Chromosome 19 (human)

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Chromosome 19 (human)
Human male karyotpe high resolution - Chromosome 19 cropped.png
Pair of human chromosome 19 (after G-banding).
One is from mother, one is from father.
Human male karyotpe high resolution - Chromosome 19.png
Chromosome 19 pair in human male karyogram.
Features
Length (bp) 58,617,616 bp[1]
Number of genes 2,188 [2]
2,670[3]
Type Autosome
Centromere position Metacentric[4]
Identifiers
RefSeq NC_000019
GenBank CM000681
Map of Chromosome 19
Ideogram of human chromosome 19. Mbp means mega base pair. See locus for other notation.

Chromosome 19 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 19 spans more than 58.6 million base pairs, the building material of DNA.

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. Depending on the genome annotation used, chromosome 19 contains 2,188 or 2,670 genes,[2][3] and chromosome 19 thereby has the highest gene density of all the 23 chromosomes.

Genes

The following are some of the genes located on chromosome 19:

  • KLK3: The Prostate-specific antigen (PSA)
  • NWD1: NACHT and WD repeat domain containing 1.
  • PEX11G: peroxisomal biogenesis factor 11 gamma
  • PRX: Periaxin
  • SLC5A5: Solute carrier family 5 (sodium iodide symporter), member 5
  • STK11: Serine/threonine kinase 11 (Peutz-Jeghers syndrome)
  • ZNF649: Transcriptional suppressor

Short arm

  • CACNA1A: Calcium channel, voltage-dependent, P/Q type, alpha 1A subunit (Familial hemiplegic migraine Type I). Gene map locus 19p13
  • COMP: Cartilage oligomeric matrix protein. Gene map locus 19p13.1
  • NOTCH3: Notch homolog 3 (Drosophila): Gene map locus 19p13.1-p13.2
  • GCDH: Glutaryl-Coenzyme A dehydrogenase. Gene map locus 19p13.2
  • BSG: Basigin (Ok blood group)/Extracellular matrix metalloproteinase inducer/CD147. Gene map locus 19p13.3
  • ICAM4: Landsteiner and Weiner glycoprotein. Gene map locus 19p13.3
  • NRTN: Neurturin, associated with Hirschsprung's disease: Gene locus map 19p13.3
  • HCL1: Hair Colour 1; Brown hair colour; BRHC. Gene map locus 19p13.1-q13.11 OMIM: 113750
  • EYCL1: Eye Colour 1; Eye colour, green/blue; GEY. Gene map locus 19p13.1-q13.11 OMIM: 227240
  • KLF2: Krüppel-like factor 2, also known as Lung Krüppel-like factor. Gene map locus 19p13.11 OMIM: 602016

Long arm

  • HAMP: Hepcidin antimicrobial peptide. Gene map locus 19q13.12
  • BCKDHA: Branched chain keto acid dehydrogenase E1, alpha polypeptide (maple syrup urine disease). Gene map location 19q13.1-q13.2
  • APOE: Apolipoprotein E, gene associated with Alzheimer's disease. Gene map locus 19q13.2
  • ATP1A3: ATPase. Gene map locus 19q13.31
  • DMPK: Dystrophia myotonica-protein kinase. Gene map locus 19q13.32
  • A1BG: Plasma glycoprotein, unknown function. Gene map locus 19q13.43
  • LRC: The Leukocyte Receptor Complex is a family of immunoreceptors expressed predominantly on monocytes and B cells and at lower levels on dendritic cells and natural killer (NK) cells. The LRC also includes the KIR locus. Gene map locus 19q13.4 OMIM: 604812
  • KPTN: Kaptin (actin binding protein) at the tips of stereocilia. Gene map locus 19q13.4[5]
  • FUT1: The H locus is located on chromosome 19 at 19q13.3. It contains three exons that span more than 5 kb of genomic DNA, and it encodes a fucosyltransferase that produces the H antigen on RBCs.[6]
  • FUT2: The Se locus is located on chromosome 19 at 19q13.3. It contains two exons that span about 25 kb of genomic DNA. The Se locus encodes a specific fucosyltransferase that is expressed in the epithelia of secretory tissues, such as salivary glands, the gastrointestinal tract, and the respiratory tract. The enzyme it encodes catalyzes the production of H antigen.[6]

Diseases and disorders

The following diseases are some of those related to genes on chromosome 19:[7]

References

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