6fdp | pdb_00006fdp

NMR structure of the second TPR domain of the human RPAP3 protein in complex with HSP90 peptide DTSRMEEVD

spinqualitylabelsall models 6fdp, 20 NMR models Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6fdp is a 2 chain structure with sequence from Human. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Gene: RPAP3 (HUMAN), HSP90AA1, HSP90A, HSPC1, HSPCA (HUMAN) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [RPAP3_HUMAN] Forms an interface between the RNA polymerase II enzyme and chaperone/scaffolding protein, suggesting that it is required to connect RNA polymerase II to regulators of protein complex formation. [HS90A_HUMAN] Molecular chaperone that promotes the maturation, structural maintenance and proper regulation of specific target proteins involved for instance in cell cycle control and signal transduction. Undergoes a functional cycle that is linked to its ATPase activity. This cycle probably induces conformational changes in the client proteins, thereby causing their activation. Interacts dynamically with various co-chaperones that modulate its substrate recognition, ATPase cycle and chaperone function. Publication Abstract from PubMed RPAP3 and PIH1D1 are part of the HSP90 co-chaperone R2TP complex involved in the assembly process of many molecular machines. In this study, we performed a deep structural investigation of the HSP binding abilities of the two TPR domains of RPAP3. We combined 3D NMR, non-denaturing MS, and ITC techniques with Y2H, IP-LUMIER, FRET, and ATPase activity assays and explain the fundamental role played by the second TPR domain of RPAP3 in the specific recruitment of HSP90. We also established the 3D structure of an RPAP3:PIH1D1 sub-complex demonstrating the need for a 34-residue insertion, specific of RPAP3 isoform 1, for the tight binding of PIH1D1. We also confirm the existence of a complex lacking PIH1D1 in human cells (R2T), which shows differential binding to certain clients. These results highlight similarities and differences between the yeast and human R2TP complexes, and document the diversification of this family of co-chaperone complexes in human. Deep Structural Analysis of RPAP3 and PIH1D1, Two Components of the HSP90 Co-chaperone R2TP Complex.,Henri J, Chagot ME, Bourguet M, Abel Y, Terral G, Maurizy C, Aigueperse C, Georgescauld F, Vandermoere F, Saint-Fort R, Behm-Ansmant I, Charpentier B, Pradet-Balade B, Verheggen C, Bertrand E, Meyer P, Cianferani S, Manival X, Quinternet M Structure. 2018 Jul 18. pii: S0969-2126(18)30208-9. doi:, 10.1016/j.str.2018.06.002. PMID:30033218 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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