- EMDB-44954: Human Vault Cage in complex with NAD+ -
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基本情報
登録情報
データベース: EMDB / ID: EMD-44954
タイトル
Human Vault Cage in complex with NAD+
マップデータ
Sharpened cryo-EM map of the human MVP cage with bound NAD
試料
複合体: Binary complex of NAD+ bound to oligomerized human MVP
タンパク質・ペプチド: Major Vault Protein
キーワード
Vault / Vault Cage / MVP / Major Vault Protein / SPFH / PARP4 / Poly(ADP-ribose)Polymerase 4 / MINT / NAD+ / NAD / Poly(ADP-ribose)Polymerase / Ribonucleoprotein / Megadalton complex / TEP1 / vault RNA / PROTEIN TRANSPORT
機能・相同性
機能・相同性情報
negative regulation of protein tyrosine kinase activity / protein activation cascade / negative regulation of protein autophosphorylation / ERBB signaling pathway / negative regulation of epidermal growth factor receptor signaling pathway / mRNA transport / nuclear pore / protein transport / protein phosphatase binding / secretory granule lumen ...negative regulation of protein tyrosine kinase activity / protein activation cascade / negative regulation of protein autophosphorylation / ERBB signaling pathway / negative regulation of epidermal growth factor receptor signaling pathway / mRNA transport / nuclear pore / protein transport / protein phosphatase binding / secretory granule lumen / ficolin-1-rich granule lumen / cytoskeleton / cell population proliferation / ribonucleoprotein complex / Neutrophil degranulation / protein kinase binding / perinuclear region of cytoplasm / extracellular exosome / extracellular region / identical protein binding / nucleus / membrane / cytosol / cytoplasm 類似検索 - 分子機能
Major vault protein, N-terminal / Major vault protein, shoulder domain / Major vault protein / Major vault protein repeat domain 3 / Major vault protein repeat domain 2 / Major vault protein repeat domain 4 / Major vault protein repeat domain / Major vault protein repeat domain superfamily / Major vault protein repeat domain 2 superfamily / Major Vault Protein repeat domain ...Major vault protein, N-terminal / Major vault protein, shoulder domain / Major vault protein / Major vault protein repeat domain 3 / Major vault protein repeat domain 2 / Major vault protein repeat domain 4 / Major vault protein repeat domain / Major vault protein repeat domain superfamily / Major vault protein repeat domain 2 superfamily / Major Vault Protein repeat domain / Shoulder domain / Major Vault Protein repeat domain / Major Vault Protein Repeat domain / Major Vault Protein repeat domain / MVP (vault) repeat profile. / Band 7/SPFH domain superfamily 類似検索 - ドメイン・相同性
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R35 GM143052
米国
引用
ジャーナル: bioRxiv / 年: 2024 タイトル: Structural Insights into the Roles of PARP4 and NAD in the Human Vault Cage. 要旨: Vault is a massive ribonucleoprotein complex found across Eukaryota. The major vault protein (MVP) oligomerizes into an ovular cage, which contains several minor vault components (MVCs) and is ...Vault is a massive ribonucleoprotein complex found across Eukaryota. The major vault protein (MVP) oligomerizes into an ovular cage, which contains several minor vault components (MVCs) and is thought to transport transiently bound "cargo" molecules. Vertebrate vaults house a poly (ADP-ribose) polymerase (known as PARP4 in humans), which is the only MVC with known enzymatic activity. Despite being discovered decades ago, the molecular basis for PARP4's interaction with MVP remains unclear. In this study, we determined the structure of the human vault cage in complex with PARP4 and its enzymatic substrate NAD . The structures reveal atomic-level details of the protein-binding interface, as well as unexpected NAD -binding pockets within the interior of the vault cage. In addition, proteomics data show that human vaults purified from wild-type and PARP4-depleted cells interact with distinct subsets of proteins. Our results thereby support a model in which PARP4's specific incorporation into the vault cage helps to regulate vault's selection of cargo and its subcellular localization. Further, PARP4's proximity to MVP's NAD -binding sites could support its enzymatic function within the vault.
モデルのタイプ: OTHER / 詳細: EM map from a previous dataset we collected
最終 再構成
使用したクラス数: 1 想定した対称性 - 点群: D39 (2回x39回 2面回転対称) アルゴリズム: BACK PROJECTION / 解像度のタイプ: BY AUTHOR / 解像度: 3.1 Å / 解像度の算出法: FSC 0.143 CUT-OFF / ソフトウェア - 名称: cryoSPARC (ver. 3.3.1) ソフトウェア - 詳細: cryoSPARC Non-Uniform Refinement was performed. The program was instructed to optimize the per-particle defocus and per-exposure-group CTF parameters, fit the anisotropic ...ソフトウェア - 詳細: cryoSPARC Non-Uniform Refinement was performed. The program was instructed to optimize the per-particle defocus and per-exposure-group CTF parameters, fit the anisotropic beam magnification, and apply Ewald sphere correction using the correct curvature sign. 使用した粒子像数: 108991
初期 角度割当
タイプ: MAXIMUM LIKELIHOOD / ソフトウェア - 名称: cryoSPARC (ver. 3.3.1)
最終 角度割当
タイプ: MAXIMUM LIKELIHOOD / ソフトウェア - 名称: cryoSPARC (ver. 3.3.1)