2x44 | pdb_00002x44

Structure of a strand-swapped dimeric form of CTLA-4

spinqualitylabelsall models 2x44, resolution 2.60Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2x44 is a 1 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Related: 1ah1, 1h6e, 1i8l, 1i85 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT 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 We present the crystal structure of an immunoglobulin light-chain-like domain, CTLA-4, as a strand-swapped dimer displaying cis-trans proline isomerisation and native-like hydrogen bonding. We also show that CTLA-4 can form amyloid-like fibres and amorphous deposits explainable by the same strand swapping. Our results suggest a molecular basis for the pathological aggregation of immunoglobulin domains and why amyloid-like fibres are more often composed of homologous rather than heterologous subunits. Domain metastability: a molecular basis for immunoglobulin deposition?,Sonnen AF, Yu C, Evans EJ, Stuart DI, Davis SJ, Gilbert RJ J Mol Biol. 2010 Jun 4;399(2):207-13. Epub 2010 Apr 13. PMID:20394753 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also CTLA-4

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