Glycoside hydrolase family 18

Last updated
Glycosyl hydrolases family 18
PDB 1wno EBI.jpg
crystal structure of a native chitinase from aspergillus fumigatus yj-407
Identifiers
SymbolGlyco_hydro_18
Pfam PF00704
Pfam clan CL0058
InterPro IPR001223
SCOP2 1ctn / SCOPe / SUPFAM
OPM superfamily 117
OPM protein 1nh6
CDD cd00598
Membranome 1385
Available protein structures:
Pfam   structures / ECOD  
PDB RCSB PDB; PDBe; PDBj
PDBsum structure summary

In molecular biology, Glycoside hydrolase family 18 is a family of glycoside hydrolases.

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.

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References

  1. 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.
  2. 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.
  3. 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.
  4. "Home". CAZy.org. Retrieved 2018-03-06.
  5. 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.
  6. "Glycoside Hydrolase Family 18". CAZypedia.org. Retrieved 2018-03-06.
  7. 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.
This article incorporates text from the public domain Pfam and InterPro: IPR001223