Saccharomyces cerevisiae Hsp33/YOR391Cp is a member of the ThiI/DJ-1/PfpI superfamily. Hsp33 was overexpressed in Escherichia coli and its crystal structure was determined at 2.40 Å resolution. Structural comparison revealed that Hsp33 adopts an α/β-hydrolase fold and possesses the putative Cys-His-Glu catalytic triad common to the Hsp31 family, suggesting that Hsp33 and Hsp31 share similar aminopeptidase activity, while structural deviations in helices α2-α3 of the core domain might be responsible for the access of different peptide substrates.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2998354 | PMC |
| http://dx.doi.org/10.1107/S1744309110039965 | DOI Listing |
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