Mannosyl-oligosaccharide 1,2-alpha-mannosidase (, ''mannosidase 1A'', ''mannosidase 1B'', ''1,2-alpha-mannosidase'', ''exo-alpha-1,2-mannanase'', ''mannose-9 processing alpha-mannosidase'', ''glycoprotein processing mannosidase I'', ''mannosidase I'', ''Man9-mannosidase'', ''ManI'', ''1,2-alpha-mannosyl-oligosaccharide alpha-D-mannohydrolase'') is an
enzyme with
systematic name ''2-alpha-mannosyl-oligosaccharide alpha-D-mannohydrolase''.
This enzyme
catalyses the following
chemical reaction
:
Hydrolysis of the terminal (1->2)-linked alpha-D-
mannose residues in the oligo-mannose
oligosaccharide Man9(GlcNAc)2
This enzyme is involved in the synthesis of
glycoproteins.
Kifunensine
Kifunensine is an alkaloid originally isolated from ''Kitasatosporia kifunense'', an actinobacterium (formerly called an actinomycete). It is a neutral, stable compound.
Kifunensine is a potent inhibitor of the mannosidase I enzyme and is primar ...
is a potent inhibitor of mannosidase I.
References
External links
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EC 3.2.1