In molecular biology, Glycoside hydrolase family 18 is a family of glycoside hydrolases.
| Glycosyl hydrolases family 18 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
 crystal structure of a native chitinase from aspergillus fumigatus yj-407 | |||||||||
| Identifiers | |||||||||
| Symbol | Glyco_hydro_18 | ||||||||
| Pfam | PF00704 | ||||||||
| Pfam clan | CL0058 | ||||||||
| InterPro | IPR001223 | ||||||||
| SCOP2 | 1ctn / SCOPe / SUPFAM | ||||||||
| OPM superfamily | 117 | ||||||||
| OPM protein | 1nh6 | ||||||||
| CDD | cd00598 | ||||||||
| Membranome | 1385 | ||||||||
| |||||||||
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]
Some members of this family, CAZY GH_18, belong to the chitinase class II group which includes chitinase, chitodextrinase and the killer toxin of Kluyveromyces lactis. The chitinases hydrolyse chitin oligosaccharides. Another chitinase II member is the novel gene Chitinase domain-containing protein 1. The family also includes various glycoproteins from mammals; cartilage glycoprotein and the oviduct-specific glycoproteins are two examples.
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) (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 18". 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. hdl:21.11116/0000-0003-B7EB-6. PMID 29040563.
