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- EMDB-35229: In situ structure of axonemal doublet microtubules in mouse sperm... -
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Open data
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Basic information
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Title | In situ structure of axonemal doublet microtubules in mouse sperm with 16-nm repeat | |||||||||
![]() | Axonemal doublet microtubules in mouse sperm with 16-nm repeat | |||||||||
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![]() | microtubules / axoneme / sperm / filament / STRUCTURAL PROTEIN | |||||||||
Function / homology | ![]() male germ-line stem cell population maintenance / 9+0 motile cilium / outer acrosomal membrane / regulation of brood size / establishment of left/right asymmetry / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Cilium Assembly / Sealing of the nuclear envelope (NE) by ESCRT-III / axonemal B tubule inner sheath / axonemal A tubule inner sheath ...male germ-line stem cell population maintenance / 9+0 motile cilium / outer acrosomal membrane / regulation of brood size / establishment of left/right asymmetry / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Cilium Assembly / Sealing of the nuclear envelope (NE) by ESCRT-III / axonemal B tubule inner sheath / axonemal A tubule inner sheath / inner dynein arm assembly / Intraflagellar transport / Carboxyterminal post-translational modifications of tubulin / protein polyglutamylation / positive regulation of feeding behavior / COPI-independent Golgi-to-ER retrograde traffic / cilium-dependent cell motility / sperm principal piece / MAP kinase tyrosine/serine/threonine phosphatase activity / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / regulation of cilium beat frequency involved in ciliary motility / cilium movement involved in cell motility / 9+2 motile cilium / PKR-mediated signaling / COPI-mediated anterograde transport / protein localization to organelle / Aggrephagy / acrosomal membrane / Kinesins / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / Resolution of Sister Chromatid Cohesion / RHO GTPases activate IQGAPs / The role of GTSE1 in G2/M progression after G2 checkpoint / Recycling pathway of L1 / axoneme assembly / axonemal microtubule / cilium organization / COPI-dependent Golgi-to-ER retrograde traffic / flagellated sperm motility / RHO GTPases Activate Formins / Separation of Sister Chromatids / Hedgehog 'off' state / Loss of Nlp from mitotic centrosomes / Recruitment of mitotic centrosome proteins and complexes / Loss of proteins required for interphase microtubule organization from the centrosome / Recruitment of NuMA to mitotic centrosomes / Anchoring of the basal body to the plasma membrane / AURKA Activation by TPX2 / Regulation of PLK1 Activity at G2/M Transition / manchette / MHC class II antigen presentation / protein targeting to mitochondrion / motile cilium / positive regulation of cell motility / protein targeting to membrane / microtubule organizing center / regulation of neuron projection development / ciliary base / tubulin complex / myosin phosphatase activity / extrinsic component of membrane / intercellular bridge / protein-serine/threonine phosphatase / beta-tubulin binding / regulation of cell division / phosphatase activity / cytoplasmic microtubule / axoneme / microtubule-based process / spermatid development / mitotic cytokinesis / alpha-tubulin binding / cilium assembly / sperm flagellum / cellular response to unfolded protein / dephosphorylation / sperm midpiece / Hsp70 protein binding / centriole / Neutrophil degranulation / protein-tyrosine-phosphatase / mitotic spindle organization / acrosomal vesicle / ciliary basal body / protein tyrosine phosphatase activity / cellular response to leukemia inhibitory factor / G protein-coupled receptor binding / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / Hsp90 protein binding / protein localization / mitochondrial intermembrane space / structural constituent of cytoskeleton / mitotic spindle / cilium / spindle pole / SH3 domain binding / microtubule cytoskeleton organization / intracellular calcium ion homeostasis / calcium-dependent protein binding Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | subtomogram averaging / cryo EM / Resolution: 4.5 Å | |||||||||
![]() | Zhu Y / Yin GL / Tai LH / Sun F | |||||||||
Funding support | ![]()
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![]() | ![]() Title: In-cell structural insight into the stability of sperm microtubule doublet. Authors: Linhua Tai / Guoliang Yin / Xiaojun Huang / Fei Sun / Yun Zhu / ![]() Abstract: The propulsion for mammalian sperm swimming is generated by flagella beating. Microtubule doublets (DMTs) along with microtubule inner proteins (MIPs) are essential structural blocks of flagella. ...The propulsion for mammalian sperm swimming is generated by flagella beating. Microtubule doublets (DMTs) along with microtubule inner proteins (MIPs) are essential structural blocks of flagella. However, the intricate molecular architecture of intact sperm DMT remains elusive. Here, by in situ cryo-electron tomography, we solved the in-cell structure of mouse sperm DMT at 4.5-7.5 Å resolutions, and built its model with 36 kinds of MIPs in 48 nm periodicity. We identified multiple copies of Tektin5 that reinforce Tektin bundle, and multiple MIPs with different periodicities that anchor the Tektin bundle to tubulin wall. This architecture contributes to a superior stability of A-tubule than B-tubule of DMT, which was revealed by structural comparison of DMTs from the intact and deformed axonemes. Our work provides an overall molecular picture of intact sperm DMT in 48 nm periodicity that is essential to understand the molecular mechanism of sperm motility as well as the related ciliopathies. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 116.2 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 38.9 KB 38.9 KB | Display Display | ![]() |
Images | ![]() | 190.2 KB | ||
Filedesc metadata | ![]() | 12.5 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 785.2 KB | Display | ![]() |
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Full document | ![]() | 784.7 KB | Display | |
Data in XML | ![]() | 6.5 KB | Display | |
Data in CIF | ![]() | 7.5 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8i7oMC ![]() 8i7rC C: citing same article ( M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | Axonemal doublet microtubules in mouse sperm with 16-nm repeat | ||||||||||||||||||||
Voxel size | X=Y=Z: 1.76 Å | ||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
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Sample components
+Entire : mouse sperm
+Supramolecule #1: mouse sperm
+Macromolecule #1: Tektin-1
+Macromolecule #2: Detyrosinated tubulin alpha-3 chain
+Macromolecule #3: Tubulin beta-4B chain
+Macromolecule #4: Tektin-2
+Macromolecule #5: Tektin-3
+Macromolecule #6: Tektin-4
+Macromolecule #7: Tektin bundle-interacting protein 1
+Macromolecule #8: Tektin-5
+Macromolecule #9: EF-hand domain-containing protein 1
+Macromolecule #10: EF-hand domain-containing family member C2
+Macromolecule #11: Protein FAM166A
+Macromolecule #12: Protein FAM166C
+Macromolecule #13: Dual specificity phosphatase 21
+Macromolecule #14: Coiled-coil domain-containing protein 105
+Macromolecule #15: Enkurin
+Macromolecule #16: Testis-expressed protein 43
+Macromolecule #17: Cilia- and flagella-associated protein 276
+Macromolecule #18: Protein Flattop
+Macromolecule #19: Cilia- and flagella-associated protein 52
+Macromolecule #20: EF-hand calcium-binding domain-containing protein 6
+Macromolecule #21: Cilia and flagella-associated protein 77
+Macromolecule #22: Cilia- and flagella-associated protein 20
+Macromolecule #23: Parkin coregulated gene protein homolog
+Macromolecule #24: Sperm acrosome-associated protein 9
+Macromolecule #25: GUANOSINE-5'-TRIPHOSPHATE
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | subtomogram averaging |
Aggregation state | cell |
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Sample preparation
Buffer | pH: 7 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 QUANTUM (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 3.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 5.0 µm / Nominal defocus min: 1.0 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Final reconstruction | Applied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 4.5 Å / Resolution method: FSC 0.143 CUT-OFF / Number subtomograms used: 37018 |
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Extraction | Number tomograms: 689 / Number images used: 37018 |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |