KEGG   ENZYME: 3.2.1.77Help
Entry
EC 3.2.1.77                 Enzyme                                 

Name
mannan 1,2-(1,3)-alpha-mannosidase;
exo-1,2-1,3-alpha-mannosidase;
1,2-1,3-alpha-D-mannan mannohydrolase
Class
Hydrolases;
Glycosylases;
Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds
BRITE hierarchy
Sysname
(1->2)-(1->3)-alpha-D-mannan mannohydrolase
Reaction(IUBMB)
Hydrolysis of (1->2)- and (1->3)-linkages in yeast mannan, releasing mannose
Reaction(KEGG)
(other) R01331(G) R05816 R06150(G) R06151(G)
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Comment
A 1,6-alpha-D-mannan backbone remains after action on yeast mannan. This is further attacked, but slowly.
History
EC 3.2.1.77 created 1972
Pathway
ec00051  Fructose and mannose metabolism
Reference
1  [PMID:5769177]
  Authors
Jones GH, Ballou CE.
  Title
Studies on the structure of yeast mannan. I. Purification and some properties of an alpha-mannosidase from an arthrobacter species.
  Journal
J Biol Chem 244:1043-51 (1969)
Reference
2  [PMID:5814027]
  Authors
Jones GH, Ballou CE.
  Title
Studies on the structure of yeast mannan. II. Mode of action of the Arthrobacter alpha-mannosidase on yeast mannan.
  Journal
J Biol Chem 244:1052-9 (1969)
Other DBs
ExplorEnz - The Enzyme Database: 3.2.1.77
IUBMB Enzyme Nomenclature: 3.2.1.77
ExPASy - ENZYME nomenclature database: 3.2.1.77
BRENDA, the Enzyme Database: 3.2.1.77
CAS: 37288-53-2

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