Misplaced Pages

Family 4 glycosyl hydrolase
Structure of the 6-phospho-beta glucosidase from Thermotoga maritima at 2.55 angstrom resolution in the tetragonal form with manganese, NAD+ and glucose-6-phosphate
Identifiers
Symbol	Glyco_hydro_4
Pfam	PF02056
Pfam clan	CL0063
InterPro	IPR001088
PROSITE	PDOC01027
SCOP2	1obb / SCOPe / SUPFAM
CAZy	GH4
Available protein structures: Pfam   structures / ECOD   PDB RCSB PDB; PDBe; PDBj PDBsum structure summary

In molecular biology, glycoside hydrolase family 4 is a family of glycoside hydrolases EC 3.2.1., which 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. This classification is available on the CAZy web site, and also discussed at CAZypedia, an online encyclopedia of carbohydrate active enzymes.

Glycoside hydrolase family 4 CAZY GH_4 comprises enzymes with several known activities; 6-phospho-beta-glucosidase (EC 3.2.1.86); 6-phospho-alpha-glucosidase (EC 3.2.1.122); alpha-galactosidase (EC 3.2.1.22); alpha-D-glucuronidase (EC 3.2.1.139). 6-phospho-alpha-glucosidase requires both NAD(H) and divalent metal (Mn, Fe, Co, or Ni) for activity.

External references

GH4 in CAZypedia

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): 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 4". 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. PMID 29040563.
8. Mohapatra, Samar Ballabha; Manoj, Narayanan (2021-02-26). "Structural basis of catalysis and substrate recognition by the NAD(H)-dependent α-d-glucuronidase from the glycoside hydrolase family 4". Biochemical Journal. 478 (4): 943–959. doi:10.1042/BCJ20200824. ISSN 0264-6021. PMID 33565573.
9. Thompson J, Pikis A, Ruvinov SB, Henrissat B, Yamamoto H, Sekiguchi J (October 1998). "The gene glvA of Bacillus subtilis 168 encodes a metal-requiring, NAD(H)-dependent 6-phospho-alpha-glucosidase. Assignment to family 4 of the glycosylhydrolase superfamily". The Journal of Biological Chemistry. 273 (42): 27347–56. doi:10.1074/jbc.273.42.27347. PMID 9765262.

• Biology

• EC 3.2.1
• Glycoside hydrolase families
• Protein families