Chromosome 5

Chromosome 5 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 5 spans about 182 million base pairs (the building blocks of DNA) and represents almost 6% of the total DNA in cells. Chromosome 5 is the 5th largest human chromosome, yet has one of the lowest gene densities. This is partially explained by numerous gene-poor regions that display a remarkable degree of non-coding and syntenic conservation with non-mammalian vertebrates, suggesting they are functionally constrained.

Because chromosome 5 is responsible for many forms of growth and development (cell divisions) changes may cause cancers. One example would be acute myeloid leukemia (AML).

Number of genes
The following are some of the gene count estimates of human chromosome 5. 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.

Gene list
The following is a partial list of genes on human chromosome 5. For complete list, see the link in the infobox on the right. • ABLIM3: encoding protein Actin-binding LIM protein 3

• ADAMTS2: ADAM metallopeptidase with thrombospondin type 1 motif, 2

• AGXT2: Alanine-glyoxylate aminotransferase 2

• ANKRD31: encoding protein Ankyrin repeat domain 31

• APBB3: encoding protein Amyloid beta A4 precursor protein-binding family B member 3

• APC: adenomatosis polyposis coli

• ARL15: encoding protein ADP-ribosylation factor-like 15

• BRIX1: Ribosome biogenesis protein BRX1 homolog (also BXDC2)

• C1QTNF3: Complement C1q tumor necrosis factor-related protein 3

• C5orf45: Chromosome 5 open reading frame 45

• C5orf47: encoding protein Chromosome 5 open reading frame 47

• C5orf49: encoding protein Chromosome 5 open reading frame 49

• CAST: Calpastatin

• CDO1: encoding protein Cysteine dioxygenase type 1

• CPLANE1: Ciliogenesis And Planar Polarity Effector 1

• CPLX2: Complexin-2

• CREBRF: encoding protein CREB3 regulatory factor

• CXXC5: CXXC-type zing finger protein 5

• DPYSL3: Dihydropyrimidinase-like protein 3

• EGR1: early growth response protein 1

• ERAP1: endoplasmic reticulum aminopeptidase 1 (previously called ARTS-1)

• ERAP2: endoplasmic reticulum aminopeptidase 2

• ESM1: Endothelial cell-specific molecule 1

• DTDST: diastrophic dysplasia sulfate transporter

• EIF4E1B: encoding protein Eukaryotic translation initiation factor 4E family member 1B

• ERCC8: excision repair cross-complementing rodent repair deficiency, complementation group 8

• FAF2: encoding protein Fas associated factor family member 2

• FAM172A: encoding protein UPF0528 protein FAM172A

• FAM105B: encoding protein Family with sequence similarity 105, member B

• FAM114A2: encoding protein FAM114A2

• FAM71B: encoding protein Family with sequence similarity 71 member B

• FASTKD3: FAST kinase domain-containing protein 3

• FBXL7: F-box/LRR-repeat protein 7

• FCHSD1: FCH and double SH3 domain protein 1

• FGF1: fibroblast growth factor 1 (acidic fibroblast growth factor)

• FGFR4: fibroblast growth factor receptor 4

• GM2A: GM2 ganglioside activator

• GNPDA1: Glucosamine-6-phosphate isomerase 1

• GPBP1: Vasculin

• HEXB: hexosaminidase B (beta polypeptide)

• HMGXB3: encoding protein HMG-box containing 3

• IK: Protein Red

• IRX1: Iroquois-class homeodomain protein (human)

• LARP1: La-related protein 1

• LMAN2: Lectin mannose binding 2

• LNCR3 encoding protein Lung cancer susceptibility 3

• LPCAT1: Lysophosphatidylcholine acyltransferase 1

• LYRM7: encoding protein LYR motif containing 7

• LYSMD3: LysM and putative peptidoglycan-binding domain-containing protein 3

• MAN2A1: Alpha-mannosidase 2

• MASS1: monogenic, audiogenic seizure susceptibility 1 homolog (mouse)

• MCC: Colorectal mutant cancer protein

• MCCC2: methylcrotonoyl-Coenzyme A carboxylase 2 (beta)

• MCEF: transcription factor AF4/FMR2 family, member 4

• MEF2C: Myocyte-specific enhancer factor 2C

• MEF2C-AS1: encoding protein MEF2C antisense RNA 1

• MGAT1: Mannosyl (alpha-1,3-)-glycoprotein beta-1,2-N-acetylglucosaminyltransferase

• MINAR2: encoding protein Kiaa1024 like

• MIR1271: encoding MicroRNA 1271

• MIR146A: microRNA 146a

• MTRR: 5-methyltetrahydrofolate-homocysteine methyltransferase reductase

• MZB1: Marginal zone B and B1 cell-specific protein

• NIPBL: Nipped-B homolog (Drosophila)

• NREP: Neuronal regeneration related protein

• NSA2 encoding protein TGF beta-inducible nuclear protein 1

• NSD1: Transcription coregulator protein

• NSUN2: NOP2/Sun domain family, member 2

• NR2F1: Nuclear hormone receptor

• NSG2: encoding protein Hmp19 protein

• NUDCD2: NudC domain-containing protein 2

• P4HA2: Prolyl 4-hydroxylase subunit alpha-2

• PCBD2: Pterin-4-alpha-carbinolamine dehydratase 2

• PELO: Pelota homolog

• PGGT1B: encoding protein Protein geranylgeranyltransferase type I subunit beta

• PHAX: Phosphorylated adapter for RNA export

• Pikachurin: Responsible for the functioning of the ribbon synapses; allows the eye to track moving objects

• PFDN1: Prefoldin subunit 1

• POLR3G: encoding protein Polymerase (RNA) III (DNA directed) polypeptide G (32kD)

• PPIP5K2: Diphosphoinositol pentakisphosphate kinase 2

• PRCC1: Proline-rich coiled coil 1

• PRR16: encoding protein Proline-rich protein 16

• PURA: Purine-rich element-binding protein A

• PWWP2A: encoding protein PWWP domain containing 2A

• RANBP3L: encoding protein RAN binding protein 3-like

• RASGEF1C: encoding protein RasGEF domain family member 1C

• RMND5B: Required for meiotic nuclear division 5 homolog B

• SFXN1: Sideroflexin-1

• SKIV2L2: Ski2 like RNA helicase 2

• SLC22A5: solute carrier family 22 (organic cation transporter), member 5

• SLC26A2: solute carrier family 26 (sulfate transporter), member 2

• SH3TC2: domain and tetratricopeptide repeats 2

• SLCO4C1: Solute carrier organic anion transporter family member 4c1

• SLU7: pre-mRNA-splicing factor SLU7

• SMN1: survival motor neuron 1, telomeric

• SMN2: survival motor neuron 2, centromeric

• SNCAIP: synuclein, alpha interacting protein (synphilin)

• SPEF2: Sperm flagellar protein 2

• SPINK5: serine protease inhibitor Kazal-type 5 (LEKTI)

• SPINK6: serine protease inhibitor Kazal-type 6

• SPINK9: serine protease inhibitor Kazal-type 9 (LEKTI-2)

• SPZ1: Spermatogenic leucine zipper protein 1

• STC2: Stanniocalcin-2

• TBCA: Tubulin-specific chaperone A

• TCOF1: Treacher Collins-Franceschetti syndrome 1

• TGFBI: keratoepithelin

• THG1L: Probable tRNA(His) guanylyltransferase

• TICAM2: TIR domain-containing adapter molecule 2

• TMEM171: encoding protein Transmembrane protein 171

• TNFAIP8: Tumor necrosis factor, alpha-induced protein 8

• TSSK1B: encoding protein Testis specific serine kinase 1b

• TTC37: Tetratricopeptide repeat domain 37

• UPF0488: encodes G protein-coupled receptor protein signaling pathway

• YIPF5: Yip1 domain family member 5

• YTHDC2: encoding protein YTH domain containing 2

• ZBED3: Zinc finger BED domain-containing protein 3

• ZNF608: encoding protein Zinc finger protein 608

Diseases and disorders
The following are some of the diseases related to genes located on chromosome 5:


 * Attention-deficit/hyperactivity disorder
 * Achondrogenesis type 1B
 * Atelosteogenesis, type II
 * Bipolar disorder
 * Bosch-Boonstra-Schaaf optic atrophy syndrome
 * Charcot–Marie–Tooth disease, type 4
 * Cockayne syndrome
 * Cornelia de Lange syndrome
 * Corneal dystrophy of Bowman layer
 * Cri du chat
 * Diastrophic dysplasia
 * Ehlers-Danlos syndrome
 * Familial adenomatous polyposis
 * Granular corneal dystrophy type I
 * Granular corneal dystrophy type II
 * GM2-gangliosidosis, AB variant
 * Homocystinuria
 * 3-Methylcrotonyl-CoA carboxylase deficiency
 * Myelodysplastic syndrome
 * Netherton syndrome
 * Nicotine dependency
 * Parkinson's disease
 * Primary carnitine deficiency
 * Recessive multiple epiphyseal dysplasia
 * Sandhoff disease
 * Spinal muscular atrophy
 * Sotos Syndrome
 * Survival motor neuron spinal muscular atrophy
 * Treacher Collins syndrome
 * Tricho-hepato-enteric syndrome
 * Usher syndrome

Chromosomal conditions
The following conditions are caused by changes in the structure or number of copies of chromosome 5:
 * Cri-du-chat syndrome is caused by a deletion of the end of the short (p) arm of chromosome 5. This chromosomal change is written as 5p-. The signs and symptoms of cri-du-chat syndrome are probably related to the loss of multiple genes in this region. Researchers have not identified all of these genes or determined how their loss leads to the features of the disorder. They have discovered, however, that a larger deletion tends to result in more severe mental retardation and developmental delays in people with cri-du-chat syndrome.


 * Researchers have defined narrow regions of the short arm of chromosome 5 that are associated with particular features of cri-du-chat syndrome. A specific region designated 5p15.3 is associated with a cat-like cry, and a nearby region called 5p15.2 is associated with mental retardation, small head (microcephaly), and distinctive facial features.


 * Familial Adenomatous Polyposis is caused by a deletion of the APC tumor suppressor gene on the long (q) arm of chromosome 5. This chromosomal change results in thousands of colonic polyps which gives the patient a 100% risk of colon cancer if total colectomy is not done.
 * Chromosome 5q deletion syndrome is caused by the deletion of the q arm (long arm) of chromosome 5. This deletion has been linked to several blood related disorders including Myelodysplastic syndrome and Erythroblastopenia. This is a different condition than Cri-du-chat which was mentioned above.
 * Other changes in the number or structure of chromosome 5 can have a variety of effects, including delayed growth and development, distinctive facial features, birth defects, and other medical problems. Changes to chromosome 5 include an extra segment of the short (p) or long (q) arm of the chromosome in each cell (partial trisomy 5p or 5q), a missing segment of the long arm of the chromosome in each cell (partial monosomy 5q), and a circular structure called ring chromosome 5. A ring chromosome occurs when both ends of a broken chromosome are reunited.