Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Cryo-electron microscopy unravels microtubule inner protein networks reinforcing mammalian sperm flagella

ABSTRACT: To find and fuse with the egg, mammalian sperm must complete an arduous voyage through the female reproductive tract. This odyssey is powered by the sperm tail, a specialized motile cilium. Mammalian sperm tails are reinforced at the molecular scale with sperm-specific microtubule inner proteins (sperm-MIPs), but the identities of these sperm-MIPs are unknown. Here, we report high-resolution cryo-electron microscopy structures of bovine sperm doublet microtubules (DMTs), allowing us to identify many sperm-MIPs. We also resolve structures of singlet MTs in the endpiece, revealing MIPs shared between singlet and doublet MTs. We demonstrate that at least two sperm-MIPs bind and stabilize MTs in vitro. Our structures shed light on ciliary diversity across cell types and provide structural frameworks for understanding molecular underpinnings of male infertility

INSTRUMENT(S): Orbitrap Fusion Lumos

ORGANISM(S): Bos Taurus (bovine)

TISSUE(S): Spermatozoon

SUBMITTER: Riccardo Zenezini Chiozzi

LAB HEAD: Albert Heck

PROVIDER: PXD035941 | Pride | 2023-06-20

REPOSITORIES: Pride

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
	20210319_L1_UM5_zenez001_SA_BovineSperm_SCXfrac_DSSO_2h_rep01_fr03.raw	Raw
	20210319_L1_UM5_zenez001_SA_BovineSperm_SCXfrac_DSSO_2h_rep01_fr04.raw	Raw
	20210319_L1_UM5_zenez001_SA_BovineSperm_SCXfrac_DSSO_2h_rep01_fr05.raw	Raw
	20210319_L1_UM5_zenez001_SA_BovineSperm_SCXfrac_DSSO_2h_rep01_fr06.raw	Raw
	20210319_L1_UM5_zenez001_SA_BovineSperm_SCXfrac_DSSO_2h_rep01_fr07.raw	Raw

Items per page:

1 - 5 of 97

Similar Datasets

A New Mediator of Singlet Oxygen Responses in Chlamydomonas and Arabidopsis

Project description:We identified a small zinc finger protein, MBS, as a new mediator of singlet oxygen responses in Chlamydomonas and Arabidopsis. MBS is required for induction of singlet oxygen-dependent gene expression and, upon oxidative stress, accumulates in distinct granules in the cytosol of Arabidopsis cells. First, we recorded changes in light stress-regulated gene expression profiles after genetically perturbing MBS function by isolating mutants for the two MBS genes (MBS1 and MBS2) and by overexpression of MBS1 in Arabidopsis thaliana. Then, these light stress-related gene expression profiles were analyzed with respect to genes specifically responding to singlet oxygen and hydrogen peroxide/superoxide. The results indicated that MBS inactivation leads to an impaired response to singlet oxygen signaling under light stress. Knock-out or knock-down of the MBS1 and MBS2 genes and overexpression of MBS1 in Arabidopsis thaliana were compared with the wild type and the flu mutant as controls under light stress. Arabidopsis seedlings of mbs1-1, RNAi-MBS2/mbs1-1, 35S:MBS1, the wild type and the flu mutant were harvested at 0 h and 3 h of light stress (HL, 1000 µE m−2 s−1). Total RNA was extracted and cDNA was hybridized to Affymetrix ATH1 microarrays in three biological replicates.

2014-04-21 | E-GEOD-49596 | biostudies-arrayexpress

Dynamic profiling of the protein life cycle in response to pathogens (protein)

Project description:Protein expression is regulated by production and degradation of mRNAs and proteins, but their specific relationships remain unknown. We combine measurements of protein production and degradation and mRNA dynamics to build a quantitative genomic model of the differential regulation of gene expression in LPS stimulated mouse dendritic cells. Changes in mRNA abundance play a dominant role in determining most dynamic fold changes in protein levels. Conversely, the preexisting proteome of proteins performing basic cellular functions is remodeled primarily through changes in protein production or degradation, accounting for over half of the absolute change in protein molecules in the cell. Thus, the proteome is regulated by transcriptional induction of novel cellular functions and remodeling of preexisting functions through the protein life cycle. Mouse primary dendritic cells were treated with LPS or mock stimulus and profiled over a 12-hour time course. Cells were grown in M-labeled SILAC media, which was replaced with H-labeled SILAC media at time 0. Aliquots were taken at 0, 0.5, 1, 2, 3, 4, 5, 6, 9, and 12 hours post-stimulation and added to equal volumes of a master mix of unlabeled (L) cells for the purpose of normalization. RNA-Seq was performed at 0, 1, 2, 4, 6, 9, and 12 hours post-stimulation.

2015-03-06 | E-GEOD-59792 | biostudies-arrayexpress

Extracellular whole cell cross-liking of B cells (JY)

Project description:We performed XL-MS on the extracellular region of whole B cells (JY). The human leukocyte antigen (HLA) was the most cross-linked membrane protein where the most common interactor of and HLA was another HLA. We were able to model HLA-HLA interaction using the structural information the cross-links provide.

2021-05-28 | PXD022675 | Pride

TMEM232 is required for the formation of sperm flagellum and male fertility in mice

Project description:Asthenoteratozoospermia is a major cause of male infertility. Thus far, the identified related genes can explain only a small share of asthenoteratozoospermia cases, suggesting the involvement of other genes. The transmembrane protein TMEM232 is highly expressed in mouse testes. In the present study, to determine its function of TMEM232 in testes, we constructed a Tmem232-null mouse model using CRISPR–Cas9 technology. Tmem232 knockout (KO) male mice was completely infertile, and their sperm were immotile, with morphological defects of the flagellum. Electron microscopy revealed an aberrant midpiece-principal junction and the loss of the fourth of nine doublet microtubules in the sperm of Tmem232-/-mice. Sperm cells presented an 8+2 conformation and an irregular arrangement of the mitochondrial sheath. Proteomic analysis indicated a downregulation in the expression of proteins associated with flagellar motility, sperm capacitation, and the integrity and stability of sperm structure, as well as an upregulation in the expression of multiple ribosome components in TMEM232-deficient spermatids. Additionally, TMEM232 was observed to be involved in ribophagy by interacting with autophagy-related proteins, such as ATG14 and ARMC3, to regulate ribosome homeostasis during spermiogenesis. These results suggest that TMEM232 is essential for normal sperm flagellum formation and plays an important role in the autophagic elimination of cytosolic ribosomes to provide energy for flagellar motility.

2024-06-06 | GSE268908 | GEO

mitochondria cross-linking mass spectrometry

Project description:We performed cross-linking mass spectrometry experiments on intact mitochondria isolated from mouse heart in two conditions, native-state and high-salt treatment to disrupt electrostatic interactions. Both conditions were provided in biological replicates.

2017-12-11 | PXD006816 | Pride

cross-linking mass spectrometry of synaptosome

Project description:Cross-linking mass spectrometry data of synaptosome and microsome fractions of mouse cerebellum and hippocampus.

2020-12-03 | PXD010317 | Pride

Transcription profiling by array of Arabidopsis wild type and topoIV mutant plants at the end of a dark period and after re-illumination

Project description:A topoisomeras IV mutant in a flu background was identified in a mutant screen for ectopic activation of a reporter for singlet oxygen release. Gene expression was profiled on AGRONOMCS1 microarrays for wild type and the topoIV mutant at the end of an 8h dark period and after 30min of re-illumination.

2011-01-01 | E-TABM-1076 | biostudies-arrayexpress

Expression data from Arabidopsis thaliana (Ler) rosette leaves after the release of singlet oxygen inside plastids

Project description:We used the flu mutant of Arabidopsis to detail gene expression in response to singlet oxygen. The conditional flu mutant of Arabidopsis accumulates excess protochlorophyllide in the dark within chloroplast membranes that upon illumination acts as a photosensitizer and generates singlet oxygen. Immediately after the release of singlet oxygen mature flu plants stop growing, whereas seedlings bleach and die. Within the first 30 min after the release of singlet oxygen rapid changes in nuclear gene expression occur. Distinct sets of genes were activated that were different from those induced by other reactive oxygen species, superoxide or hydrogen peroxide. Keywords: Time course

2008-03-18 | GSE10876 | GEO

RpoE regulon in Rhodobacter sphaeroides

Project description:In Rhodobacter sphaeroides a transcriptional response to the reactive oxygen species singlet oxygen is controlled by the group IV sigma factor RpoE and the anti-sigma factor ChrR. In this study, we integrated various large datasets to identify genes within the singlet oxygen stress response that contain RpoE-dependent promoters within R. sphaeroides. Transcript pattern clustering and a RpoE-binding sequence model were used to predict candidate promoters that respond to singlet oxygen stress in R. sphaeroides. These candidate promoters were experimentally validated to nine R. sphaeroides RpoE-dependent promoters that control the transcription of 15 genes activated by singlet oxygen.

2010-07-01 | GSE22576 | GEO

Expression data from mouse limb tendon cells during development.

Project description:We have undertaken a screen of mouse limb tendon cells in order to identify molecular pathways involved in tendon development. Mouse limb tendon cells were isolated based on Scleraxis (Scx) expression at different stages of development: E11.5, E12.5 and E14.5 Microarray comparisons were carried out between tendon progenitor and differentiated stages. Forelimbs from E11.5, E12.5 and E14.5 Scx-GFP embryos were collected and dissociated with trypsin to obtain cell suspensions. Scx-positive tendon cells were isolated by FACS. RNA was extracted and Fragmented biotin-labelled cRNA samples were hybridized on Affymetrix Gene Chip Mouse Genome 430 2.0 arrays.

2014-01-18 | E-GEOD-54207 | biostudies-arrayexpress

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data