4uzy

Crystal structure of the Chlamydomonas IFT70 and IFT52 complex

spinqualitylabelsall models 4uzy, resolution 2.48Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4uzy is a 2 chain structure with sequence from Chlamydomonas reinhardtii. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.477Å Ligands: FLC, MLI Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function A8ITN7_CHLRE Publication Abstract from PubMed Cilia are microtubule-based organelles that assemble via intraflagellar transport (IFT) and function as signaling hubs on eukaryotic cells. IFT relies on molecular motors and IFT complexes that mediate the contacts with ciliary cargo. To elucidate the architecture of the IFT-B complex, we reconstituted and purified the nonameric IFT-B core from Chlamydomonas reinhardtii and determined the crystal structures of C. reinhardtii IFT70/52 and Tetrahymena IFT52/46 subcomplexes. The 2.5-A resolution IFT70/52 structure shows that IFT52330-370 is buried deeply within the IFT70 tetratricopeptide repeat superhelix. Furthermore, the polycystic kidney disease protein IFT88 binds IFT52281-329 in a complex that interacts directly with IFT70/IFT52330-381 in trans. The structure of IFT52C/IFT46C was solved at 2.3 A resolution, and we show that it is essential for IFT-B core integrity by mediating interaction between IFT88/70/52/46 and IFT81/74/27/25/22 subcomplexes. Consistent with this, overexpression of mammalian IFT52C in MDCK cells is dominant-negative and causes IFT protein mislocalization and disrupted ciliogenesis. These data further rationalize several ciliogenesis phenotypes of IFT mutant strains. Crystal structures of IFT70/52 and IFT52/46 provide insight into intraflagellar transport B core complex assembly.,Taschner M, Kotsis F, Braeuer P, Kuehn EW, Lorentzen E J Cell Biol. 2014 Oct 27;207(2):269-82. doi: 10.1083/jcb.201408002. PMID:25349261 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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