5g0i

Crystal structure of Danio rerio HDAC6 CD1 and CD2 (linker cleaved) in complex with Nexturastat A

spinqualitylabelsall models 5g0i, resolution 1.99Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5g0i is a 2 chain structure with sequence from Danio rerio. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.99Å Ligands: CL, EDO, K, N4R, ZN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function F8W4B7_DANRE Publication Abstract from PubMed We report crystal structures of zebrafish histone deacetylase 6 (HDAC6) catalytic domains in tandem or as single domains in complex with the (R) and (S) enantiomers of trichostatin A (TSA) or with the HDAC6-specific inhibitor nexturastat A. The tandem domains formed, together with the inter-domain linker, an ellipsoid-shaped complex with pseudo-twofold symmetry. We identified important active site differences between both catalytic domains and revealed the binding mode of HDAC6 selective inhibitors. HDAC inhibition assays with (R)- and (S)-TSA showed that (R)-TSA was a broad-range inhibitor, whereas (S)-TSA had moderate selectivity for HDAC6. We identified a uniquely positioned alpha-helix and a flexible tryptophan residue in the loop joining alpha-helices H20 to H21 as critical for deacetylation of the physiologic substrate tubulin. Using single-molecule measurements and biochemical assays we demonstrated that HDAC6 catalytic domain 2 deacetylated alpha-tubulin lysine 40 in the lumen of microtubules, but that its preferred substrate was unpolymerized tubulin. Structural insights into HDAC6 tubulin deacetylation and its selective inhibition.,Miyake Y, Keusch JJ, Wang L, Saito M, Hess D, Wang X, Melancon BJ, Helquist P, Gut H, Matthias P Nat Chem Biol. 2016 Jul 25. doi: 10.1038/nchembio.2140. PMID:27454931 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Histone deacetylase 3D structures

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