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Dermouche S, Chagot ME, Manival X, Quinternet M. Optimizing the First TPR Domain of the Human SPAG1 Protein Provides Insight into the HSP70 and HSP90 Binding Properties. Biochemistry 2021; 60:2349-2363. [PMID: 33739091 DOI: 10.1021/acs.biochem.1c00052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Tetratricopeptide repeat domains, or TPR domains, are protein domains that mediate protein:protein interaction. As they allow contacts between proteins, they are of particular interest in transient steps of the assembly process of macromolecular complexes, such as the ribosome or the dynein arms. In this study, we focused on the first TPR domain of the human SPAG1 protein. SPAG1 is a multidomain protein that is important for ciliogenesis whose known mutations are linked to primary ciliary dyskinesia syndrome. It can interact with the chaperones RUVBL1/2, HSP70, and HSP90. Using protein sequence optimization in combination with structural and biophysical approaches, we analyzed, with atomistic precision, how the C-terminal tails of HSPs bind a variant form of SPAG1-TPR1 that mimics the wild-type domain. We discuss our results with regard to other complex three-dimensional structures with the aim of highlighting the motifs in the TPR sequences that could drive the positioning of the HSP peptides. These data could be important for the druggability of TPR regulators.
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Affiliation(s)
- Sana Dermouche
- Université de Lorraine, CNRS, IMoPA, F-54000 Nancy, France
| | | | - Xavier Manival
- Université de Lorraine, CNRS, IMoPA, F-54000 Nancy, France
| | - Marc Quinternet
- Université de Lorraine, CNRS, INSERM, IBSLor, F-54000 Nancy, France
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Quinternet M, Rothé B, Barbier M, Bobo C, Saliou JM, Jacquemin C, Back R, Chagot ME, Cianférani S, Meyer P, Branlant C, Charpentier B, Manival X. Structure/Function Analysis of Protein-Protein Interactions Developed by the Yeast Pih1 Platform Protein and Its Partners in Box C/D snoRNP Assembly. J Mol Biol 2015. [PMID: 26210662 DOI: 10.1016/j.jmb.2015.07.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In eukaryotes, nucleotide post-transcriptional modifications in RNAs play an essential role in cell proliferation by contributing to pre-ribosomal RNA processing, ribosome assembly and activity. Box C/D small nucleolar ribonucleoparticles catalyze site-specific 2'-O-methylation of riboses, one of the most prevalent RNA modifications. They contain one guide RNA and four core proteins and their in vivo assembly requires numerous factors including (HUMAN/Yeast) BCD1/Bcd1p, NUFIP1/Rsa1p, ZNHIT3/Hit1p, the R2TP complex composed of protein PIH1D1/Pih1p and RPAP3/Tah1p that bridges the R2TP complex to the HSP90/Hsp82 chaperone and two AAA+ ATPases. We show that Tah1p can stabilize Pih1p in the absence of Hsp82 activity during the stationary phase of growth and consequently that the Tah1p:Pih1p interaction is sufficient for Pih1p stability. This prompted us to establish the solution structure of the Tah1p:Pih1p complex by NMR. The C-terminal tail S93-S111 of Tah1p snakes along Pih1p264-344 folded in a CS domain to form two intermolecular β-sheets and one covering loop. However, a thorough inspection of the NMR and crystal structures revealed structural differences that may be of functional importance. In addition, our NMR and isothermal titration calorimetry data revealed the formation of direct contacts between Pih1p257-344 and the Hsp82MC domain in the presence of Tah1p. By co-expression in Escherichia coli, we demonstrate that Pih1p has two other direct partners, the Rsa1p assembly factor and the Nop58p core protein, and in vivo and in vitro experiments mapped the required binding domains. Our data suggest that these two interactions are mutually exclusive. The implication of this finding for box C/D small nucleolar ribonucleoparticle assembly is discussed.
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Affiliation(s)
- Marc Quinternet
- FR 3209 CNRS-Université de Lorraine, Bioingénierie Moléculaire, Cellulaire et Thérapeutique, Biopôle, Campus Biologie-Santé, CS 50184, 54505 Vandœuvre-lès-Nancy Cedex, France
| | - Benjamin Rothé
- Ingénierie Moléculaire et Physiopathologie Articulaire, UMR 7365 CNRS-Université de Lorraine, Biopôle, Campus Biologie Santé, 9 Avenue de la Forêt de Haye, CS 50184, 54505 Vandœuvre-lès-Nancy Cedex, France
| | - Muriel Barbier
- Ingénierie Moléculaire et Physiopathologie Articulaire, UMR 7365 CNRS-Université de Lorraine, Biopôle, Campus Biologie Santé, 9 Avenue de la Forêt de Haye, CS 50184, 54505 Vandœuvre-lès-Nancy Cedex, France
| | - Claude Bobo
- Ingénierie Moléculaire et Physiopathologie Articulaire, UMR 7365 CNRS-Université de Lorraine, Biopôle, Campus Biologie Santé, 9 Avenue de la Forêt de Haye, CS 50184, 54505 Vandœuvre-lès-Nancy Cedex, France
| | - Jean-Michel Saliou
- BioOrganic Mass Spectrometry Laboratory, IPHC-DSA, UMR 7178 Université de Strasbourg-CNRS, 25 rue Becquerel, 67087 Strasbourg, France
| | - Clémence Jacquemin
- Ingénierie Moléculaire et Physiopathologie Articulaire, UMR 7365 CNRS-Université de Lorraine, Biopôle, Campus Biologie Santé, 9 Avenue de la Forêt de Haye, CS 50184, 54505 Vandœuvre-lès-Nancy Cedex, France
| | - Régis Back
- Ingénierie Moléculaire et Physiopathologie Articulaire, UMR 7365 CNRS-Université de Lorraine, Biopôle, Campus Biologie Santé, 9 Avenue de la Forêt de Haye, CS 50184, 54505 Vandœuvre-lès-Nancy Cedex, France
| | - Marie-Eve Chagot
- Ingénierie Moléculaire et Physiopathologie Articulaire, UMR 7365 CNRS-Université de Lorraine, Biopôle, Campus Biologie Santé, 9 Avenue de la Forêt de Haye, CS 50184, 54505 Vandœuvre-lès-Nancy Cedex, France
| | - Sarah Cianférani
- BioOrganic Mass Spectrometry Laboratory, IPHC-DSA, UMR 7178 Université de Strasbourg-CNRS, 25 rue Becquerel, 67087 Strasbourg, France
| | - Philippe Meyer
- Sorbonne Universités, UPMC University Paris 6, CNRS, UMR 8226, Laboratoire de Biologie Moléculaire et Cellulaire des Eucaryotes, Institut de Biologie Physico-Chimique, 13 rue Pierre et Marie Curie, 75005 Paris, France
| | - Christiane Branlant
- Ingénierie Moléculaire et Physiopathologie Articulaire, UMR 7365 CNRS-Université de Lorraine, Biopôle, Campus Biologie Santé, 9 Avenue de la Forêt de Haye, CS 50184, 54505 Vandœuvre-lès-Nancy Cedex, France
| | - Bruno Charpentier
- Ingénierie Moléculaire et Physiopathologie Articulaire, UMR 7365 CNRS-Université de Lorraine, Biopôle, Campus Biologie Santé, 9 Avenue de la Forêt de Haye, CS 50184, 54505 Vandœuvre-lès-Nancy Cedex, France
| | - Xavier Manival
- Ingénierie Moléculaire et Physiopathologie Articulaire, UMR 7365 CNRS-Université de Lorraine, Biopôle, Campus Biologie Santé, 9 Avenue de la Forêt de Haye, CS 50184, 54505 Vandœuvre-lès-Nancy Cedex, France.
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