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Annotation rule MF_00685
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General rule information [?]

Accession MF_00685
Dates 18-AUG-2003 (Created)
18-NOV-2019 (Last updated, Version 28)
Name GlgB
Scope
Bacteria
Archaea; Thermoplasmata
Templates P07762 (GLGB_ECOLI); P9WN45 (GLGB_MYCTU); Q8GQC5 (GLGB_DICCH): [Recover all]

Propagated annotation [?]


Identifier, protein and gene names [?]

Identifier
GLGB
Protein name
RecName: Full=1,4-alpha-glucan branching enzyme GlgB;
EC 2.4.1.18;
AltName: Full=1,4-alpha-D-glucan:1,4-alpha-D-glucan 6-glucosyl-transferase;
AltName: Full=Alpha-(1->4)-glucan branching enzyme;
AltName: Full=Glycogen branching enzyme;
Short=BE;
Gene name
glgB

Comments [?]

Function Catalyzes the formation of the alpha-1,6-glucosidic linkages in glycogen by scission of a 1,4-alpha-linked oligosaccharide from growing alpha-1,4-glucan chains and the subsequent attachment of the oligosaccharide to the alpha-1,6 position.
Catalytic activity Reaction=Transfers a segment of a (1->4)-alpha-D-glucan chain to a primary hydroxy group in a similar glucan chain.; EC=2.4.1.18;
Pathway Glycan biosynthesis; glycogen biosynthesis.
Subunit Monomer.
Similarity Belongs to the glycosyl hydrolase 13 family. GlgB subfamily.

Keywords [?]


Gene Ontology [?]

GO:0003844; Molecular function: 1,4-alpha-glucan branching enzyme activity.
GO:0005978; Biological process: glycogen biosynthetic process.

Cross-references [?]

Pfam PF00128; Alpha-amylase; 1;
PF02806; Alpha-amylase_C; 1;
PF02922; CBM_48; 1;
TIGRFAMs TIGR01515; branching_enzym; 1;

Features [?]

From: GLGB_MYCTU (P9WN45)
Key     From     To       Description   Tag   Condition   FTGroup
ACT_SITE     411     411       Nucleophile     D  
ACT_SITE     464     464       Proton donor     E  

Additional information [?]

Size range 611-838 amino acids
Related rules None
Fusion None
Comments GlgB from M.tuberculosis is involved in the biosynthesis of both glycogen and capsular alpha-D-glucan.