登録情報 データベース : EMDB / ID : EMD-41377 ダウンロードとリンクタイトル Human proteasome alpha ring assembly intermediate マップデータ 詳細 試料複合体 : proteasome alpha ring assembly intermediate 詳細 キーワード proteasome / proteasome assembly / PAC3 / PAC4 / HYDROLASE機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
cerebellar granule cell precursor proliferation / purine ribonucleoside triphosphate binding / protein folding chaperone complex / Regulation of ornithine decarboxylase (ODC) / Proteasome assembly / Cross-presentation of soluble exogenous antigens (endosomes) / proteasome core complex / proteasome core complex assembly / Somitogenesis / mitotic spindle assembly checkpoint signaling ... cerebellar granule cell precursor proliferation / purine ribonucleoside triphosphate binding / protein folding chaperone complex / Regulation of ornithine decarboxylase (ODC) / Proteasome assembly / Cross-presentation of soluble exogenous antigens (endosomes) / proteasome core complex / proteasome core complex assembly / Somitogenesis / mitotic spindle assembly checkpoint signaling / proteasome binding / myofibril / immune system process / NF-kappaB binding / proteasome assembly / chaperone-mediated protein complex assembly / proteasome core complex, alpha-subunit complex / proteasome complex / proteolysis involved in protein catabolic process / sarcomere / Regulation of activated PAK-2p34 by proteasome mediated degradation / Autodegradation of Cdh1 by Cdh1:APC/C / APC/C:Cdc20 mediated degradation of Securin / Asymmetric localization of PCP proteins / Ubiquitin-dependent degradation of Cyclin D / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / TNFR2 non-canonical NF-kB pathway / AUF1 (hnRNP D0) binds and destabilizes mRNA / Vpu mediated degradation of CD4 / Assembly of the pre-replicative complex / Ubiquitin Mediated Degradation of Phosphorylated Cdc25A / Degradation of DVL / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / Dectin-1 mediated noncanonical NF-kB signaling / lipopolysaccharide binding / Degradation of AXIN / Hh mutants are degraded by ERAD / negative regulation of inflammatory response to antigenic stimulus / P-body / Activation of NF-kappaB in B cells / Degradation of GLI1 by the proteasome / Hedgehog ligand biogenesis / G2/M Checkpoints / Defective CFTR causes cystic fibrosis / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Autodegradation of the E3 ubiquitin ligase COP1 / Negative regulation of NOTCH4 signaling / Vif-mediated degradation of APOBEC3G / Regulation of RUNX3 expression and activity / Hedgehog 'on' state / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1 / MAPK6/MAPK4 signaling / Degradation of beta-catenin by the destruction complex / response to virus / Oxygen-dependent proline hydroxylation of Hypoxia-inducible Factor Alpha / ABC-family proteins mediated transport / CDK-mediated phosphorylation and removal of Cdc6 / CLEC7A (Dectin-1) signaling / SCF(Skp2)-mediated degradation of p27/p21 / Regulation of expression of SLITs and ROBOs / FCERI mediated NF-kB activation / nuclear matrix / Regulation of PTEN stability and activity / Interleukin-1 signaling / Orc1 removal from chromatin / Regulation of RAS by GAPs / positive regulation of NF-kappaB transcription factor activity / Regulation of RUNX2 expression and activity / Separation of Sister Chromatids / The role of GTSE1 in G2/M progression after G2 checkpoint / UCH proteinases / KEAP1-NFE2L2 pathway / Antigen processing: Ubiquitination & Proteasome degradation / Downstream TCR signaling / RUNX1 regulates transcription of genes involved in differentiation of HSCs / Neddylation / ER-Phagosome pathway / regulation of inflammatory response / secretory granule lumen / endopeptidase activity / molecular adaptor activity / proteasome-mediated ubiquitin-dependent protein catabolic process / ficolin-1-rich granule lumen / Ub-specific processing proteases / cilium / ribosome / intracellular membrane-bounded organelle / centrosome / ubiquitin protein ligase binding / Neutrophil degranulation / protein-containing complex binding / negative regulation of apoptotic process / endoplasmic reticulum / Golgi apparatus / protein-containing complex / mitochondrion 類似検索 - 分子機能 Proteasome assembly chaperone 4 / Proteasome assembly chaperone 4 / Proteasome assembly chaperone 3 / Proteasome assembly chaperone 3 / : / Proteasome assembly chaperone 1 / Proteasome assembly chaperone 4 / Proteasome assembly chaperone 2, eukaryotic / Proteasome assembly chaperone 2 / Proteasome assembly chaperone 2 superfamily ... Proteasome assembly chaperone 4 / Proteasome assembly chaperone 4 / Proteasome assembly chaperone 3 / Proteasome assembly chaperone 3 / : / Proteasome assembly chaperone 1 / Proteasome assembly chaperone 4 / Proteasome assembly chaperone 2, eukaryotic / Proteasome assembly chaperone 2 / Proteasome assembly chaperone 2 superfamily / PAC2 family / Proteasome subunit alpha 1 / Proteasome subunit alpha6 / Proteasome subunit alpha5 / Proteasome beta-type subunit, conserved site / Proteasome subunit A N-terminal signature / Proteasome alpha-type subunits signature. / Proteasome alpha-subunit, N-terminal domain / Proteasome subunit A N-terminal signature Add an annotation / : / Proteasome alpha-type subunit / Proteasome alpha-type subunit profile. / Proteasome subunit / Proteasome, subunit alpha/beta / Nucleophile aminohydrolases, N-terminal 類似検索 - ドメイン・相同性 Proteasome subunit alpha type-7 / Proteasome assembly chaperone 1 / Proteasome subunit alpha type-1 / Proteasome subunit alpha type-2 / Proteasome subunit alpha type-3 / Proteasome subunit alpha type-4 / Proteasome subunit alpha type-5 / Proteasome subunit alpha type-6 / Proteasome assembly chaperone 4 / Proteasome assembly chaperone 2 / Proteasome assembly chaperone 3 類似検索 - 構成要素生物種 Homo sapiens (ヒト)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.0 Å 詳細 データ登録者Zhang H / Zhao J 資金援助 米国, 3件 詳細 詳細を隠すOrganization Grant number 国 National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) GM147487 米国 National Institutes of Health/Office of the Director OD026926 米国 National Institutes of Health/National Cancer Institute (NIH/NCI) CA030199 米国
引用ジャーナル : Nat Commun / 年 : 2024タイトル : Structural basis of human 20S proteasome biogenesis.著者 : Hanxiao Zhang / Chenyu Zhou / Zarith Mohammad / Jianhua Zhao / 要旨 : New proteasomes are produced to accommodate increases in cellular catabolic demand and prevent the accumulation of cytotoxic proteins. Formation of the proteasomal 20S core complex relies on the ... New proteasomes are produced to accommodate increases in cellular catabolic demand and prevent the accumulation of cytotoxic proteins. Formation of the proteasomal 20S core complex relies on the function of the five chaperones PAC1-4 and POMP. Here, to understand how these chaperones facilitate proteasome assembly, we tagged the endogenous chaperones using CRISPR/Cas gene editing and examined the chaperone-bound complexes by cryo-EM. We observe an early α-ring intermediate subcomplex that is stabilized by PAC1-4, which transitions to β-ring assembly upon dissociation of PAC3/PAC4 and rearrangement of the PAC1 N-terminal tail. Completion of the β-ring and dimerization of half-proteasomes repositions critical lysine K33 to trigger cleavage of the β pro-peptides, leading to the concerted dissociation of POMP and PAC1/PAC2 to yield mature 20S proteasomes. This study reveals structural insights into critical points along the assembly pathway of the human proteasome and provides a molecular blueprint for 20S biogenesis. 履歴 登録 2023年7月28日 - ヘッダ(付随情報) 公開 2024年10月23日 - マップ公開 2024年10月23日 - 更新 2025年5月14日 - 現状 2025年5月14日 処理サイト : RCSB / 状態 : 公開
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