1g87

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THE CRYSTAL STRUCTURE OF ENDOGLUCANASE 9G FROM CLOSTRIDIUM CELLULOLYTICUM

Structural highlights

1g87 is a 2 chain structure with sequence from Ruminiclostridium cellulolyticum. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.6Å
Ligands:CA, EDO, GOL, MG
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

GUNG_RUMCH The biological conversion of cellulose to glucose generally requires three types of hydrolytic enzymes: (1) Endoglucanases which cut internal beta-1,4-glucosidic bonds; (2) Exocellobiohydrolases that cut the disaccharide cellobiose from the non-reducing end of the cellulose polymer chain; (3) Beta-1,4-glucosidases which hydrolyze the cellobiose and other short cello-oligosaccharides to glucose.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Complete cellulose degradation is the first step in the use of biomass as a source of renewable energy. To this end, the engineering of novel cellulase activity, the activity responsible for the hydrolysis of the beta-1,4-glycosidic bonds in cellulose, is a topic of great interest. The high-resolution X-ray crystal structure of a multidomain endoglucanase from Clostridium cellulolyticum has been determined at a 1.6-A resolution. The endoglucanase, Cel9G, is comprised of a family 9 catalytic domain attached to a family III(c) cellulose-binding domain. The two domains together form a flat platform onto which crystalline cellulose is suggested to bind and be fed into the active-site cleft for endolytic hydrolysis. To further dissect the structural basis of cellulose binding and hydrolysis, the structures of Cel9G in the presence of cellobiose, cellotriose, and a DP-10 thio-oligosaccharide inhibitor were resolved at resolutions of 1.7, 1.8, and 1.9 A, respectively.

X-Ray crystal structure of the multidomain endoglucanase Cel9G from Clostridium cellulolyticum complexed with natural and synthetic cello-oligosaccharides.,Mandelman D, Belaich A, Belaich JP, Aghajari N, Driguez H, Haser R J Bacteriol. 2003 Jul;185(14):4127-35. PMID:12837787[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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Citations
4 reviews cite this structure
Clostridium cellulolyticum: model organism of mesophilic cellulolytic clostridia.
Desvaux et al. (2005)
3 more
28 other articles
No citations found

See Also

References

  1. ↑ Mandelman D, Belaich A, Belaich JP, Aghajari N, Driguez H, Haser R. X-Ray crystal structure of the multidomain endoglucanase Cel9G from Clostridium cellulolyticum complexed with natural and synthetic cello-oligosaccharides. J Bacteriol. 2003 Jul;185(14):4127-35. PMID:12837787

Contents


PDB ID 1g87

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