Phosphomannomutase 1 is an enzyme that in humans is encoded by the PMM1gene.[5][6][7]
Phosphomannomutase catalyzes the conversion between D-mannose 6-phosphate and D-mannose 1-phosphate which is a substrate for GDP-mannose synthesis. GDP-mannose is used for synthesis of dolichol-phosphate-mannose, which is essential for N-linked glycosylation and thus the secretion of several glycoproteins as well as for the synthesis of Glycosylphosphatidylinositol (GPI) anchored proteins.[7]
^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^Matthijs G, Schollen E, Pirard M, Budarf ML, Van Schaftingen E, Cassiman JJ (Jun 1997). "PMM (PMM1), the human homologue of SEC53 or yeast phosphomannomutase, is localized on chromosome 22q13". Genomics. 40 (1): 41–7. doi:10.1006/geno.1996.4536. PMID9070917.
^ČeŘovský V (2007). "Identification of three novel peptides isolated from the venom of the neotropical social wasp Polistes major major". Journal of Peptide Science. 13 (7): 445–450. doi:10.1002/psc.860. PMID17559065. S2CID41958134.
Further reading[]
Wada Y, Sakamoto M (1997). "Isolation of the human phosphomannomutase gene (PMM1) and assignment to chromosome 22q13". Genomics. 39 (3): 416–7. doi:10.1006/geno.1996.4487. PMID9119384.
Barone R, Sturiale L, Fiumara A, et al. (2007). "Borderline mental development in a congenital disorder of glycosylation (CDG) type Ia patient with multisystemic involvement (intermediate phenotype)". J. Inherit. Metab. Dis. 30 (1): 107. doi:10.1007/s10545-006-0486-6. PMID17186415. S2CID12016939.
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PDB gallery
2fuc: Human alpha-Phosphomannomutase 1 with Mg2+ cofactor bound
2fue: Human alpha-Phosphomannomutase 1 with D-mannose 1-phosphate and Mg2+ cofactor bound