1iex Summary

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Crystal structure of barley beta-D-glucan glucohydrolase isoenzyme Exo1 in complex with 4I,4III,4V-S-trithiocellohexaose

The structure was published by Hrmova, M., Varghese, J.N., De Gori, R., Smith, B.J., Driguez, H., and Fincher, G.B., in 2001 in a paper entitled "Catalytic mechanisms and reaction intermediates along the hydrolytic pathway of a plant beta-D-glucan glucohydrolase." (abstract).

This crystal structure was determined using X-ray diffraction at a resolution of 2.2 Å and deposited in 2001.

The experimental data on which the structure is based was not deposited.

The PDB entry contains the structure of BETA-D-GLUCAN GLUCOHYDROLASE ISOENZYME EXO1.

It also contains one or more heterogenic compounds (e.g., ligands, co-factors, ions, modified amino acids, etc.); see here for a complete list.

The molecule is most likely monomeric.

The following tables show cross-reference information to other databases (to obtain a list of all PDB entries sharing the same property or classification, click on the magnifying glass icon):


Chain Name UniProt Name of source organism % of UniProt sequence present in the sample Residues in the sample molecules % of residues observed
A BETA-D-GLUCAN GLUCOHYDROLASE ISOENZYME EXO1 Q9XEI3 (26-630) (Q9XEI3_HORVD)search Hordeum vulgare subsp. vulgaresearch 96% 605 99%


This entry contains 1 unique UniProt protein:

UniProt accession Name Organism PDB
Q9XEI3 (26 - 630) BETA-D-GLUCAN GLUCOHYDROLASE ISOENZYME EXO1 Hordeum vulgare

Chain Structural classification (SCOP) Structural classification (CATH) Sequence family (Pfam)
A (Q9XEI3) NagZ-likesearch, Beta-D-glucan exohydrolase, C-terminal domainsearch TIM Barrelsearch, Rossmann foldsearch PF00933: Glycosyl hydrolase family 3 N terminal domainsearch, PF01915: Glycosyl hydrolase family 3 C-terminal domainsearch

Chain ID Molecular function (GO) Biological process (GO)
A (Q9XEI3) hydrolase activity, hydrolyzing O-glycosyl compoundssearch hydrolase activitysearch carbohydrate metabolic processsearch

Chain InterPro annotation
A Glycoside hydrolase, family 3, N-terminalsearch Glycoside hydrolase family 3 C-terminal domainsearch Glycoside hydrolase superfamilysearch Glycoside hydrolase family 3search