Glucomannan 4-beta-mannosyltransferase

In enzymology, a glucomannan 4-beta-mannosyltransferase (EC 2.4.1.32) is an enzyme that catalyzes the chemical reaction

glucomannan 4-beta-mannosyltransferase
Identifiers
EC no.2.4.1.32
CAS no.37257-30-0
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO
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PMCarticles
PubMedarticles
NCBIproteins
GDP-mannose + (glucomannan)n GDP + (glucomannan)n+1

Thus, the two substrates of this enzyme are GDP-mannose and (glucomannan)n, whereas its two products are GDP and (glucomannan)n+1, a noncellulosic polysaccharide which is used in the formation of cell walls.

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is GDPmannose:glucomannan 1,4-beta-D-mannosyltransferase. Other names in common use include GDP-man-beta-mannan manosyltransferase, and glucomannan-synthase.

References

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  • Elbein AD (March 1969). "Biosynthesis of a cell wall glucomannan in mung bean seedlings". The Journal of Biological Chemistry. 244 (6): 1608–16. PMID 4304230.
  • "UniProtKB - Q9LZR3 (CSLA9_ARATH)" UniProt database