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Difference between revisions of "Glycoside Hydrolase Family 107"

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== Three-dimensional structures ==
 
== Three-dimensional structures ==
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The crystal structures of ''Mariniflexile fucanivorans'' (PDB: [{{PDBlink}}6dns 6dns],[{{PDBlink}}6dms 6dms],[{{PDBlink}}6dlh 6dlh]) and ''Psychromonas sp.'' (PDB: [{{PDBlink}}6m8n 6m8n]). have been determined in 2018.
  
 
== Family Firsts ==
 
== Family Firsts ==

Revision as of 08:56, 12 December 2019

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Glycoside Hydrolase Family GH107
Clan GH-R
Mechanism retaining
Active site residues known
CAZy DB link
https://www.cazy.org/GH107.html


Substrate specificities

The glycoside hydrolases of this family are endo-acting α-fucosidases active on sulfated fucans (or fucoidans) from brown algae.

All described GH107 family members are endo-1,4-fucanase of bacterial origin.

With enzymes from the CAZY family GH29 they form the clan GH-R.

Kinetics and Mechanism

Content is to be added here.

Catalytic Residues

The catalytic nucleophile is an aspartate, while the catalytic acid-base is a histidine. The later is unusual in GHs, and a divergence from GH29, but is likely necessary to avoid electronic repulsion with the substrate sulfate groups.

Three-dimensional structures

The crystal structures of Mariniflexile fucanivorans (PDB: 6dns,6dms,6dlh) and Psychromonas sp. (PDB: 6m8n). have been determined in 2018.

Family Firsts

First stereochemistry determination
Content is to be added here.
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. Cantarel BL, Coutinho PM, Rancurel C, Bernard T, Lombard V, and Henrissat B. (2009). The Carbohydrate-Active EnZymes database (CAZy): an expert resource for Glycogenomics. Nucleic Acids Res. 2009;37(Database issue):D233-8. DOI:10.1093/nar/gkn663 | PubMed ID:18838391 [Cantarel2009]
  2. Davies, G.J. and Sinnott, M.L. (2008) Sorting the diverse: the sequence-based classifications of carbohydrate-active enzymes. The Biochemist, vol. 30, no. 4., pp. 26-32. Download PDF version.

    [DaviesSinnott2008]