Glycoside Hydrolase Family 17

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• Author: ^^^Geoff Fincher^^^
• Responsible Curator: ^^^Geoff Fincher^^^

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Glycoside Hydrolase Family GHnn
Clan	GH-x
Mechanism	retaining/inverting
Active site residues	known/not known
CAZy DB link
http://www.cazy.org/fam/GHnn.html

Substrate specificities

  Normal  0      21      false  false  false    FR  X-NONE  X-NONE                                       MicrosoftInternetExplorer4                                                                                                                                                                                                                                                                                                                             The family 17 glycoside hydrolases are clan GH-A enzymes from bacteria, fungi and plants, and include two major groups of enzymes with related but distinct substrate specificities, namely (1,3)-β-d-glucan endohydrolases (EC 3.1.2.39) and (1,3;1,4)-β-d-glucan endohydrolases (EC 3.1.2.73).  A (1,3)-β-d-glucan exohydrolase (EC 3.1.2.58) is also classified in this family.  The family 17 enzymes have quite distinct amino acid sequences and 3D structures compared with the (1,3)-β-d-glucan endohydrolases and (1,3;1,4)-β-d-glucan endohydrolases that have similar substrate specificities but are classified in families 16, 55, 64 and 81.

This is an example of how to make references to a journal article [1]. (See the References section below). Multiple references can go in the same place like this [1, 2]. You can even cite books using just the ISBN [3]. References that are not in PubMed can be typed in by hand [4].

Kinetics and Mechanism

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Catalytic Residues

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Three-dimensional structures

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Family Firsts

First sterochemistry determination

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First catalytic nucleophile identification

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First general acid/base residue identification

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First 3-D structure

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References

1. Comfort DA, Bobrov KS, Ivanen DR, Shabalin KA, Harris JM, Kulminskaya AA, Brumer H, and Kelly RM. (2007). Biochemical analysis of Thermotoga maritima GH36 alpha-galactosidase (TmGalA) confirms the mechanistic commonality of clan GH-D glycoside hydrolases. Biochemistry. 2007;46(11):3319-30. DOI:10.1021/bi061521n |
2. He S and Withers SG. (1997). Assignment of sweet almond beta-glucosidase as a family 1 glycosidase and identification of its active site nucleophile. J Biol Chem. 1997;272(40):24864-7. DOI:10.1074/jbc.272.40.24864 |

4. Sinnott, M.L. (1990) Catalytic mechanisms of enzymic glycosyl transfer. Chem. Rev. 90, 1171-1202. DOI: 10.1021/cr00105a006