Phosphomannan mannosephosphotransferase
class of enzymes
In enzymology, a phosphomannan mannosephosphotransferase (EC 2.7.8.9) is an enzyme that catalyzes the chemical reaction
GDP-mannose + (phosphomannan)n
⇌
{\displaystyle \rightleftharpoons }
GMP + (phosphomannan)n+1
Thus, the two substrates of this enzyme are GDP-mannose and (phosphomannan)n, whereas its two products are GMP and (phosphomannan)n+1.
This enzyme belongs to the family of transferases, specifically those transferring non-standard substituted phosphate groups. The systematic name of this enzyme class is GDP-mannose:phosphomannan mannose phosphotransferase.
References
Bretthauer RK, Kozak LP, Irwin WE (1969). "Phosphate and mannose transfer from guanosine diphosphate mannose to yeast mannan acceptors". Biochem. Biophys. Res. Commun. 37 (5): 820–827.
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