- EMDB-10536: SUMOylated apoAPC/C with repositioned APC2 WHB domain -
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Basic information
Entry
Database: EMDB / ID: EMD-10536
Title
SUMOylated apoAPC/C with repositioned APC2 WHB domain
Map data
Sample
Complex: SUMOylated apoAPC/C with repositioned APC2 WHB domain
Complex: Body 2 with repositioned APC2 WHB domain after multi body refinement
Protein or peptide: x 14 types
Complex: Unidentified peptide
Protein or peptide: x 1 types
Ligand: x 1 types
Function / homology
Function and homology information
Conversion from APC/C:Cdc20 to APC/C:Cdh1 in late anaphase / regulation of mitotic cell cycle spindle assembly checkpoint / positive regulation of synapse maturation / Inactivation of APC/C via direct inhibition of the APC/C complex / APC/C:Cdc20 mediated degradation of mitotic proteins / anaphase-promoting complex / Aberrant regulation of mitotic exit in cancer due to RB1 defects / regulation of meiotic cell cycle / metaphase/anaphase transition of mitotic cell cycle / anaphase-promoting complex-dependent catabolic process ...Conversion from APC/C:Cdc20 to APC/C:Cdh1 in late anaphase / regulation of mitotic cell cycle spindle assembly checkpoint / positive regulation of synapse maturation / Inactivation of APC/C via direct inhibition of the APC/C complex / APC/C:Cdc20 mediated degradation of mitotic proteins / anaphase-promoting complex / Aberrant regulation of mitotic exit in cancer due to RB1 defects / regulation of meiotic cell cycle / metaphase/anaphase transition of mitotic cell cycle / anaphase-promoting complex-dependent catabolic process / positive regulation of synaptic plasticity / regulation of exit from mitosis / Phosphorylation of the APC/C / positive regulation of mitotic metaphase/anaphase transition / protein K11-linked ubiquitination / enzyme-substrate adaptor activity / regulation of mitotic metaphase/anaphase transition / positive regulation of dendrite morphogenesis / ubiquitin-ubiquitin ligase activity / mitotic metaphase chromosome alignment / Regulation of APC/C activators between G1/S and early anaphase / cullin family protein binding / Transcriptional Regulation by VENTX / positive regulation of axon extension / heterochromatin / regulation of mitotic cell cycle / APC/C:Cdc20 mediated degradation of Cyclin B / APC-Cdc20 mediated degradation of Nek2A / nuclear periphery / Autodegradation of Cdh1 by Cdh1:APC/C / APC/C:Cdc20 mediated degradation of Securin / Assembly of the pre-replicative complex / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1 / brain development / CDK-mediated phosphorylation and removal of Cdc6 / mitotic spindle / kinetochore / spindle / Separation of Sister Chromatids / ubiquitin-protein transferase activity / microtubule cytoskeleton / ubiquitin protein ligase activity / Antigen processing: Ubiquitination & Proteasome degradation / nervous system development / mitotic cell cycle / Senescence-Associated Secretory Phenotype (SASP) / ubiquitin-dependent protein catabolic process / protein phosphatase binding / molecular adaptor activity / cell differentiation / protein ubiquitination / cell cycle / cell division / negative regulation of gene expression / centrosome / ubiquitin protein ligase binding / nucleolus / zinc ion binding / nucleoplasm / nucleus / cytoplasm / cytosol Similarity search - Function
Journal: Cell Rep / Year: 2021 Title: Molecular mechanisms of APC/C release from spindle assembly checkpoint inhibition by APC/C SUMOylation. Authors: Stanislau Yatskevich / Jessie S Kroonen / Claudio Alfieri / Thomas Tischer / Anna C Howes / Linda Clijsters / Jing Yang / Ziguo Zhang / Kaige Yan / Alfred C O Vertegaal / David Barford / Abstract: The anaphase-promoting complex/cyclosome (APC/C) is an E3 ubiquitin ligase that controls cell cycle transitions. Its regulation by the spindle assembly checkpoint (SAC) is coordinated with the ...The anaphase-promoting complex/cyclosome (APC/C) is an E3 ubiquitin ligase that controls cell cycle transitions. Its regulation by the spindle assembly checkpoint (SAC) is coordinated with the attachment of sister chromatids to the mitotic spindle. APC/C SUMOylation on APC4 ensures timely anaphase onset and chromosome segregation. To understand the structural and functional consequences of APC/C SUMOylation, we reconstituted SUMOylated APC/C for electron cryo-microscopy and biochemical analyses. SUMOylation of the APC/C causes a substantial rearrangement of the WHB domain of APC/C's cullin subunit (APC2). Although APC/C SUMOylation results in a modest impact on normal APC/C activity, repositioning APC2 reduces the affinity of APC/C for the mitotic checkpoint complex (MCC), the effector of the SAC. This attenuates MCC-mediated suppression of APC/C activity, allowing for more efficient ubiquitination of APC/C substrates in the presence of the MCC. Thus, SUMOylation stimulates the reactivation of APC/C when the SAC is silenced, contributing to timely anaphase onset.
History
Deposition
Dec 10, 2019
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Header (metadata) release
Jan 13, 2021
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Map release
Jan 13, 2021
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Update
Jul 28, 2021
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Current status
Jul 28, 2021
Processing site: PDBe / Status: Released
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