3um2

Crystal structure of the Brox Bro1 domain in complex with the C-terminal tail of CHMP5

spinqualitylabelsall models 3um2, resolution 2.59Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3um2 is a 4 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.589Å Ligands: GOL Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function BROX_HUMAN Publication Abstract from PubMed Interactions of the CHMP protein carboxyl terminal tails with effector proteins play important roles in retroviral budding, cytokinesis, and multivesicular body biogenesis. Here we demonstrate that hydrophobic residues at the CHMP4B C-terminal amphipathic alpha helix bind a concave surface of Brox, a mammalian paralog of Alix. Unexpectedly, CHMP5 was also found to bind Brox and specifically recruit endogenous Brox to detergent-resistant membrane fractions through its C-terminal 20 residues. Instead of an alpha helix, the CHMP5 C-terminal tail adopts a tandem beta-hairpin structure that binds Brox at the same site as CHMP4B. Additional Brox:CHMP5 interface is furnished by a unique CHMP5 hydrophobic pocket engaging the Brox residue Y348 that is not conserved among the Bro1 domains. Our studies thus unveil a beta-hairpin conformation of the CHMP5 protein C-terminal tail, and provide insights into the overlapping but distinct binding profiles of ESCRT-III and the Bro1 domain proteins. Two Distinct Binding Modes Define the Interaction of Brox with the C-Terminal Tails of CHMP5 and CHMP4B.,Mu R, Dussupt V, Jiang J, Sette P, Rudd V, Chuenchor W, Bello NF, Bouamr F, Xiao TS Structure. 2012 May 9;20(5):887-98. Epub 2012 Apr 5. PMID:22484091 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Charged multivesicular body protein 3D structures Vacuolar protein sorting-associated protein 3D structures

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