1gd7

CRYSTAL STRUCTURE OF A BIFUNCTIONAL PROTEIN (CSAA) WITH EXPORT-RELATED CHAPERONE AND TRNA-BINDING ACTIVITIES.

spinqualitylabelsall models 1gd7, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1gd7 is a 4 chain structure with sequence from Thermus thermophilus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Resources: FirstGlance, OCA, RCSB, PDBsum, TOPSAN 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 The CsaA protein was first characterized in Bacillus subtilis as a molecular chaperone with export-related activities. Here we report the 2.0 Angstrom-resolution crystal structure of the Thermus thermophilus CsaA protein, designated ttCsaA. Atomic structure and experiments in solution revealed a homodimer as the functional unit. The structure of the ttCsaA monomer is reminiscent of the well known oligonucleotide-binding fold, with the addition of extensions at the N- and C-termini that form an extensive dimer interface. The two identical, large, hydrophobic cavities on the protein surface are likely to constitute the substrate binding sites. The CsaA proteins share essential sequence similarity with the tRNA-binding protein Trbp111. Structure-based sequence analysis suggests a close structural resemblance between these proteins, which may extend to the architecture of the binding sites at the atomic level. These results raise the intriguing possibility that CsaA proteins possess a second, tRNA-binding activity in addition to their export-related function. The crystal structure of the ttCsaA protein: an export-related chaperone from Thermus thermophilus.,Kawaguchi S, Muller J, Linde D, Kuramitsu S, Shibata T, Inoue Y, Vassylyev DG, Yokoyama S EMBO J. 2001 Feb 1;20(3):562-9. PMID:11157762 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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