1j2v

Crystal Structure of CutA1 from Pyrococcus Horikoshii

spinqualitylabelsall models 1j2v, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1j2v is a 1 chain structure with sequence from Pyrococcus horikoshii OT3. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2Å Ligands: MSE Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function CUTA_PYRHO Involved in resistance toward heavy metals. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed CutA is a small protein that appears to be involved in the mechanism of divalent metal cation tolerance in microorganisms. Here we report the crystal structure of Pyrococcus horikoshii CutA (PhoCutA), with and without Cu(2+), and its metal-binding properties. Crystallographic analyses revealed that PhoCutA forms a stable trimeric structure with intertwined antiparallel beta-strands. The crystal structure of the Cu(2+)-PhoCutA complex shows that the Cu(2+) is located at a trimer-trimer interface and is recognized by the side chains of one Asp(48) from each trimer. In an in vitro experiment, PhoCutA bound to several heavy metals, most of which led to reversible aggregation of the protein; i.e. the aggregates could be completely solubilized by addition of ethylenediamine tetraacetic acid (EDTA) or dialysis against metal free buffer. Substitution of Asp(48) with Ala led to a decrease in the amount of aggregates, suggesting the significant contribution of Asp(48) to the reversible aggregation. To the best of our knowledge, this is the first report which provides the structural evidence for heavy metal-induced multimerization of a protein. Structural implications for heavy metal-induced reversible assembly and aggregation of a protein: the case of Pyrococcus horikoshii CutA.,Tanaka Y, Tsumoto K, Nakanishi T, Yasutake Y, Sakai N, Yao M, Tanaka I, Kumagai I FEBS Lett. 2004 Jan 2;556(1-3):167-74. PMID:14706845 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also CutA1 3D structures

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