Chromosome 3 (human)

Chromosome 3 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 3 spans almost 200 million base pairs (the building material of DNA) and represents about 6.5 percent of the total DNA in cells.

Identifying genes on each chromosome is an active area of genetic research. Because researchers use different approaches to predict the number of genes on each chromosome, the estimated number of genes varies. Chromosome 3 likely contains between 1,100 and 1,500 genes.

Genes
The following are some of the genes located on chromosome 3:

p-arm

 * ALAS1: aminolevulinate, delta-, synthase 1
 * BTD: biotinidase
 * CCR5: chemokine (C-C motif) receptor 5
 * CNTN4: Contactin 4
 * COL7A1: Collagen, type VII, alpha 1 (epidermolysis bullosa, dystrophic, dominant and recessive)
 * C3orf14-Chromosome 3 open reading frame 14: predicted DNA binding protein.
 * MITF: microphthalmia-associated transcription factor
 * MLH1: mutL homolog 1, colon cancer, nonpolyposis type 2 (E. coli)
 * OXTR: oxytocin receptor
 * PTHR1: parathyroid hormone receptor 1
 * SCN5A: sodium channel, voltage-gated, type V, alpha (long QT syndrome 3)
 * SLC25A20: solute carrier family 25 (carnitine/acylcarnitine translocase), member 20
 * TMIE: transmembrane inner ear
 * VHL: von Hippel-Lindau tumor suppressor

q-arm

 * ADIPOQ: adiponectin
 * CPOX: coproporphyrinogen oxidase (coproporphyria, harderoporphyria)
 * HGD: homogentisate 1,2-dioxygenase (homogentisate oxidase)
 * IFT122: intraflagellar transport gene 122
 * MCCC1: methylcrotonoyl-Coenzyme A carboxylase 1 (alpha)
 * PCCB: propionyl Coenzyme A carboxylase, beta polypeptide
 * PDCD10: programmed cell death 10
 * PIK3CA: phosphoinositide-3-kinase, catalytic, alpha polypeptide
 * RAB7: RAB7, member RAS oncogene family
 * RHO: rhodopsin visual pigment
 * SOX2: transcription factor
 * USH3A: Usher syndrome 3A
 * ZNF9: zinc finger protein 9 (a cellular retroviral nucleic acid binding protein)

Diseases & disorders
The following diseases are some of those related to genes on chromosome 3:
 * 3-methylcrotonyl-CoA carboxylase deficiency
 * 3q29 microdeletion syndrome
 * Alkaptonuria
 * Arrhythmogenic right ventricular dysplasia
 * Atransferrinemia
 * Autism
 * Biotinidase deficiency
 * Blepharophimosis, epicanthus inversus and ptosis type 1
 * Breast/colon/lung/pancreatic cancer
 * Brugada syndrome
 * Castillo fever
 * Carnitine-acylcarnitine translocase deficiency
 * Cataracts
 * Cerebral cavernous malformation
 * Charcot-Marie-Tooth disease, type 2
 * Charcot-Marie-Tooth disease
 * Chromosome 3q duplication syndrome
 * Coproporphyria
 * Deafness
 * Diabetes
 * Dopamine receptor
 * Dystrophic epidermolysis bullosa
 * Endplate acetlycholinesterase deficiency
 * Essential tremors
 * Glaucoma, primary open angle
 * Glycogen storage disease
 * Hailey-Hailey disease
 * Harderoporphyrinuria
 * Heart block, progressive/nonprogressive
 * Hereditary coproporphyria
 * Hereditary nonpolyposis colorectal cancer
 * HIV infection, susceptibility/resistance to
 * Hypobetalipoproteinemia, familial
 * Hypothermia
 * Leukoencephalopathy with vanishing white matter
 * Long QT syndrome
 * Lymphomas
 * Malignant hyperthermia susceptibility
 * Metaphyseal chondrodysplasia, Murk Jansen type
 * Moebius syndrome
 * Moyamoya disease
 * Mucopolysaccharidosis
 * Muir-Torre family cancer syndrome
 * Myotonic dystrophy, type 2
 * Myotonic dystrophy
 * Neuropathy, hereditary motor and sensory, Okinawa type
 * Night blindness
 * Nonsyndromic deafness, autosomal recessive
 * Nonsyndromic deafness
 * Ovarian cancer
 * Porphyria
 * Propionic acidemia
 * Protein S deficiency
 * Pseudo-Zellweger syndrome
 * Retinitis pigmentosa
 * Romano-Ward syndrome
 * Sensenbrenner syndrome
 * Septo-optic dysplasia
 * Short stature
 * Spinocerebellar ataxia
 * Sucrose intolerance
 * T-cell leukemia translocation altered gene
 * Usher syndrome type III
 * Usher syndrome (Finland)
 * Usher syndrome
 * von Hippel-Lindau syndrome
 * Waardenburg syndrome
 * Xeroderma pigmentosum, complementation group c

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