HMM Summary Page: TIGR02100

Functionglycogen debranching enzyme GlgX
Gene SymbolglgX
Trusted Cutoff640.90
Domain Trusted Cutoff640.90
Noise Cutoff275.35
Domain Noise Cutoff275.35
Isology Typeequivalog
EC Number3.2.1.-
HMM Length688
Mainrole CategoryEnergy metabolism
Subrole CategoryBiosynthesis and degradation of polysaccharides
Gene Ontology TermGO:0004133: glycogen debranching enzyme activity molecular_function
GO:0005980: glycogen catabolic process biological_process
AuthorHaft DH
Entry DateJan 16 2004 10:25AM
Last ModifiedFeb 14 2011 3:27PM
CommentThis family consists of the GlgX protein from the E. coli glycogen operon and probable equivalogs from other prokaryotic species. GlgX is not required for glycogen biosynthesis, but instead acts as a debranching enzyme for glycogen catabolism. This HMM distinguishes GlgX from pullanases and other related proteins that also operate on alpha-1,6-glycosidic linkages. In the wide band between the trusted and noise cutoffs are functionally similar enzymes, mostly from plants, that act similarly but usually are termed isoamylase.
ReferencesRM 8576033 RT Coordinate genetic regulation of glycogen catabolism and biosynthesis in Escherichia coli via the CsrA gene product. RA Yang H, Liu MY, Romeo T. RL J Bacteriol. 1996 Feb; 178(4): 1012-7. DR EXPERIMENTAL; SP|P15067; Escherichia coli DR HAMAP; MF_01248; 27 of 28
Genome PropertyGenProp0168: glycogen system (HMM)