HMM Summary Page: TIGR02093

Functionglycogen/starch/alpha-glucan phosphorylases
Gene SymbolglgP
Trusted Cutoff552.90
Domain Trusted Cutoff552.90
Noise Cutoff250.40
Domain Noise Cutoff250.40
Isology Typesubfamily
EC Number2.4.1.1
HMM Length804
Mainrole CategoryEnergy metabolism
Subrole CategoryBiosynthesis and degradation of polysaccharides
Gene Ontology TermGO:0004645: phosphorylase activity molecular_function
GO:0005977: glycogen metabolic process biological_process
AuthorHaft DH
Entry DateJan 8 2004 10:45AM
Last ModifiedFeb 14 2011 3:27PM
CommentThis family consists of phosphorylases. Members use phosphate to break alpha 1,4 linkages between pairs of glucose residues at the end of long glucose polymers, releasing alpha-D-glucose 1-phosphate. The nomenclature convention is to preface the name according to the natural substrate, as in glycogen phosphorylase, starch phosphorylase, maltodextrin phosphorylase, etc. Name differences among these substrates reflect differences in patterns of branching with alpha 1,6 linkages. Members include allosterically regulated and unregulated forms. A related family, TIGR02094, contains examples known to act well on particularly small alpha 1,4 glucans, as may be found after import from exogenous sources.
Genome PropertyGenProp0168: glycogen system (HMM)