1gcy
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(New page: 200px<br /><applet load="1gcy" size="450" color="white" frame="true" align="right" spinBox="true" caption="1gcy, resolution 1.60Å" /> '''HIGH RESOLUTION CRYS...)
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Revision as of 13:50, 20 November 2007
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HIGH RESOLUTION CRYSTAL STRUCTURE OF MALTOTETRAOSE-FORMING EXO-AMYLASE
Overview
The intact maltotetraose-forming exo-amylase from Pseudomonas stutzeri, (G4-1), which has a raw starch binding domain, has been crystallized. The, structure was identified (PDB entry 1GCY) by the molecular replacement, method using the structure of its catalytic domain (G4-2). The result, showed that the raw starch binding domain is in a disordered state, the, corresponding electron densities being almost invisible. Superposition of, these two enzyme forms showed evidence for the possible location of the, raw starch binding domain (SBD). This crystal is a novel case, in that it, forms a regular lattice incorporating flexibly bound SBD in the channel of, crystal packing of the catalytic domains.
About this Structure
1GCY is a Single protein structure of sequence from Pseudomonas stutzeri with CA as ligand. Active as Glucan 1,4-alpha-maltotetraohydrolase, with EC number 3.2.1.60 Full crystallographic information is available from OCA.
Reference
Crystallization and structural analysis of intact maltotetraose-forming exo-amylase from Pseudomonas stutzeri., Mezaki Y, Katsuya Y, Kubota M, Matsuura Y, Biosci Biotechnol Biochem. 2001 Jan;65(1):222-5. PMID:11272837
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