Prolyl 4-hydroxylase subunit alpha-2 is an enzyme that in humans is encoded by the P4HA2gene.[1][2][3]
This gene encodes a component of prolyl 4-hydroxylase, a key enzyme in collagen synthesis composed of two identical alpha subunits and two beta subunits. The encoded protein is one of several different types of alpha subunits and provides the major part of the catalytic site of the active enzyme. In collagen and related proteins, prolyl 4-hydroxylase catalyzes the formation of 4-hydroxyproline that is essential to the proper three-dimensional folding of newly synthesized procollagen chains. Alternatively spliced transcript variants encoding different isoforms have been described.[3]
References
Notes
↑Annunen P, Helaakoski T, Myllyharju J, Veijola J, Pihlajaniemi T, Kivirikko KI (Aug 1997). "Cloning of the human prolyl 4-hydroxylase alpha subunit isoform alpha(II) and characterization of the type II enzyme tetramer. The alpha(I) and alpha(II) subunits do not form a mixed alpha(I)alpha(II)beta2 tetramer". J Biol Chem. 272 (28): 17342–8. doi:10.1074/jbc.272.28.17342. PMID9211872.
↑Frazer KA, Ueda Y, Zhu Y, Gifford VR, Garofalo MR, Mohandas N, Martin CH, Palazzolo MJ, Cheng JF, Rubin EM (Aug 1997). "Computational and biological analysis of 680 kb of DNA sequence from the human 5q31 cytokine gene cluster region". Genome Res. 7 (5): 495–512. doi:10.1101/gr.7.5.495. PMID9149945.
Nokelainen M, Nissi R, Kukkola L, et al. (2001). "Characterization of the human and mouse genes for the alpha subunit of type II prolyl 4-hydroxylase. Identification of a previously unknown alternatively spliced exon and its expression in various tissues". Eur. J. Biochem. 268 (20): 5300–9. doi:10.1046/j.0014-2956.2001.02464.x. PMID11606192.
Hieta R, Kukkola L, Permi P, et al. (2003). "The peptide-substrate-binding domain of human collagen prolyl 4-hydroxylases. Backbone assignments, secondary structure, and binding of proline-rich peptides". J. Biol. Chem. 278 (37): 34966–74. doi:10.1074/jbc.M303624200. PMID12824157.
Kukkola L, Hieta R, Kivirikko KI, Myllyharju J (2004). "Identification and characterization of a third human, rat, and mouse collagen prolyl 4-hydroxylase isoenzyme". J. Biol. Chem. 278 (48): 47685–93. doi:10.1074/jbc.M306806200. PMID14500733.
Lehner B, Semple JI, Brown SE, et al. (2004). "Analysis of a high-throughput yeast two-hybrid system and its use to predict the function of intracellular proteins encoded within the human MHC class III region". Genomics. 83 (1): 153–67. doi:10.1016/S0888-7543(03)00235-0. PMID14667819.
Koivunen P, Hirsilä M, Kivirikko KI, Myllyharju J (2006). "The length of peptide substrates has a marked effect on hydroxylation by the hypoxia-inducible factor prolyl 4-hydroxylases". J. Biol. Chem. 281 (39): 28712–20. doi:10.1074/jbc.M604628200. PMID16885164.
Teodoro JG, Parker AE, Zhu X, Green MR (2006). "p53-mediated inhibition of angiogenesis through up-regulation of a collagen prolyl hydroxylase". Science. 313 (5789): 968–71. doi:10.1126/science.1126391. PMID16917063.