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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 7nap | ||||||||||||
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タイトル | Human PA28-20S-PA28 proteasome complex | ||||||||||||
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![]() | HYDROLASE / proteasome / 20S / PA28 | ||||||||||||
機能・相同性 | ![]() proteasome activator complex / antigen processing and presentation of exogenous antigen / purine ribonucleoside triphosphate binding / Regulation of ornithine decarboxylase (ODC) / Proteasome assembly / Cross-presentation of soluble exogenous antigens (endosomes) / proteasome core complex / Somitogenesis / myofibril / regulation of G1/S transition of mitotic cell cycle ...proteasome activator complex / antigen processing and presentation of exogenous antigen / purine ribonucleoside triphosphate binding / Regulation of ornithine decarboxylase (ODC) / Proteasome assembly / Cross-presentation of soluble exogenous antigens (endosomes) / proteasome core complex / Somitogenesis / myofibril / regulation of G1/S transition of mitotic cell cycle / immune system process / NF-kappaB binding / proteasome endopeptidase complex / endopeptidase activator activity / proteasome core complex, beta-subunit complex / proteasome assembly / threonine-type endopeptidase activity / proteasome core complex, alpha-subunit complex / regulation of proteasomal protein catabolic process / Gene and protein expression by JAK-STAT signaling after Interleukin-12 stimulation / 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 / negative regulation of inflammatory response to antigenic stimulus / Degradation of AXIN / Hh mutants are degraded by ERAD / Activation of NF-kappaB in B cells / P-body / 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 / 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 / response to virus / SCF(Skp2)-mediated degradation of p27/p21 / FCERI mediated NF-kB activation / Regulation of expression of SLITs and ROBOs / nuclear matrix / Regulation of PTEN stability and activity / Interleukin-1 signaling / Orc1 removal from chromatin / Regulation of RAS by GAPs / Regulation of RUNX2 expression and activity / The role of GTSE1 in G2/M progression after G2 checkpoint / Separation of Sister Chromatids / UCH proteinases / KEAP1-NFE2L2 pathway / Antigen processing: Ubiquitination & Proteasome degradation / Downstream TCR signaling / peptidase activity / RUNX1 regulates transcription of genes involved in differentiation of HSCs / Neddylation / ER-Phagosome pathway / regulation of inflammatory response / secretory granule lumen / endopeptidase activity / proteasome-mediated ubiquitin-dependent protein catabolic process / response to oxidative stress / ficolin-1-rich granule lumen / positive regulation of canonical NF-kappaB signal transduction / Ub-specific processing proteases / nuclear body / ciliary basal body / cilium / ribosome / cadherin binding / intracellular membrane-bounded organelle / centrosome / ubiquitin protein ligase binding 類似検索 - 分子機能 | ||||||||||||
生物種 | ![]() | ||||||||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.2 Å | ||||||||||||
![]() | Zhao, J. / Makhija, S. / Huang, B. / Cheng, Y. | ||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural insights into the human PA28-20S proteasome enabled by efficient tagging and purification of endogenous proteins. 著者: Jianhua Zhao / Suraj Makhija / Chenyu Zhou / Hanxiao Zhang / YongQiang Wang / Monita Muralidharan / Bo Huang / Yifan Cheng / ![]() 要旨: The ability to produce folded and functional proteins is a necessity for structural biology and many other biological sciences. This task is particularly challenging for numerous biomedically ...The ability to produce folded and functional proteins is a necessity for structural biology and many other biological sciences. This task is particularly challenging for numerous biomedically important targets in human cells, including membrane proteins and large macromolecular assemblies, hampering mechanistic studies and drug development efforts. Here we describe a method combining CRISPR-Cas gene editing and fluorescence-activated cell sorting to rapidly tag and purify endogenous proteins in HEK cells for structural characterization. We applied this approach to study the human proteasome from HEK cells and rapidly determined cryogenic electron microscopy structures of major proteasomal complexes, including a high-resolution structure of intact human PA28αβ-20S. Our structures reveal that PA28 with a subunit stoichiometry of 3α/4β engages tightly with the 20S proteasome. Addition of a hydrophilic peptide shows that polypeptides entering through PA28 are held in the antechamber of 20S prior to degradation in the proteolytic chamber. This study provides critical insights into an important proteasome complex and demonstrates key methodologies for the tagging of proteins from endogenous sources. | ||||||||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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ダウンロード
PDBx/mmCIF形式 | ![]() | 1.5 MB | 表示 | ![]() |
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PDB形式 | ![]() | 1.2 MB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1 MB | 表示 | |
XML形式データ | ![]() | 195.9 KB | 表示 | |
CIF形式データ | ![]() | 321.8 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 24277MC ![]() 7nanC ![]() 7naoC ![]() 7naqC ![]() 8cvrC ![]() 8cvsC ![]() 8cvtC ![]() 8cxbC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
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集合体
登録構造単位 | ![]()
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要素
-Proteasome subunit alpha type- ... , 7種, 14分子 OAPBQCRDSETFUG
#1: タンパク質 | 分子量: 25927.535 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) ![]() #2: タンパク質 | 分子量: 29525.842 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) ![]() #3: タンパク質 | 分子量: 27929.891 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) ![]() #4: タンパク質 | 分子量: 26435.977 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) ![]() #5: タンパク質 | 分子量: 29595.627 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) ![]() #6: タンパク質 | 分子量: 28469.252 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) ![]() #7: タンパク質 | 分子量: 27432.459 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) ![]() |
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-Proteasome subunit beta type- ... , 7種, 14分子 VHWIXJYKZLaMbN
#8: タンパク質 | 分子量: 30000.418 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) ![]() #9: タンパク質 | 分子量: 22972.896 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) ![]() #10: タンパク質 | 分子量: 22864.277 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) ![]() #11: タンパク質 | 分子量: 28510.248 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) ![]() #12: タンパク質 | 分子量: 26522.396 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) ![]() #13: タンパク質 | 分子量: 29231.178 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) ![]() #14: タンパク質 | 分子量: 25377.652 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) ![]() |
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-Proteasome activator complex subunit ... , 2種, 14分子 kmopdfhijlnceg
#15: タンパク質 | 分子量: 27439.633 Da / 分子数: 8 / 由来タイプ: 天然 / 由来: (天然) ![]() #16: タンパク質 | 分子量: 28768.141 Da / 分子数: 6 / 由来タイプ: 天然 / 由来: (天然) ![]() |
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-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
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試料調製
構成要素 | 名称: PA28-20S-PA28 proteasome complex / タイプ: COMPLEX / Entity ID: all / 由来: NATURAL |
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由来(天然) | 生物種: ![]() |
緩衝液 | pH: 7.2 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Tecnai Polara / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI POLARA 300 |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD |
撮影 | 電子線照射量: 40 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
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解析
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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対称性 | 点対称性: C1 (非対称) |
3次元再構成 | 解像度: 3.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 22946 / 対称性のタイプ: POINT |