PLOD3

Last updated
PLOD3
Identifiers
Aliases PLOD3 , LH3, procollagen-lysine,2-oxoglutarate 5-dioxygenase 3
External IDs OMIM: 603066 MGI: 1347008 HomoloGene: 843 GeneCards: PLOD3
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_001084

NM_011962

RefSeq (protein)

NP_001075

NP_036092

Location (UCSC) Chr 7: 101.21 – 101.22 Mb Chr 5: 137.02 – 137.03 Mb
PubMed search [3] [4]
Wikidata
View/Edit Human View/Edit Mouse

Procollagen-lysine,2-oxoglutarate 5-dioxygenase 3 is an enzyme that in humans is encoded by the PLOD3 gene. [5] [6] [7]

The protein encoded by this gene is a membrane-bound homodimeric enzyme that is localized to the cisternae of the rough endoplasmic reticulum. The enzyme (cofactors iron and ascorbate) catalyzes the hydroxylation of lysyl residues in collagen-like peptides. The resultant hydroxylysyl groups are attachment sites for carbohydrates in collagen and thus are critical for the stability of intermolecular crosslinks. Some patients with Ehlers-Danlos syndrome type VIB have deficiencies in lysyl hydroxylase activity. [7]

Related Research Articles

Lysyl hydroxylases are alpha-ketoglutarate-dependent hydroxylases enzymes that catalyze the hydroxylation of lysine to hydroxylysine. Lysyl hydroxylases require iron and vitamin C as cofactors for their oxidation activity. It takes place following collagen synthesis in the cisternae (lumen) of the rough endoplasmic reticulum (ER). There are three lysyl hydroxylases (LH1-3) encoded in the human genome, namely: PLOD1, PLOD2 and PLOD3. From PLOD2 two splice variant can be expressed, where LH2b differs from LH2a by incorporating the small exon 13A. LH1 and LH3 hydroxylate lysyl residues in the collagen triple helix, whereas LH2b hydroxylates lysyl residues in the telopeptides of collagen. In addition to its hydroxylation activity, LH3 has glycosylation activity that produces either monosaccharide (Gal) or disaccharide (Glc-Gal) attached to collagen hydroxylysines.

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References

  1. 1 2 3 GRCh38: Ensembl release 89: ENSG00000106397 - Ensembl, May 2017
  2. 1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000004846 - Ensembl, May 2017
  3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. Passoja K, Rautavuoma K, Ala-Kokko L, Kosonen T, Kivirikko KI (Sep 1998). "Cloning and characterization of a third human lysyl hydroxylase isoform". Proc Natl Acad Sci U S A. 95 (18): 10482–10486. doi: 10.1073/pnas.95.18.10482 . PMC   27920 . PMID   9724729.
  6. Valtavaara M, Szpirer C, Szpirer J, Myllyla R (Jun 1998). "Primary structure, tissue distribution, and chromosomal localization of a novel isoform of lysyl hydroxylase (lysyl hydroxylase 3)". J Biol Chem. 273 (21): 12881–12886. doi: 10.1074/jbc.273.21.12881 . PMID   9582318.
  7. 1 2 "Entrez Gene: PLOD3 procollagen-lysine, 2-oxoglutarate 5-dioxygenase 3".

Further reading