Callegari, Sylvie

[["dc.bibliographiccitation.firstpage","4135"],["dc.bibliographiccitation.issue","23"],["dc.bibliographiccitation.journal","Human Molecular Genetics"],["dc.bibliographiccitation.lastpage","4144"],["dc.bibliographiccitation.volume","27"],["dc.contributor.author","Pacheu-Grau, David"],["dc.contributor.author","Callegari, Sylvie"],["dc.contributor.author","Emperador, Sonia"],["dc.contributor.author","Thompson, Kyle"],["dc.contributor.author","Aich, Abhishek"],["dc.contributor.author","Topol, Sarah E."],["dc.contributor.author","Spencer, Emily G."],["dc.contributor.author","McFarland, Robert"],["dc.contributor.author","Ruiz-Pesini, Eduardo"],["dc.contributor.author","Torkamani, Ali"],["dc.contributor.author","Taylor, Robert W."],["dc.contributor.author","Montoya, Julio"],["dc.contributor.author","Rehling, Peter"],["dc.date.accessioned","2019-07-09T11:50:15Z"],["dc.date.available","2019-07-09T11:50:15Z"],["dc.date.issued","2018"],["dc.description.abstract","Protein import into mitochondria is facilitated by translocases within the outer and the inner mitochondrial membranes that are dedicated to a highly specific subset of client proteins. The mitochondrial carrier translocase (TIM22 complex) inserts multispanning proteins, such as mitochondrial metabolite carriers and translocase subunits (TIM23, TIM17A/B and TIM22), into the inner mitochondrial membrane. Both types of substrates are essential for mitochondrial metabolic function and biogenesis. Here, we report on a subject, diagnosed at 1.5 years, with a neuromuscular presentation, comprising hypotonia, gastroesophageal reflux disease and persistently elevated serum and Cerebrospinal fluid lactate (CSF). Patient fibroblasts displayed reduced oxidative capacity and altered mitochondrial morphology. Using trans-mitochondrial cybrid cell lines, we excluded a candidate variant in mitochondrial DNA as causative of these effects. Whole-exome sequencing identified compound heterozygous variants in the TIM22 gene (NM_013337), resulting in premature truncation in one allele (p.Tyr25Ter) and a point mutation in a conserved residue (p.Val33Leu), within the intermembrane space region, of the TIM22 protein in the second allele. Although mRNA transcripts of TIM22 were elevated, biochemical analyses revealed lower levels of TIM22 protein and an even greater deficiency of TIM22 complex formation. In agreement with a defect in carrier translocase function, carrier protein amounts in the inner membrane were found to be reduced. This is the first report of pathogenic variants in the TIM22 pore-forming subunit of the carrier translocase affecting the biogenesis of inner mitochondrial membrane proteins critical for metabolite exchange."],["dc.identifier.doi","10.1093/hmg/ddy305"],["dc.identifier.pmid","30452684"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15894"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59733"],["dc.identifier.url","https://sfb1190.med.uni-goettingen.de/production/literature/publications/51"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation","SFB 1190: Transportmaschinen und Kontaktstellen zellulärer Kompartimente"],["dc.relation","SFB 1190 | P13: Protein Transport über den mitochondrialen Carrier Transportweg"],["dc.relation.issn","1460-2083"],["dc.relation.workinggroup","RG Rehling (Mitochondrial Protein Biogenesis)"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.ddc","610"],["dc.title","Mutations of the mitochondrial carrier translocase channel subunit TIM22 cause early-onset mitochondrial myopathy"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","4147"],["dc.bibliographiccitation.issue","23"],["dc.bibliographiccitation.journal","FEBS Letters"],["dc.bibliographiccitation.lastpage","4158"],["dc.bibliographiccitation.volume","590"],["dc.contributor.author","Callegari, Sylvie"],["dc.contributor.author","Richter, Frank"],["dc.contributor.author","Chojnacka, Katarzyna"],["dc.contributor.author","Jans, Daniel C."],["dc.contributor.author","Lorenzi, Isotta"],["dc.contributor.author","Pacheu-Grau, David"],["dc.contributor.author","Jakobs, Stefan"],["dc.contributor.author","Lenz, Christof"],["dc.contributor.author","Urlaub, Henning"],["dc.contributor.author","Dudek, Jan"],["dc.contributor.author","Chacinska, Agnieszka"],["dc.contributor.author","Rehling, Peter"],["dc.date.accessioned","2017-09-07T11:53:09Z"],["dc.date.available","2017-09-07T11:53:09Z"],["dc.date.issued","2016"],["dc.description.abstract","Hydrophobic inner mitochondrial membrane proteins with internal targeting signals, such as the metabolite carriers, use the carrier translocase (TIM22 complex) for transport into the inner membrane. Defects in this transport pathway have been associated with neurodegenerative disorders. While the TIM22 complex is well studied in baker's yeast, very little is known about the mammalian TIM22 complex. Using immunoprecipitation, we purified the human carrier translocase and identified a mitochondrial inner membrane protein TIM29 as a novel component, specific to metazoa. We show that TIM29 is a constituent of the 440 kDa TIM22 complex and interacts with oxidized TIM22. Our analyses demonstrate that TIM29 is required for the structural integrity of the TIM22 complex and for import of substrate proteins by the carrier translocase."],["dc.identifier.doi","10.1002/1873-3468.12450"],["dc.identifier.fs","625768"],["dc.identifier.gro","3145043"],["dc.identifier.pmid","27718247"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14166"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/2736"],["dc.identifier.url","https://sfb1190.med.uni-goettingen.de/production/literature/publications/59"],["dc.language.iso","en"],["dc.notes.intern","Crossref Import"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation","SFB 1190: Transportmaschinen und Kontaktstellen zellulärer Kompartimente"],["dc.relation","SFB 1190 | P01: Untersuchung der Unterschiede in der Zusammensetzung, Funktion und Position von individuellen MICOS Komplexen in einzelnen Säugerzellen"],["dc.relation","SFB 1190 | P13: Protein Transport über den mitochondrialen Carrier Transportweg"],["dc.relation","SFB 1190 | Z02: Massenspektrometrie-basierte Proteomanalyse"],["dc.relation.issn","0014-5793"],["dc.relation.workinggroup","RG Jakobs (Structure and Dynamics of Mitochondria)"],["dc.relation.workinggroup","RG Rehling (Mitochondrial Protein Biogenesis)"],["dc.relation.workinggroup","RG Urlaub (Bioanalytische Massenspektrometrie)"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","TIM29 is a subunit of the human carrier translocase required for protein transport"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1119"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Current Biology"],["dc.bibliographiccitation.lastpage","1127.e5"],["dc.bibliographiccitation.volume","30"],["dc.contributor.author","Gomkale, Ridhima"],["dc.contributor.author","Cruz-Zaragoza, Luis Daniel"],["dc.contributor.author","Suppanz, Ida E."],["dc.contributor.author","Guiard, Bernard"],["dc.contributor.author","Montoya, Julio"],["dc.contributor.author","Callegari, Sylvie"],["dc.contributor.author","Pacheu-Grau, David"],["dc.contributor.author","Warscheid, Bettina"],["dc.contributor.author","Rehling, Peter"],["dc.date.accessioned","2020-04-29T13:50:08Z"],["dc.date.available","2020-04-29T13:50:08Z"],["dc.date.issued","2020-03-23"],["dc.description.abstract","In mitochondria, the carrier translocase (TIM22 complex) facilitates membrane insertion of multi-spanning proteins with internal targeting signals into the inner membrane [1-3]. Tom70, a subunit of TOM complex, represents the major receptor for these precursors [2, 4-6]. After transport across the outer membrane, the hydrophobic carriers engage with the small TIM protein complex composed of Tim9 and Tim10 for transport across the intermembrane space (IMS) toward the TIM22 complex [7-12]. Tim22 represents the pore-forming core unit of the complex [13, 14]. Only a small subset of TIM22 cargo molecules, containing four or six transmembrane spans, have been experimentally defined. Here, we used a tim22 temperature-conditional mutant to define the TIM22 substrate spectrum. Along with carrier-like cargo proteins, we identified subunits of the mitochondrial pyruvate carrier (MPC) as unconventional TIM22 cargos. MPC proteins represent substrates with atypical topology for this transport pathway. In agreement with this, a patient affected in TIM22 function displays reduced MPC levels. Our findings broaden the repertoire of carrier pathway substrates and challenge current concepts of TIM22-mediated transport processes."],["dc.identifier.doi","10.1016/j.cub.2020.01.024"],["dc.identifier.pmid","32142709"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/64483"],["dc.identifier.url","https://sfb1190.med.uni-goettingen.de/production/literature/publications/107"],["dc.language.iso","en"],["dc.relation","SFB 1190: Transportmaschinen und Kontaktstellen zellulärer Kompartimente"],["dc.relation","SFB 1190 | P13: Protein Transport über den mitochondrialen Carrier Transportweg"],["dc.relation.eissn","1879-0445"],["dc.relation.issn","0960-9822"],["dc.relation.workinggroup","RG Rehling (Mitochondrial Protein Biogenesis)"],["dc.rights","CC BY-NC-ND 4.0"],["dc.title","Defining the Substrate Spectrum of the TIM22 Complex Identifies Pyruvate Carrier Subunits as Unconventional Cargos"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]