Lytovchenko, Oleksandr

[["dc.bibliographiccitation.firstpage","643"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","The Journal of Cell Biology"],["dc.bibliographiccitation.lastpage","656"],["dc.bibliographiccitation.volume","195"],["dc.contributor.author","Schulz, Christian"],["dc.contributor.author","Lytovchenko, Oleksandr"],["dc.contributor.author","Melin, Jonathan"],["dc.contributor.author","Chacinska, Agnieszka"],["dc.contributor.author","Guiard, Bernard"],["dc.contributor.author","Neumann, Piotr"],["dc.contributor.author","Ficner, Ralf"],["dc.contributor.author","Jahn, Olaf"],["dc.contributor.author","Schmidt, Bernhard"],["dc.contributor.author","Rehling, Peter"],["dc.date.accessioned","2017-09-07T11:43:19Z"],["dc.date.available","2017-09-07T11:43:19Z"],["dc.date.issued","2011"],["dc.description.abstract","N-terminal targeting signals (presequences) direct proteins across the TOM complex in the outer mitochondrial membrane and the TIM23 complex in the inner mitochondrial membrane. Presequences provide directionality to the transport process and regulate the transport machineries during translocation. However, surprisingly little is known about how presequence receptors interact with the signals and what role these interactions play during preprotein transport. Here, we identify signal-binding sites of presequence receptors through photo-affinity labeling. Using engineered presequence probes, photo cross-linking sites on mitochondrial proteins were mapped mass spectrometrically, thereby defining a presequence-binding domain of Tim50, a core subunit of the TIM23 complex that is essential for mitochondrial protein import. Our results establish Tim50 as the primary presequence receptor at the inner membrane and show that targeting signals and Tim50 regulate the Tim23 channel in an antagonistic manner."],["dc.identifier.doi","10.1083/jcb.201105098"],["dc.identifier.gro","3142630"],["dc.identifier.isi","000297206400012"],["dc.identifier.pmid","22065641"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8033"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/55"],["dc.notes.intern","WoS Import 2017-03-10"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Rockefeller Univ Press"],["dc.relation.issn","0021-9525"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Tim50's presequence receptor domain is essential for signal driven transport across the TIM23 complex"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","247"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Molecular Biology of the Cell"],["dc.bibliographiccitation.lastpage","257"],["dc.bibliographiccitation.volume","23"],["dc.contributor.author","Alkhaja, Alwaleed K."],["dc.contributor.author","Jans, Daniel C."],["dc.contributor.author","Nikolov, Miroslav"],["dc.contributor.author","Vukotic, Milena"],["dc.contributor.author","Lytovchenko, Oleksandr"],["dc.contributor.author","Ludewig, Fabian"],["dc.contributor.author","Schliebs, Wolfgang"],["dc.contributor.author","Riedel, Dietmar"],["dc.contributor.author","Urlaub, Henning"],["dc.contributor.author","Jakobs, Stefan"],["dc.contributor.author","Deckers, Markus"],["dc.date.accessioned","2017-09-07T11:49:01Z"],["dc.date.available","2017-09-07T11:49:01Z"],["dc.date.issued","2012"],["dc.description.abstract","The inner membrane of mitochondria is especially protein rich and displays a unique morphology characterized by large invaginations, the mitochondrial cristae, and the inner boundary membrane, which is in proximity to the outer membrane. Mitochondrial inner membrane proteins appear to be not evenly distributed in the inner membrane, but instead organize into functionally distinct subcompartments. It is unknown how the organization of the inner membrane is achieved. We identified MINOS1/MIO10 (C1orf151/YCL057C-A), a conserved mitochondrial inner membrane protein. mio10-mutant yeast cells are affected in growth on nonfermentable carbon sources and exhibit altered mitochondrial morphology. At the ultrastructural level, mutant mitochondria display loss of inner membrane organization. Proteomic analyses reveal MINOS1/Mio10 as a novel constituent of Mitofilin/Fcj1 complexes in human and yeast mitochondria. Thus our analyses reveal new insight into the composition of the mitochondrial inner membrane organizing machinery."],["dc.identifier.doi","10.1091/mbc.E11-09-0774"],["dc.identifier.gro","3142588"],["dc.identifier.isi","000299108000002"],["dc.identifier.pmid","22114354"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/7823"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/8955"],["dc.language.iso","en"],["dc.notes.intern","WoS Import 2017-03-10"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.issn","1059-1524"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","MINOS1 is a conserved component of mitofilin complexes and required for mitochondrial function and cristae organization"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","9"],["dc.bibliographiccitation.journal","BMC Molecular Biology"],["dc.bibliographiccitation.volume","13"],["dc.contributor.author","Fromm-Dornieden, Carolin"],["dc.contributor.author","Heyde, Silvia von der"],["dc.contributor.author","Lytovchenko, Oleksandr"],["dc.contributor.author","Salinas-Riester, Gabriela"],["dc.contributor.author","Brenig, Bertram B."],["dc.contributor.author","Beißbarth, Tim"],["dc.contributor.author","Baumgartner, Bernhard G."],["dc.date.accessioned","2018-11-07T09:12:11Z"],["dc.date.available","2018-11-07T09:12:11Z"],["dc.date.issued","2012"],["dc.description.abstract","Background: Control of translation allows for rapid adaptation of the cell to stimuli, rather than the slower transcriptional control. We presume that translational control is an essential process in the control of adipogenesis, especially in the first hours after hormonal stimulation. 3T3-L1 preadipocytes were cultured to confluency and adipogenesis was induced by standard protocols using a hormonal cocktail. Cells were harvested before and 6 hours after hormonal induction. mRNAs attached to ribosomes (polysomal mRNAs) were separated from unbound mRNAs by velocity sedimentation. Pools of polysomal and unbound mRNA fractions were analyzed by microarray analysis. Changes in relative abundance in unbound and polysomal mRNA pools were calculated to detect putative changes in translational activity. Changes of expression levels of selected genes were verified by qPCR and Western blotting. Results: We identified 43 genes that shifted towards the polysomal fraction (up-regulated) and 2 genes that shifted towards free mRNA fraction (down-regulated). Interestingly, we found Ghrelin to be down-regulated. Upregulated genes comprise factors that are nucleic acid binding (eIF4B, HSF1, IRF6, MYC, POLR2a, RPL18, RPL27a, RPL6, RPL7a, RPS18, RPSa, TSC22d3), form part of ribosomes (RPL18, RPL27a, RPL6, RPL7a, RPS18, RPSa), act on the regulation of translation (eIF4B) or transcription (HSF1, IRF6, MYC, TSC22d3). Others act as chaperones (BAG3, HSPA8, HSP90ab1) or in other metabolic or signals transducing processes. Conclusions: We conclude that a moderate reorganisation of the functionality of the ribosomal machinery and translational activity are very important steps for growth and gene expression control in the initial phase of adipogenesis."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2012"],["dc.identifier.doi","10.1186/1471-2199-13-9"],["dc.identifier.isi","000303817800001"],["dc.identifier.pmid","22436005"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/7594"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/26895"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Biomed Central Ltd"],["dc.relation.issn","1471-2199"],["dc.rights","CC BY 2.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/2.0"],["dc.title","Novel polysome messages and changes in translational activity appear after induction of adipogenesis in 3T3-L1 cells"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","86"],["dc.bibliographiccitation.journal","Nutrition & Metabolism"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Fromm-Dornieden, Carolin"],["dc.contributor.author","Lytovchenko, Oleksandr"],["dc.contributor.author","Heyde, Silvia von der"],["dc.contributor.author","Behnke, Nina"],["dc.contributor.author","Hogl, Sebastian"],["dc.contributor.author","Berghoff, Janina"],["dc.contributor.author","Koepper, Frederik"],["dc.contributor.author","Opitz, Lennart"],["dc.contributor.author","Renne, Ulla"],["dc.contributor.author","Hoeflich, Andreas"],["dc.contributor.author","Beißbarth, Tim"],["dc.contributor.author","Brenig, Bertram B."],["dc.contributor.author","Baumgartner, Bernhard G."],["dc.date.accessioned","2018-11-07T09:05:46Z"],["dc.date.available","2018-11-07T09:05:46Z"],["dc.date.issued","2012"],["dc.description.abstract","Background: DOR/TP53INP2 acts both at the chromosomal level as a nuclear co-factor e.g. for the thyroid hormone receptor and at the extrachromosomal level as an organizing factor of the autophagosome. In a previous study, DOR was shown to be down-regulated in skeletal muscle of obese diabetic Zucker fa/fa rats. Methods: To identify sites of differential DOR expression in metabolically active tissues, we measured differences in DOR expression in white adipose tissue (WAT), brown adipose tissue (BAT), skeletal muscle (SM) and heart muscle (HM) by qPCR. To assess whether DOR expression is influenced in the short term by nutritional factors, NMRI mice were fed different fat rich diets (fat diet, FD: 18% or high fat diet, HFD: 80% fat) for one week and DOR expression was compared to NMRI mice fed a control diet (normal diet, ND: 3.3% fat). Additionally, DOR expression was measured in young (45 days old) and adult (100 days old) genetically obese (DU6/DU6i) mice and compared to control (DUKs/DUKsi) animals. Results: ANOVA results demonstrate a significant influence of diet, tissue type and sex on DOR expression in adipose and muscle tissues of FD and HFD mice. In SM, DOR expression was higher in HFD than in FD male mice. In WAT, DOR expression was increased compared to BAT in male FD and HFD mice. In contrast, expression levels in female mice were higher in BAT for both dietary conditions. DOR expression levels in all tissues of 100 days old genetically obese animals were mainly influenced by sex. In HM, DOR expression was higher in male than female animals. Conclusions: DOR expression varies under the influence of dietary fat content, tissue type and sex. We identified target tissues for further studies to analyze the specific function of DOR in obesity. DOR might be part of a defense mechanism against fat storage in high fat diets or obesity."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2012"],["dc.identifier.doi","10.1186/1743-7075-9-86"],["dc.identifier.isi","000311434000001"],["dc.identifier.pmid","22995226"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8284"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/25404"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Biomed Central Ltd"],["dc.relation.issn","1743-7075"],["dc.rights","CC BY 2.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/2.0"],["dc.title","Extrinsic and intrinsic regulation of DOR/TP53INP2 expression in mice: effects of dietary fat content, tissue type and sex in adipose and muscle tissues"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","83"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","The Journal of Cell Biology"],["dc.bibliographiccitation.lastpage","92"],["dc.bibliographiccitation.volume","216"],["dc.contributor.author","Schendzielorz, Alexander Benjamin"],["dc.contributor.author","Schulz, Christian"],["dc.contributor.author","Lytovchenko, Oleksandr"],["dc.contributor.author","Clancy, Anne"],["dc.contributor.author","Guiard, Bernard"],["dc.contributor.author","Ieva, Raffaele"],["dc.contributor.author","van der Laan, Martin"],["dc.contributor.author","Rehling, Peter"],["dc.date.accessioned","2017-09-07T11:53:21Z"],["dc.date.available","2017-09-07T11:53:21Z"],["dc.date.issued","2017"],["dc.description.abstract","wo driving forces energize precursor translocation across the inner mitochondrial membrane. Although the membrane potential (Δψ) is considered to drive translocation of positively charged presequences through the TIM23 complex (presequence translocase), the activity of the Hsp70-powered import motor is crucial for the translocation of the mature protein portion into the matrix. In this study, we show that mitochondrial matrix proteins display surprisingly different dependencies on the Δψ. However, a precursor's hypersensitivity to a reduction of the Δψ is not linked to the respective presequence, but rather to the mature portion of the polypeptide chain. The presequence translocase constituent Pam17 is specifically recruited by the receptor Tim50 to promote the transport of hypersensitive precursors into the matrix. Our analyses show that two distinct Δψ-driven translocation steps energize precursor passage across the inner mitochondrial membrane. The Δψ- and Pam17-dependent import step identified in this study is positioned between the two known energy-dependent steps: Δψ-driven presequence translocation and adenosine triphosphate-driven import motor activity."],["dc.identifier.doi","10.1083/jcb.201607066"],["dc.identifier.gro","3145078"],["dc.identifier.pmid","28011846"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/2774"],["dc.identifier.url","https://sfb1190.med.uni-goettingen.de/production/literature/publications/7"],["dc.language.iso","en"],["dc.notes.intern","Crossref Import"],["dc.notes.status","final"],["dc.relation","SFB 1190: Transportmaschinen und Kontaktstellen zellulärer Kompartimente"],["dc.relation","SFB 1190 | Z03: Synthetische genetische Analyse, automatisierte Mikroskopie und Bildanalyse"],["dc.relation.issn","0021-9525"],["dc.relation.workinggroup","RG Rehling (Mitochondrial Protein Biogenesis)"],["dc.relation.workinggroup","RG Schwappach (Membrane Protein Biogenesis)"],["dc.rights","CC BY-NC-SA 4.0"],["dc.title","Two distinct membrane potential–dependent steps drive mitochondrial matrix protein translocation"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]