- EMDB-53399: Cryo-EM reconstruction of the NEDD1 anchor protein and CDK5RAP2 b... -
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Entry
Database: EMDB / ID: EMD-53399
Title
Cryo-EM reconstruction of the NEDD1 anchor protein and CDK5RAP2 bound to the gamma-tubulin ring complex
Map data
Sample
Complex: Cryo-EM reconstruction of the NEDD1 and CDK5RAP2 bound to the gamma-tubulin ring complex
Protein or peptide: x 11 types
Keywords
Tubulin complex / STRUCTURAL PROTEIN
Function / homology
Function and homology information
microtubule nucleation by interphase microtubule organizing center / gamma-tubulin complex localization / microtubule nucleator activity / positive regulation of norepinephrine uptake / Regulation of CDH1 Function / Formation of the polybromo-BAF (pBAF) complex / Formation of the non-canonical BAF (ncBAF) complex / Formation of the canonical BAF (cBAF) complex / Formation of the embryonic stem cell BAF (esBAF) complex / Formation of neuronal progenitor and neuronal BAF (npBAF and nBAF) ...microtubule nucleation by interphase microtubule organizing center / gamma-tubulin complex localization / microtubule nucleator activity / positive regulation of norepinephrine uptake / Regulation of CDH1 Function / Formation of the polybromo-BAF (pBAF) complex / Formation of the non-canonical BAF (ncBAF) complex / Formation of the canonical BAF (cBAF) complex / Formation of the embryonic stem cell BAF (esBAF) complex / Formation of neuronal progenitor and neuronal BAF (npBAF and nBAF) / polar microtubule / interphase microtubule organizing center / gamma-tubulin complex / gamma-tubulin ring complex / mitotic spindle microtubule / bBAF complex / cellular response to cytochalasin B / meiotic spindle organization / npBAF complex / nBAF complex / brahma complex / regulation of transepithelial transport / morphogenesis of a polarized epithelium / Formation of annular gap junctions / Formation of the dystrophin-glycoprotein complex (DGC) / structural constituent of postsynaptic actin cytoskeleton / microtubule nucleation / GBAF complex / Gap junction degradation / Folding of actin by CCT/TriC / regulation of G0 to G1 transition / Cell-extracellular matrix interactions / protein localization to adherens junction / dense body / Tat protein binding / postsynaptic actin cytoskeleton / gamma-tubulin binding / Prefoldin mediated transfer of substrate to CCT/TriC / RSC-type complex / regulation of double-strand break repair / regulation of nucleotide-excision repair / non-motile cilium / Adherens junctions interactions / RHOF GTPase cycle / adherens junction assembly / apical protein localization / Sensory processing of sound by inner hair cells of the cochlea / Sensory processing of sound by outer hair cells of the cochlea / Interaction between L1 and Ankyrins / tight junction / SWI/SNF complex / regulation of mitotic metaphase/anaphase transition / positive regulation of T cell differentiation / apical junction complex / positive regulation of double-strand break repair / maintenance of blood-brain barrier / regulation of norepinephrine uptake / nitric-oxide synthase binding / transporter regulator activity / pericentriolar material / cortical cytoskeleton / positive regulation of stem cell population maintenance / establishment or maintenance of cell polarity / NuA4 histone acetyltransferase complex / cell leading edge / Recycling pathway of L1 / Regulation of MITF-M-dependent genes involved in pigmentation / microtubule organizing center / mitotic sister chromatid segregation / brush border / regulation of G1/S transition of mitotic cell cycle / EPH-ephrin mediated repulsion of cells / negative regulation of cell differentiation / mitotic spindle assembly / kinesin binding / RHO GTPases Activate WASPs and WAVEs / regulation of synaptic vesicle endocytosis / positive regulation of myoblast differentiation / single fertilization / RHO GTPases activate IQGAPs / regulation of protein localization to plasma membrane / positive regulation of double-strand break repair via homologous recombination / cytoplasmic microtubule / spindle assembly / cytoplasmic microtubule organization / EPHB-mediated forward signaling / cytoskeleton organization / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / Recruitment of mitotic centrosome proteins and complexes / centriole / Recruitment of NuMA to mitotic centrosomes / substantia nigra development / Anchoring of the basal body to the plasma membrane / axonogenesis / sperm principal piece / AURKA Activation by TPX2 / calyx of Held / nitric-oxide synthase regulator activity / condensed nuclear chromosome Similarity search - Function
Journal: bioRxiv / Year: 2024 Title: Structure of the microtubule anchoring factor NEDD1 bound to the γ-tubulin ring complex. Authors: Hugo Muñoz-Hernández / Yixin Xu / Daniel Zhang / Allen Xue / Amol Aher / Aitor Pellicer Camardiel / Ellie Walker / Florina Marxer / Tarun M Kapoor / Michal Wieczorek / Abstract: The γ-tubulin ring complex (γ-TuRC) is an essential multiprotein assembly, in which γ-tubulin, GCP2-6, actin, MZT1 and MZT2 form an asymmetric cone-shaped structure that provides a template for ...The γ-tubulin ring complex (γ-TuRC) is an essential multiprotein assembly, in which γ-tubulin, GCP2-6, actin, MZT1 and MZT2 form an asymmetric cone-shaped structure that provides a template for microtubule nucleation. The γ-TuRC is recruited to microtubule organizing centers (MTOCs), such as centrosomes and pre-existing mitotic spindle microtubules, via the evolutionarily-conserved attachment factor NEDD1. NEDD1 contains an N-terminal WD40 domain that binds to microtubules, and a C-terminal domain that associates with the γ-TuRC. However, the structural basis of the NEDD1-γ-TuRC interaction is not known. Here, we report cryo-electron microscopy (cryo-EM) structures of NEDD1 bound to the human γ-TuRC in the absence or presence of the activating factor CDK5RAP2, which interacts with GCP2 to induce conformational changes in the γ-TuRC and promote its microtubule nucleating function. We found that the C-terminus of NEDD1 forms a tetrameric α-helical assembly that contacts the lumen of the γ-TuRC cone, is anchored to GCP4, 5 and 6 via protein modules consisting of MZT1 & GCP3 subcomplexes, and orients its microtubule-binding WD40 domains away from the complex. We biochemically tested our structural models by identifying NEDD1 mutants unable to pull-down -tubulin from cultured cells. The structure of the γ-TuRC simultaneously bound to NEDD1 and CDK5RAP2 reveals that both factors can associate with the "open" conformation of the complex. Our results show that NEDD1 does not induce conformational changes in the γ-TuRC, but suggest that anchoring of γ-TuRC-capped microtubules by NEDD1 would be structurally compatible with the significant conformational changes experienced by the γ-TuRC during microtubule nucleation.
Entire : Cryo-EM reconstruction of the NEDD1 and CDK5RAP2 bound to the gam...
Entire
Name: Cryo-EM reconstruction of the NEDD1 and CDK5RAP2 bound to the gamma-tubulin ring complex
Components
Complex: Cryo-EM reconstruction of the NEDD1 and CDK5RAP2 bound to the gamma-tubulin ring complex
Protein or peptide: Gamma-tubulin complex component 3
Protein or peptide: Mitotic-spindle organizing protein 1
Protein or peptide: Protein NEDD1
Protein or peptide: Actin, cytoplasmic 1, N-terminally processed
Protein or peptide: Tubulin gamma-1 chain
Protein or peptide: Gamma-tubulin complex component 4
Protein or peptide: Isoform 3 of Gamma-tubulin complex component 2
Protein or peptide: TUBGCP6 protein
Protein or peptide: Gamma-tubulin complex component 5
Protein or peptide: Mitotic-spindle organizing protein 2B
Protein or peptide: CDK5 regulatory subunit-associated protein 2
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Supramolecule #1: Cryo-EM reconstruction of the NEDD1 and CDK5RAP2 bound to the gam...
Supramolecule
Name: Cryo-EM reconstruction of the NEDD1 and CDK5RAP2 bound to the gamma-tubulin ring complex type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
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