2yn2 | pdb_00002yn2

Huf protein - paralogue of the tau55 histidine phosphatase domain

spinqualitylabelsall models 2yn2, resolution 2.05Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2yn2 is a 1 chain structure with sequence from Baker's yeast. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: FMT Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Saccharomyces cerevisiae tau55, a subunit of the RNA polymerase III-specific general transcription factor TFIIIC, comprises an N-terminal histidine phosphatase domain (tau55-HPD) whose catalytic activity and cellular function is poorly understood. We solved the crystal structures of tau55-HPD and its closely related paralogue Huf and used in silico docking methods to identify phospho-serine and phospho-tyrosine containing peptides as possible substrates that were subsequently validated using in vitro phosphatase assays. A comparative phospho-proteomic study identified additional phosphopeptides as possible targets, which show the involvement of these two phosphatases in the regulation of a variety of cellular functions. Our results identify tau55-HPD and Huf as bona fide protein phosphatases, characterize their substrate specificities and provide a small set of regulated phosphosite targets in vivo. Structural and functional characterization of a phosphatase domain within yeast general transcription factor TFIIIC.,Taylor NM, Glatt S, Hennrich ML, von Scheven G, Grotsch H, Fernandez-Tornero C, Rybin V, Gavin AC, Kolb P, Muller CW J Biol Chem. 2013 Apr 8. PMID:23569204 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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