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Chromosome 19

Human chromosome From Wikipedia, the free encyclopedia

Chromosome 19
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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 61.7 million base pairs, the building material of DNA. It is considered the most gene-rich chromosome containing roughly 1,500 genes, despite accounting for only 2 percent of the human genome.[4][5]

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Genes

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Number of genes

The following are some of the gene count estimates of human chromosome 19. 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.[6]

More information Estimated by, Protein-coding genes ...

Gene list

The following is a partial list of genes on human chromosome 19. For complete list, see the link in the infobox on the right.

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
  • ZNF121: Zinc finger protein 121. 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
  • GTPBP3: GTP binding protein 3 19p13.11
  • KLF2: Krüppel-like factor 2, also known as Lung Krüppel-like factor. Gene map locus 19p13.11 OMIM: 602016
  • FAM32A: family with sequence similarity 32 member A 19q13.11
  • DDX39: DExD-box helicase 39. Gene map locus 19p13.12

Long arm

  • GAPDHS: glyceraldehyde-3-phosphate dehydrogenase, spermatogenic 19q13.12
  • 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
  • CIC: Capicua transcriptional repressor. Gene map locus 19q13.2
  • FCGBP: Fc fragment of IgG binding protein
  • SARS2: seryl-tRNA synthetase 2, mitochondrial. Gene map locus 19q13.2
  • ATP1A3: ATPase. Gene map locus 19q13.31
  • DMWD: DM1 locus, WD repeat containing. Gene map locus 19q13.32
  • PNMA8A: paraneoplastic Ma antigen family member 8A 19q13.32
  • DMPK: Dystrophia myotonica-protein kinase. Gene map locus 19q13.32
  • GLTSCR2: Glioma tumor suppressor candidate region gene 2 protein 19q13.33
  • 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[13]
  • 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.[14]
  • 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.[14]
  • MORT (Mortal Obligate RNA Transcript, lincRNA): Gene map locus 19q13.43
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Diseases and disorders

The following diseases are some of those related to genes on chromosome 19:[15]

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Cytogenetic band

G-banding ideograms of human chromosome 19
Thumb
G-banding ideogram of human chromosome 19 in resolution 850 bphs. Band length in this diagram is proportional to base-pair length. This type of ideogram is generally used in genome browsers (e.g. Ensembl, UCSC Genome Browser).
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G-banding patterns of human chromosome 19 in three different resolutions (400,[18] 550[19] and 850[3]). Band length in this diagram is based on the ideograms from ISCN (2013).[20] This type of ideogram represents actual relative band length observed under a microscope at the different moments during the mitotic process.[21]
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References

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