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Protein domain of unknown function DUF1023 is an alpha/beta hydrolase
Mingzhu Zheng1, Krzysztof Ginalski, Leszek Rychlewski
1Department of Biochemistry, University of Texas, Southwestern Medical Center, Dallas, Texas 75390-9038, USA.
Abstract:
Pfam family DUF1023 consists entirely of uncharacterized proteins generated by sequencing the genomes of Actinobacteria (Bateman A., et al., Nucleic Acids Res. 2004;32 Database issue:D138-141.) Utilizing sequence similarity detection methods, we infer homology between DUF1023 and alpha/beta hydrolases. DUF1023 proteins conserve the core secondary structures in alpha/beta hydrolase fold, and share similar catalytic machinery as that of alpha/beta hydrolases. We predict DUF1023 spatial structure and deduce that they function as hydrolases utilizing catalytic Ser-His-Asp triad with the serine as a nucleophile.
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