Dataset Information

Definition of a high-confidence mitochondrial proteome at quantitative scale_submitochondrial profiling

ABSTRACT: Mitochondria perform central functions in cellular bioenergetics, metabolism and signaling and their malfunction has been linked to numerous diseases. The available studies cover only part of the mitochondrial proteome and a separation of core mitochondrial proteins from associated fractions has not been achieved. We developed an integrative, quantitative MS-based experimental approach to define the high confidence proteome of yeast mitochondria and to identify new mitochondrial proteins. The analysis includes protein abundance under fermentable and non-fermentable growth, submitochondrial localization, single-protein analysis and subcellular classification of mitochondria-associated fractions. We identified novel mitochondrial interactors of respiratory chain supercomplexes, ATP synthase, AAA proteases, the mitochondrial contact site and cristae organizing system (MICOS) and coenzyme Q biosynthesis cluster as well as new mitochondrial proteins with dual cellular localization. The integrative proteome provides a high confidence source for the characterization of physiological and pathophysiological functions of mitochondria and their integration into the cellular environment.

INSTRUMENT(S): LTQ Orbitrap Elite, Q Exactive

ORGANISM(S): Saccharomyces Cerevisiae (baker's Yeast)

SUBMITTER: Christian D. Peikert

LAB HEAD: Prof. Dr. Bettina Warscheid

PROVIDER: PXD007618 | Pride | 2017-12-06

REPOSITORIES: Pride

ACCESS DATA

Publications

Definition of a High-Confidence Mitochondrial Proteome at Quantitative Scale.

Morgenstern Marcel M Stiller Sebastian B SB Lübbert Philipp P Peikert Christian D CD Dannenmaier Stefan S Drepper Friedel F Weill Uri U Höß Philipp P Feuerstein Reinhild R Gebert Michael M Bohnert Maria M van der Laan Martin M Schuldiner Maya M Schütze Conny C Oeljeklaus Silke S Pfanner Nikolaus N Wiedemann Nils N Warscheid Bettina B

Cell reports 20170601 13

Mitochondria perform central functions in cellular bioenergetics, metabolism, and signaling, and their dysfunction has been linked to numerous diseases. The available studies cover only part of the mitochondrial proteome, and a separation of core mitochondrial proteins from associated fractions has not been achieved. We developed an integrative experimental approach to define the proteome of yeast mitochondria. We classified > 3,300 proteins of mitochondria and mitochondria-associated fractions ...[more]

PMID: 28658629

Similar Datasets

Project description:Arabidopsis thaliana plants that have experienced an initial exposure to dehydration stress (“trained plants”) have an increased ability to maintain leaf relative water content (RWC) during subsequent stresses than plants experiencing the stress for the first time and transcription of selected dehydration response genes is altered during successive exposures to dehydration stress. This physiological and transcriptional behavior of trained plants is consistent with a “memory “of an earlier stress. It is unknown whether such memory is present in other Angiosperm lineages and whether it is an evolutionarily conserved response to stress (see E-GEOD-48235). Here, we analyzed the behavior and transcriptomes of maize (Zea mays) plants experiencing multiple dehydration stresses and compare them with responses of the evolutionarily distant A. thaliana. We found structurally related genes in maize that displayed the same memory-type responses as in A. thaliana, providing evidence of the conservation of function and transcriptional memory in the evolution of plants’ dehydration stress response systems. Similar to A. thaliana, trained Z. mays plants retained higher RWC during dehydration stress than untrained plants, due in part to maintaining reduced stomatal conductance, despite full recovery of RWC, after the first stress. Divergent transcriptional memory responses were also expressed, suggesting diversification of function among stress memory genes. Some dehydration stress memory genes were also shared with other stress and hormone responding pathways, indicating complex and dynamic interactions between different plant signaling networks. The results provide new insight into how plants respond to multiple dehydration stresses and provide a platform for studies of the functions of memory genes in adaptive responses to water deficit in monocot and eudicot plants . For each condition (water, S1, and S3) the transcriptome was sequenced for two replicates. The watered condition is considered the control.

Project description:1α,25(OH)2VD3 is the most active form of VD3 in animals and it plays an important role in regulating mineral metabolism but also reproduction and immunity. Testes are the main reproductive organs of male mammals. In order to study the effect of 1α,25(OH)2VD3 on early testicular development, 140 weaned 21-day old piglets were selected. The piglets were randomly divided into four groups and were fed a commercial diet supplemented with 0, 1, 2 and 4 μg.kg-1 of 1α,25(OH)2VD3, provided as 1α,25(OH)2VD3-glycosides, 60 days after the start of the experiment, at piglet age 82 days, testes were harvested. The morphology and histology of early testicular development were assessed. In addition, the proteomic TMT/iTRAQ labeling technique was used to analyze the protein profile of the testes in each group. Western blotting was used to verify the target of differentially abundant proteins (DAPs). The results showed that of the identified 132715 peptides, 122755 were specific peptides. 7852 proteins, of which 6573 proteins contain quantitative information. Screening for DAPs was focused on proteins closely related to the regulation of the testicular development such as steroid hormone synthesis, steroid biosynthesis, peroxisome and fatty acid metabolism pathways. These results also indicate that 1α,25(OH)2VD3 is involved in the regulation of early testicular development in piglets. At the same time, these findings provide valuable information for the proteins involved in the regulation of testicular development, and help to better understand the mechanisms of 1α,25(OH)2VD3 in regulating the development of piglets’ testes. Significance: The early development of the testes of breeding boars is closely related to their lifetime fertility. Our research identifies potential signaling pathways and differentially abundant proteins associated with testicular development. These findings indicate that plants containing 1α,25(OH)2VD3-glycosides used as a nutritional ingredient may help early testicular development in breeding boars and reveal the regulatory mechanism of 1α,25(OH)2VD3 on testicular development.

Dataset Information

Definition of a high-confidence mitochondrial proteome at quantitative scale_submitochondrial profiling

Publications

Definition of a High-Confidence Mitochondrial Proteome at Quantitative Scale.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure