4ckp | pdb_00004ckp

Structure of an N-terminal fragment of Leishmania SAS-6 that contains part of its coiled coil domain

spinqualitylabelsall models 4ckp, resolution 3.45Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4ckp is a 6 chain structure with sequence from Leima. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Related: 4ckm, 4ckn Resources: FirstGlance, OCA, RCSB, PDBsum Publication Abstract from PubMed Centrioles are cylindrical cell organelles with a ninefold symmetric peripheral microtubule array that is essential to template cilia and flagella. They are built around a central cartwheel assembly that is organized through homo-oligomerization of the centriolar protein SAS-6, but whether SAS-6 self-assembly can dictate cartwheel and thereby centriole symmetry is unclear. Here we show that Leishmania major SAS-6 crystallizes as a 9-fold symmetric cartwheel and provide the X-ray structure of this assembly at a resolution of 3.5 A. We furthermore demonstrate that oligomerization of Leishmania SAS-6 can be inhibited by a small molecule in vitro and provide indications for its binding site. Our results firmly establish that SAS-6 can impose cartwheel symmetry on its own and indicate how this process might occur mechanistically in vivo. Importantly, our data also provide a proof-of-principle that inhibition of SAS-6 oligomerization by small molecules is feasible. DOI: https://dx.doi.org/10.7554/eLife.01812.001. Structure of the SAS-6 cartwheel hub from Leishmania major.,van Breugel M, Wilcken R, McLaughlin SH, Rutherford TJ, Johnson CM Elife. 2014 Jan 1;3:e01812. doi: 10.7554/eLife.01812. PMID:24596152 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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