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基本情報
登録情報 | データベース: PDB / ID: 4jpo | ||||||
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タイトル | 5A resolution structure of Proteasome Assembly Chaperone Hsm3 in complex with a C-terminal fragment of Rpt1 | ||||||
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![]() | CHAPERONE/HYDROLASE / Hsm3 / Chaperone / Proteasome / Protein Complex / CHAPERONE-HYDROLASE complex | ||||||
機能・相同性 | ![]() proteasome regulatory particle assembly / proteasome-activating activity / proteasome regulatory particle, base subcomplex / Proteasome assembly / Cross-presentation of soluble exogenous antigens (endosomes) / TNFR2 non-canonical NF-kB pathway / Ubiquitin Mediated Degradation of Phosphorylated Cdc25A / Regulation of PTEN stability and activity / CDK-mediated phosphorylation and removal of Cdc6 / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis ...proteasome regulatory particle assembly / proteasome-activating activity / proteasome regulatory particle, base subcomplex / Proteasome assembly / Cross-presentation of soluble exogenous antigens (endosomes) / TNFR2 non-canonical NF-kB pathway / Ubiquitin Mediated Degradation of Phosphorylated Cdc25A / Regulation of PTEN stability and activity / CDK-mediated phosphorylation and removal of Cdc6 / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / KEAP1-NFE2L2 pathway / Neddylation / Orc1 removal from chromatin / MAPK6/MAPK4 signaling / Antigen processing: Ubiquitination & Proteasome degradation / positive regulation of RNA polymerase II transcription preinitiation complex assembly / Ub-specific processing proteases / mismatch repair / Neutrophil degranulation / protein folding chaperone / proteasome complex / positive regulation of protein catabolic process / ubiquitin-dependent protein catabolic process / proteasome-mediated ubiquitin-dependent protein catabolic process / ubiquitin protein ligase binding / ATP hydrolysis activity / ATP binding / nucleus / cytosol / cytoplasm 類似検索 - 分子機能 | ||||||
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手法 | ![]() ![]() ![]() | ||||||
![]() | Lovell, S. / Battaile, K.P. / Singh, R. / Roelofs, J. | ||||||
![]() | ![]() タイトル: Reconfiguration of the proteasome during chaperone-mediated assembly. 著者: Soyeon Park / Xueming Li / Ho Min Kim / Chingakham Ranjit Singh / Geng Tian / Martin A Hoyt / Scott Lovell / Kevin P Battaile / Michal Zolkiewski / Philip Coffino / Jeroen Roelofs / Yifan Cheng / Daniel Finley / ![]() 要旨: The proteasomal ATPase ring, comprising Rpt1-Rpt6, associates with the heptameric α-ring of the proteasome core particle (CP) in the mature proteasome, with the Rpt carboxy-terminal tails inserting ...The proteasomal ATPase ring, comprising Rpt1-Rpt6, associates with the heptameric α-ring of the proteasome core particle (CP) in the mature proteasome, with the Rpt carboxy-terminal tails inserting into pockets of the α-ring. Rpt ring assembly is mediated by four chaperones, each binding a distinct Rpt subunit. Here we report that the base subassembly of the Saccharomyces cerevisiae proteasome, which includes the Rpt ring, forms a high-affinity complex with the CP. This complex is subject to active dissociation by the chaperones Hsm3, Nas6 and Rpn14. Chaperone-mediated dissociation was abrogated by a non-hydrolysable ATP analogue, indicating that chaperone action is coupled to nucleotide hydrolysis by the Rpt ring. Unexpectedly, synthetic Rpt tail peptides bound α-pockets with poor specificity, except for Rpt6, which uniquely bound the α2/α3-pocket. Although the Rpt6 tail is not visualized within an α-pocket in mature proteasomes, it inserts into the α2/α3-pocket in the base-CP complex and is important for complex formation. Thus, the Rpt-CP interface is reconfigured when the lid complex joins the nascent proteasome to form the mature holoenzyme. | ||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 191.4 KB | 表示 | ![]() |
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PDB形式 | ![]() | 147.8 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
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リンク
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集合体
登録構造単位 | ![]()
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単位格子 |
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要素
#1: タンパク質 | 分子量: 56685.719 Da / 分子数: 2 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 株: ATCC 204508 / S288c / 遺伝子: HSM3, YBR272C, YBR1740 / プラスミド: pJR89 / 発現宿主: ![]() ![]() #2: タンパク質 | 分子量: 11637.442 Da / 分子数: 2 / Fragment: C-terminal fragment, UNP residues 379-467 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 株: ATCC 204508 / S288c / 遺伝子: RPT1, CIM5, YTA3, YKL145W / プラスミド: pJR89 / 発現宿主: ![]() ![]() |
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-実験情報
-実験
実験 | 手法: ![]() |
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試料調製
結晶化 | 温度: 293 K / 手法: 蒸気拡散法 / pH: 7 詳細: 3M Sodium Formate, 100 mM Bis-Tris, 10mM Calcium Chloride, pH 7.0, vapor diffusion, temperature 293K |
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-データ収集
回折 | 平均測定温度: 100 K |
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放射光源 | 由来: ![]() ![]() ![]() |
検出器 | タイプ: DECTRIS PILATUS 6M / 検出器: PIXEL / 日付: 2011年1月1日 |
放射 | プロトコル: SINGLE WAVELENGTH / 散乱光タイプ: x-ray |
放射波長 | 波長: 1 Å / 相対比: 1 |
反射 | 解像度: 5→160.474 Å / Num. all: 16422 / Num. obs: 16422 / % possible obs: 99.9 % / Observed criterion σ(F): 0 / Observed criterion σ(I): -3 / 冗長度: 19.3 % / Rmerge(I) obs: 0.083 / Net I/σ(I): 20.1 |
反射 シェル | 解像度: 5→5.59 Å / 冗長度: 19.2 % / Rmerge(I) obs: 0.971 / Mean I/σ(I) obs: 3.6 / Num. unique all: 4550 / % possible all: 100 |
-位相決定
位相決定 | 手法: ![]() |
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解析
ソフトウェア |
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精密化 | 構造決定の手法: ![]() 開始モデル: PDB ENTRY 4FP7 解像度: 5→46.87 Å / Cor.coef. Fo:Fc: 0.9254 / Cor.coef. Fo:Fc free: 0.9109 / Occupancy max: 1 / Occupancy min: 1 / 交差検証法: THROUGHOUT / σ(F): 0 / 立体化学のターゲット値: Engh & Huber 詳細: B-factors were set to the value determined from the Wilson plot for refinement.
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原子変位パラメータ | Biso max: 273 Å2 / Biso mean: 273 Å2 / Biso min: 273 Å2
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Refine analyze | Luzzati coordinate error obs: 2.055 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
精密化ステップ | サイクル: LAST / 解像度: 5→46.87 Å
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拘束条件 |
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LS精密化 シェル | 解像度: 5→5.34 Å / Total num. of bins used: 8
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