6hb1

Structure of Hgh1, crystal form I

spinqualitylabelsall models 6hb1, resolution 2.33Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6hb1 is a 4 chain structure with sequence from Baker's yeast. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CL Gene: HGH1, YGR187C, G7538 (Baker's yeast) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Eukaryotic elongation factor 2 (eEF2) is an abundant and essential component of the translation machinery. The biogenesis of this 93 kDa multi-domain protein is assisted by the chaperonin TRiC/CCT. Here, we show in yeast cells that the highly conserved protein Hgh1 (FAM203 in humans) is a chaperone that cooperates with TRiC in eEF2 folding. In the absence of Hgh1, a substantial fraction of newly synthesized eEF2 is degraded or aggregates. We solved the crystal structure of Hgh1 and analyzed the interaction of wild-type and mutant Hgh1 with eEF2. These experiments revealed that Hgh1 is an armadillo repeat protein that binds to the dynamic central domain III of eEF2 via a bipartite interface. Hgh1 binding recruits TRiC to the C-terminal eEF2 module and prevents unproductive interactions of domain III, allowing efficient folding of the N-terminal GTPase module. eEF2 folding is completed upon dissociation of TRiC and Hgh1. Chaperone Function of Hgh1 in the Biogenesis of Eukaryotic Elongation Factor 2.,Monkemeyer L, Klaips CL, Balchin D, Korner R, Hartl FU, Bracher A Mol Cell. 2019 Mar 6. pii: S1097-2765(19)30054-1. doi:, 10.1016/j.molcel.2019.01.034. PMID:30876804 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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