Glycogenin
Glycogenin is an enzyme involved in converting glucose to glycogen. It acts as a primer, by polymerizing the first few glucose molecules, after which other enzymes take over. It is a homodimer of 37-kDa subunits and is classified as a glycosyltransferase.
Key facts
- Enzyme.Name
- Glycogenin glucosyltransferase
- Enzyme.EC_number
- 2.4.1.186
- Enzyme.CAS_number
- 117590-73-5
- Enzyme.image
- Rabbit muscle glycogenin structure.jpg
- Enzyme.caption
- Glycogenin structure (from rabbit).
- Protein.Name
- glycogenin 2
- Protein.HGNCid
- 4700
- Protein.Symbol
- GYG2
- Protein.AltSymbols
- GYG
- Protein.EntrezGene
- 8908
- Protein.OMIM
- 603942
- Protein.RefSeq
- NM_004130
- Protein.UniProt
~3 min read
Article
8 sectionsContents
- Nomenclature
- Discovery
- Function
- Structure
- Isozymes
- References
- Further reading
- External links
Glycogenin is an enzyme involved in converting glucose to glycogen. It acts as a primer, by polymerizing the first few glucose molecules, after which other enzymes take over. It is a homodimer of 37-kDa subunits and is classified as a glycosyltransferase.
It catalyzes the chemical reactions: UDP-α--glucose + glycogenin UDP + α--glucosylglycogenin UDP-α--glucose + (1,4-α--glucosyl)-glycogenin (1,4-α--glucosyl)-glucosylglycogenin + UDP