosome, sequenced two decades after the beginning of the Human Genome Project.
Contents
Genes
The following are some of the genes located on chromosome 1:
p-arm
- ACADM: acyl-Coenzyme A dehydrogenase, C-4 to C-12 straight chain
- COL11A1: collagen, type XI, alpha 1
- CPT2: carnitine palmitoyltransferase II
- DBT: dihydrolipoamide branched chain transacylase E2
- DIRAS3: DIRAS family, GTP-binding RAS-like 3
- ESPN: espin (autosomal recessive deafness 36)
- GALE: UDP-galactose-4-epimerase
- GJB3: gap junction protein, beta 3, 31kDa (connexin 31)
- HMGCL: 3-hydroxymethyl-3-methylglutaryl-Coenzyme A lyase (hydroxymethylglutaricaciduria)
- KCNQ4: potassium voltage-gated channel, KQT-like subfamily, member 4
- KIF1B: kinesin family member 1B
- MFN2: mitofusin 2
- MTHFR: 5,10-methylenetetrahydrofolate reductase (NADPH)
- MUTYH: mutY homolog (E. coli)
- NGF: Nerve Growth Factor
- PARK7: Parkinson disease (autosomal recessive, early onset) 7
- PINK1: PTEN induced putative kinase 1
- PLOD1: procollagen-lysine 1, 2-oxoglutarate 5-dioxygenase 1
- TACSTD2: tumour-associated calcium signal transducer 2
- TSHB: thyroid stimulating hormone, beta
- UROD: uroporphyrinogen decarboxylase (the gene for porphyria cutanea tarda)
q-arm
- ASPM: a brain size determinant
- CRP: C-reactive protein
- F5: coagulation factor V (proaccelerin, labile factor)
- FMO3: flavin containing monooxygenase 3
- GBA: glucosidase, beta; acid (includes glucosylceramidase) (gene for Gaucher disease)
- GLC1A: gene for glaucoma
- HFE2: hemochromatosis type 2 (juvenile)
- HPC1: gene for prostate cancer
- IRF6: gene for connective tissue formation
- LMNA: lamin A/C
- MPZ: myelin protein zero (Charcot-Marie-Tooth neuropathy 1B)
- MTR: 5-methyltetrahydrofolate-homocysteine methyltransferase
- PPOX: protoporphyrinogen oxidase
- PSEN2: presenilin 2 (Alzheimer disease 4)
- SDHB: succinate dehydrogenase complex subunit B
- TNNT2: cardiac troponin T2
- USH2A: Usher syndrome 2A (autosomal recessive, mild)
Chromosome 1 contains 263 million base pairs[4]
Diseases and disorders
There are 890 known diseases related to this chromosome. Some of these diseases are hearing loss, Alzheimer disease, glaucoma and breast cancer. Rearrangements and mutations of chromosome 1 are prevalent in cancer and many other diseases. Patterns of sequence variation reveal signals of recent selection in specific genes that may contribute to human fitness, and also in regions where no function is evident. The following diseases are some of those related to genes on chromosome 1 (which contains the most known genetic diseases of any human chromosome):
- 1q21.1 deletion syndrome
- 1q21.1 duplication syndrome
- Alzheimer disease
- Alzheimer disease, type 4
- Breast cancer
- Brooke Greenberg Disease (Syndrome X)
- Carnitine palmitoyltransferase II deficiency
- Charcot–Marie–Tooth disease, types 1 and 2
- collagenopathy, types II and XI
- congenital hypothyroidism
- Ehlers-Danlos syndrome
- Ehlers-Danlos syndrome, kyphoscoliosis type
- Factor V Leiden thrombophilia
- Familial adenomatous polyposis
- galactosemia
- Gaucher disease
- Gaucher disease type 1
- Gaucher disease type 2
- Gaucher disease type 3
- Gaucher-like disease
- Gelatinous drop-like corneal dystrophy
- Glaucoma
- Hearing loss, autosomal recessive deafness 36
- Hemochromatosis
- Hemochromatosis, type 2
- Hepatoerythropoietic porphyria
- Homocystinuria
- Hutchinson Gilford Progeria Syndrome
- 3-hydroxy-3-methylglutaryl-CoA lyase deficiency
- Hypertrophic cardiomyopathy, autosomal dominant mutations of TNNT2; hypertrophy usually mild; restrictive phenotype may be present; may carry high risk of sudden cardiac death
- maple syrup urine disease
- medium-chain acyl-coenzyme A dehydrogenase deficiency
- Microcephaly
- Muckle-Wells Syndrome
- Nonsyndromic deafness
- Nonsyndromic deafness, autosomal dominant
- Nonsyndromic deafness, autosomal recessive
- Oligodendroglioma
- Parkinson disease
- Pheochromocytoma
- porphyria
- porphyria cutanea tarda
- popliteal pterygium syndrome
- prostate cancer
- Stickler syndrome
- Stickler syndrome, COL11A1
- TAR syndrome
- trimethylaminuria
- Usher syndrome
- Usher syndrome type II
- Van der Woude syndrome
- Variegate porphyria
References
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External links
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Wikimedia Commons has media related to Human chromosome 1. |
- Lua error in package.lua at line 80: module 'strict' not found.
- Reuters Wed May 17, 2006[dead link]
- Final genome 'chapter' published BBC NEWS
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 http://vega.sanger.ac.uk/Homo_sapiens/mapview?chr=1 Chromosome size and number of genes derived from this database, retrieved 2012-03-11.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Chromosome 1
