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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: 6ob1 | |||||||||
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タイトル | Structure of WHB in complex with Ubiquitin Variant | |||||||||
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![]() | PROTEIN BINDING / Ubiquitin / WHB | |||||||||
機能・相同性 | ![]() positive regulation of synapse maturation / Conversion from APC/C:Cdc20 to APC/C:Cdh1 in late anaphase / 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 / protein branched polyubiquitination / metaphase/anaphase transition of mitotic cell cycle / regulation of meiotic cell cycle / anaphase-promoting complex-dependent catabolic process ...positive regulation of synapse maturation / Conversion from APC/C:Cdc20 to APC/C:Cdh1 in late anaphase / 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 / protein branched polyubiquitination / metaphase/anaphase transition of mitotic cell cycle / regulation of meiotic cell cycle / anaphase-promoting complex-dependent catabolic process / positive regulation of synaptic plasticity / Phosphorylation of the APC/C / positive regulation of dendrite morphogenesis / protein K11-linked ubiquitination / Regulation of APC/C activators between G1/S and early anaphase / Transcriptional Regulation by VENTX / positive regulation of axon extension / protein K48-linked ubiquitination / APC/C:Cdc20 mediated degradation of Cyclin B / APC-Cdc20 mediated degradation of Nek2A / regulation of mitotic cell cycle / 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 / CDK-mediated phosphorylation and removal of Cdc6 / Separation of Sister Chromatids / Antigen processing: Ubiquitination & Proteasome degradation / nervous system development / Senescence-Associated Secretory Phenotype (SASP) / cell differentiation / cell division / negative regulation of gene expression / ubiquitin protein ligase binding / nucleoplasm / cytosol 類似検索 - 分子機能 | |||||||||
生物種 | ![]() | |||||||||
手法 | 溶液NMR / torsion angle dynamics | |||||||||
![]() | Edmond, R.W. / Grace, C.R. | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Protein engineering of a ubiquitin-variant inhibitor of APC/C identifies a cryptic K48 ubiquitin chain binding site. 著者: Edmond R Watson / Christy R R Grace / Wei Zhang / Darcie J Miller / Iain F Davidson / J Rajan Prabu / Shanshan Yu / Derek L Bolhuis / Elizaveta T Kulko / Ronnald Vollrath / David Haselbach / ...著者: Edmond R Watson / Christy R R Grace / Wei Zhang / Darcie J Miller / Iain F Davidson / J Rajan Prabu / Shanshan Yu / Derek L Bolhuis / Elizaveta T Kulko / Ronnald Vollrath / David Haselbach / Holger Stark / Jan-Michael Peters / Nicholas G Brown / Sachdev S Sidhu / Brenda A Schulman / ![]() ![]() ![]() ![]() 要旨: Ubiquitin (Ub)-mediated proteolysis is a fundamental mechanism used by eukaryotic cells to maintain homeostasis and protein quality, and to control timing in biological processes. Two essential ...Ubiquitin (Ub)-mediated proteolysis is a fundamental mechanism used by eukaryotic cells to maintain homeostasis and protein quality, and to control timing in biological processes. Two essential aspects of Ub regulation are conjugation through E1-E2-E3 enzymatic cascades and recognition by Ub-binding domains. An emerging theme in the Ub field is that these 2 properties are often amalgamated in conjugation enzymes. In addition to covalent thioester linkage to Ub's C terminus for Ub transfer reactions, conjugation enzymes often bind noncovalently and weakly to Ub at "exosites." However, identification of such sites is typically empirical and particularly challenging in large molecular machines. Here, studying the 1.2-MDa E3 ligase anaphase-promoting complex/cyclosome (APC/C), which controls cell division and many aspects of neurobiology, we discover a method for identifying unexpected Ub-binding sites. Using a panel of Ub variants (UbVs), we identify a protein-based inhibitor that blocks Ub ligation to APC/C substrates in vitro and ex vivo. Biochemistry, NMR, and cryo-electron microscopy (cryo-EM) structurally define the UbV interaction, explain its inhibitory activity through binding the surface on the APC2 subunit that recruits the E2 enzyme UBE2C, and ultimately reveal that this APC2 surface is also a Ub-binding exosite with preference for K48-linked chains. The results provide a tool for probing APC/C activity, have implications for the coordination of K48-linked Ub chain binding by APC/C with the multistep process of substrate polyubiquitylation, and demonstrate the power of UbV technology for identifying cryptic Ub-binding sites within large multiprotein complexes. | |||||||||
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 | ![]() | 1.7 MB | 表示 | ![]() |
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PDB形式 | ![]() | 1.4 MB | 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
関連構造データ | ![]() 6nxkC ![]() 6nxlC C: 同じ文献を引用 ( |
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その他のデータベース |
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リンク
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集合体
登録構造単位 | ![]()
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NMR アンサンブル |
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要素
#1: タンパク質 | 分子量: 8550.763 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() |
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#2: タンパク質 | 分子量: 8552.692 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() |
#3: タンパク質 | 分子量: 10259.662 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() 参照: UniProt: Q9UJX6 |
-実験情報
-実験
実験 | 手法: 溶液NMR | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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NMR実験 |
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試料調製
詳細 | タイプ: solution 内容: 0.5 mM [U-99% 13C; U-99% 15N] WHB, 0.6 mM Ubiquitin Variant, 90% H2O/10% D2O 詳細: 0.5mM, 10mM HEPES, pH7, 100mM NaCl, 10mM DTT / Label: 15N_13C_WHB+UbVw / 溶媒系: 90% H2O/10% D2O | ||||||||||||
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試料 |
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試料状態 | 詳細: 0.5mM, 10mM HEPES, pH7, 100mM NaCl, 10mM DTT / イオン強度: 100 mM / Label: 15N_13C_WHB+UbVw / pH: 7 / 圧: atmospheric atm / 温度: 308 K |
-NMR測定
NMRスペクトロメーター |
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解析
NMR software |
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精密化 | 手法: torsion angle dynamics / ソフトェア番号: 1 / 詳細: Structures from cyana were minimized with CNS | |||||||||||||||||||||
代表構造 | 選択基準: lowest energy | |||||||||||||||||||||
NMRアンサンブル | コンフォーマー選択の基準: structures with the lowest energy 計算したコンフォーマーの数: 400 / 登録したコンフォーマーの数: 20 |