Dokumente GGNB - Göttinger Graduiertenzentrum für Neurowissenschaften, Biophysik und molekulare Biowissenschaften nach Gutachter "Rehling, Peter Prof. Dr."
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Molecular characterization of Mst77F and implication in Drosophila spermatogenesis
(2013-04-19)The mechanisms of spermatogenesis, in particular the process of postmeiotic spermatid maturation, are little understood. During this developmental stage massive molecular and morphological rearrangements occur and the major ... -
Molecular Characterization of the Mitochondrial Presequence Translocase
(2018-01-31)In this thesis, multiple pore-lining amino acid residues of the mitochondrial presequence translocation channel Tim23 were identified as constituents of the channel’s cation filter by combining single channel electrophysiology ... -
Molecular mechanisms of lipid-rich myelin membrane sheet formation
(2013-02-13)Myelin is a membrane of vital importance. In the vertebrate nervous system, it promotes rapid conduction of nerve impulses via insulating the axons. To act as an insulator, myelin needs to assemble into a stable, lipid-rich ... -
Monitoring mitochondrial translation with spatial resolution and high throughput strategies
(2023-05-30)Nearly all mitochondrial proteins are encoded in the nuclear genome, synthesized in the cytosol, and imported into mitochondria. However, mitochondria are semi-autonomous and possess their own genome, the mitochondrial DNA ... -
Nuclear export of actin: A biochemical and structural perspective
(2015-08-18)Macromolecular exchange between the nucleus and the cytoplasm is mainly mediated by the RanGTP-dependent nuclear transport receptors (NTRs) of the Impβ family. NTRs are classified as importins and exportins according to ... -
Optimization of tools for multiplexed super resolution imaging of the synapse
(2020-07-09)The synapse is the major site of neurotransmission in the brain. Even though the synapse has been extensively studied, artefact-free imaging tools are still necessary for its correct investigation. With the resolution of ... -
Rab26 mediates selective targeting of synaptic vesicles to the autophagy pathway
(2015-02-26)In recent years it has been shown that macroautophagy regulates the turnover of postsynaptic receptors and modulates presynaptic neurotransmission. However it is still unclear whether the presynaptic protein turnover is ... -
Reconstitution of Doa10-mediated ER-associated protein degradation with purified components
(2020-11-09)ER-associated protein degradation (ERAD) is a protein quality control pathway at the ER membrane mediated by membrane-embedded ubiquitin ligase complexes. During ERAD, membrane and luminal proteins are ubiquitinated and ... -
Reconstitution of retrotranslocation by the Hrd1 ubiquitin ligase with purified components
(2020-03-11)In eukaryotic organisms, a large fraction of newly-synthesized proteins are destined for the endomembrane system or for secretion. The entry gate for these proteins is the endoplasmic reticulum (ER). Proteins are imported ... -
Residue level characterization of molecular interactions of intermembrane space domains governing the preprotein import into the mitochondrial matrix
(2014-12-10)Mitochondrial matrix targeting proteins are translated as preproteins (carrying an N-terminal 20-50 residue presequence) in the cytoplasm. Post-translationally, they are imported into the mitochondrial matrix through ... -
Structural and biophysical characterization of human pyruvate dehydrogenase multi-enzyme complex
(2017-11-24)Pyruvate dehydrogenase multi-enzyme complex (PDHc) is an assembly of multiple copies of four different proteins. Together they carry out the oxidative decarboxylation of pyruvate and generate acetyl-CoA and NADH, which are ... -
Structural and functional analyses of the HECT E3 ligase HACE1
(2024-04-19)Many crucial cellular processes rely on post-translational modifications. In particular, the covalent attachment of ubiquitin molecules, termed ubiquitylation, onto substrates, typically via lysine residues, is most commonly ... -
Structural and Functional Analysis of the Mitochondrial Presequence Translocase
(2012-09-14)The yeast, Saccharomyces cerevisiae, mitochondrial proteome consists of approximately 1000 proteins, most of which are synthesized on cytosolic ribosomes and therefore require specialized transport systems to reach their ... -
Structural and functional investigation of cargo recognition by exportins
(2016-11-02)Nucleocytoplasmic exchange is essential for eukaryotic cells. It proceeds through nuclear pore complexes and is largely mediated by Importin β-like nuclear transport receptors (Impβ-like NTRs). According to the direction ... -
Systematic Analysis of Molecular and Cellular Dysfunction in Accelerated Aging Phenotypes
(2021-09-24)Accelerated aging in multiple tissues is the connecting characteristic of the group of genetic disorders called segmental progeroid syndromes. At young ages, affected patients show many clinical features of aging-associated ... -
Systematic analysis of the interactome of modified chromatin
(2013-09-13)Regulation of chromatin composition and structure is crucial for maintaining genome integrity and execution of the wide array of functions related to gene regulation and downstream cell signaling. Chemical modifications ... -
The identification and characterization of Mio10 and MINOS1 as novel regulators of mitochondrial inner membrane organization
(2012-06-07)Various mitochondrial inner membrane proteins contribute to the structure of cristae membranes and to the overall dynamic morphology of the inner membrane. These proteins include the F1FOATPase dimers, which contribute to ... -
Yeast models to study mutations in SURF1 and MPV17 involved in human mitochondrial disorders
(2011-12-06)Mitochondrial diseases are fatal disorders mainly affecting highly energy dependent tissues such as brain, heart, liver and muscle. These severe disorders can be caused by mutations affecting mitochondrial- or nuclear-encoded ...