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EC 3.2.1.114 Details
EC number
3.2.1.114
Accepted name
mannosyl-oligosaccharide 1,3-1,6-α-mannosidase
Reaction
Man5GlcNAc3-[protein] + 2 H2O = Man3GlcNAc3-[protein] + 2 α-D-mannopyranose
Other name(s)
MAN2A1 (gene name), MAN2A2 (gene name), mannosidase II, exo-1,3-1,6-α-mannosidase, α-D-mannosidase II, α-mannosidase II, α1-3,6-mannosidase, GlcNAc transferase I-dependent α1,3[α1,6]mannosidase, Golgi α-mannosidase II, ManII, 1,3(1,6)-α-D-mannosidase, 1,3-(1,6-)mannosyl-oligosaccharide α-D-mannohydrolase, (1→3)-(1→6)-mannosyl-oligosaccharide α-D-mannohydrolase
Systematic name
(1→3)-(1→6)-mannosyl-oligosaccharide α-D-mannohydrolase (configuration-retaining)
CAS registry number
82047-77-6
Comment
The enzyme, found in plants and animals, participates in the processing of N-glycans in the Golgi apparatus. It removes two mannosyl residues, one linked by α1,3 linkage, and the other linked by α1,6 linkage, both of which are removed by the same catalytic site. The enzyme is sensitive to swainsonine.
History
created 1986, modified 2018
EC Tree
3.2.1.5 created 1961, deleted 1964
3.2.1.9 created 1961, deleted 1972
3.2.1.12 created 1961, deleted 1976
3.2.1.13 created 1961, deleted 1976
3.2.1.16 created 1961, deleted 1972
3.2.1.19 created 1961, deleted 1978
3.2.1.27 created 1961, deleted 1972
3.2.1.29 created 1961, deleted 1972
3.2.1.30 created 1961, deleted 1992
3.2.1.34 created 1965, deleted 1972
3.2.1.69 created 1972, deleted 1976
3.2.1.79 created 1972, deleted 1976
3.2.1.90 created 1976, deleted 2001
3.2.1.138 created 1992, deleted 2003
3.2.1.148 created 1972 as EC 3.3.1.3, transferred 2001 to EC 3.2.1.148, deleted 2004