Entry
Name
glycoprotein endo-alpha-1,2-mannosidase;
glucosylmannosidase;
endo-alpha-D-mannosidase;
endo-alpha-mannosidase;
endomannosidase;
glucosyl mannosidase;
MANEA (gene name);
glycoprotein glucosylmannohydrolase
Class
Hydrolases;
Glycosylases;
Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds
BRITE hierarchy
Sysname
glycoprotein glucosylmannohydrolase (configuration-retaining)
Reaction(IUBMB)
GlcMan9GlcNAc2-[protein] + H2O = Man8GlcNAc2-[protein] (isomer 8A1,2,3B1,2) + alpha-D-glucosyl-(1->3)-alpha-D-mannopyranose
Substrate
GlcMan9GlcNAc2-[protein];
H2O [CPD:
C00001 ]
Product
Man8GlcNAc2-[protein] (isomer 8A1,2,3B1,2);
alpha-D-glucosyl-(1->3)-alpha-D-mannopyranose
Comment
The enzyme catalyses the hydrolysis of the terminal alpha-D-glucosyl-(1->3)-D-mannosyl unit from the GlcMan9(GlcNAc)2 oligosaccharide component of N-glucosylated proteins during their processing in the Golgi apparatus. The name for the isomer is based on a nomenclature proposed by Prien et al [7].
History
EC 3.2.1.130 created 1990, modified 2017
Orthology
K15538 glycoprotein endo-alpha-1,2-mannosidase
K21132 alpha-mannan endo-1,2-alpha-mannanase / glycoprotein endo-alpha-1,2-mannosidase
Genes
SANH : 107680802 107693121
CCAR : 109069166 109069171
CAUA : 113060719 113071723 113078772
CGIB : 127933585 127975775
PDAB : 135727095 135733705
TFS : 130520570 130540073(manea)
ALIM : 106518445 106537193
ARUT : 117403064 117410572
LPIC : 129258362 129258905
AALB : 109410578 109421149
CFEL : 113384314 113384363
MAEA : 128238147 128238660
FCY : FRACYDRAFT_139403 FRACYDRAFT_149315 FRACYDRAFT_178285
AAF : AURANDRAFT_2470 AURANDRAFT_2525 AURANDRAFT_29570
NGR : NAEGRDRAFT_62591(FM155)
TVA : TVAG_2v0507790 TVAG_2v0513200 TVAG_2v0558660 TVAG_2v0569140 TVAG_2v0978870 TVAG_2v1009280
EHX : EMIHUDRAFT_210275 EMIHUDRAFT_241315
GTT : GUITHDRAFT_110280 GUITHDRAFT_117863
» show all
Taxonomy
Reference
Authors
Lubas WA, Spiro RG.
Title
Golgi endo-alpha-D-mannosidase from rat liver, a novel N-linked carbohydrate unit processing enzyme.
Journal
J Biol Chem 262:3775-81 (1987)
Reference
Authors
Tulsiani DR, Coleman VD, Touster O.
Title
Asparagine-linked glycoprotein biosynthesis in rat brain: identification of glucosidase I, glucosidase II, and and endomannosidase (glucosyl mannosidase).
Journal
Reference
Authors
Hiraizumi S, Spohr U, Spiro RG
Title
Ligand affinity chromatographic purification of rat liver Golgi endomannosidase.
Journal
J Biol Chem 269:4697-700 (1994)
Reference
Authors
Spiro MJ, Bhoyroo VD, Spiro RG
Title
Molecular cloning and expression of rat liver endo-alpha-mannosidase, an N-linked oligosaccharide processing enzyme.
Journal
Sequence
Reference
Authors
Hamilton SR, Li H, Wischnewski H, Prasad A, Kerley-Hamilton JS, Mitchell T, Walling AJ, Davidson RC, Wildt S, Gerngross TU
Title
Intact {alpha}-1,2-endomannosidase is a typical type II membrane protein.
Journal
Sequence
Reference
Authors
Hardt B, Volker C, Mundt S, Salska-Navarro M, Hauptmann M, Bause E
Title
Human endo-alpha1,2-mannosidase is a Golgi-resident type II membrane protein.
Journal
Sequence
Reference
Authors
Prien JM, Ashline DJ, Lapadula AJ, Zhang H, Reinhold VN
Title
The high mannose glycans from bovine ribonuclease B isomer characterization by ion trap MS.
Journal
Other DBs
ExPASy - ENZYME nomenclature database: 3.2.1.130
LinkDB
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