In molecular biology, glycoside hydrolase family 77 is a family of glycoside hydrolases.
| Glyco_hydro_77 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
 structure determination and refinement at 1.8 a resolution of disproportionating enzyme from potato | |||||||||
| Identifiers | |||||||||
| Symbol | Glyco_hydro_77 | ||||||||
| Pfam | PF02446 | ||||||||
| Pfam clan | CL0058 | ||||||||
| InterPro | IPR003385 | ||||||||
| SCOP2 | 1cwy / SCOPe / SUPFAM | ||||||||
| CAZy | GH77 | ||||||||
| |||||||||
Glycoside hydrolases EC 3.2.1. are a widespread group of enzymes that hydrolyse the glycosidic bond between two or more carbohydrates, or between a carbohydrate and a non-carbohydrate moiety. A classification system for glycoside hydrolases, based on sequence similarity, has led to the definition of >100 different families.[1][2][3] This classification is available on the CAZy web site,[4][5] and also discussed at CAZypedia, an online encyclopedia of carbohydrate active enzymes.[6][7]
The enzymes in this family have amylomaltase or 4-α-glucanotransferase activity (EC 2.4.1.25) CAZY GH_77, they transfer a segment of a (1,4)-alpha-D-glucan to a new 4-position in an acceptor, which may be glucose or (1,4)-alpha-D-glucan.[8] They belong to the disproportionating family of enzymes.
References
edit- ^ Henrissat B, Callebaut I, Fabrega S, Lehn P, Mornon JP, Davies G (July 1995). "Conserved catalytic machinery and the prediction of a common fold for several families of glycosyl hydrolases". Proceedings of the National Academy of Sciences of the United States of America. 92 (15): 7090–4. Bibcode:1995PNAS...92.7090H. doi:10.1073/pnas.92.15.7090. PMC 41477. PMID 7624375.
- ^ Davies G, Henrissat B (September 1995). "Structures and mechanisms of glycosyl hydrolases". Structure. 3 (9): 853–9. doi:10.1016/S0969-2126(01)00220-9. PMID 8535779.
- ^ Henrissat B, Bairoch A (June 1996). "Updating the sequence-based classification of glycosyl hydrolases". The Biochemical Journal. 316 (Pt 2): 695–6. doi:10.1042/bj3160695. PMC 1217404. PMID 8687420.
- ^ "Home". CAZy.org. Retrieved 2018-03-06.
- ^ Lombard V, Golaconda Ramulu H, Drula E, Coutinho PM, Henrissat B (January 2014). "The carbohydrate-active enzymes database (CAZy) in 2013". Nucleic Acids Research. 42 (Database issue): D490–5. doi:10.1093/nar/gkt1178. PMC 3965031. PMID 24270786.
- ^ "Glycoside Hydrolase Family 77". CAZypedia.org. Retrieved 2018-03-06.
- ^ CAZypedia Consortium (December 2018). "Ten years of CAZypedia: a living encyclopedia of carbohydrate-active enzymes" (PDF). Glycobiology. 28 (1): 3–8. doi:10.1093/glycob/cwx089. PMID 29040563.
- ^ Okada S, Takaha T, Yanase M, Smith SM (1993). "Disproportionating enzyme (4-alpha-glucanotransferase; EC 2.4.1.25) of potato. Purification, molecular cloning, and potential role in starch metabolism". J. Biol. Chem. 268 (2): 1391–1396. doi:10.1016/S0021-9258(18)54088-6. PMID 7678257.
