- EMDB-3707: Locally refined human cytoplasmic dynein-1 tail bound to dynactin... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-3707
タイトル
Locally refined human cytoplasmic dynein-1 tail bound to dynactin and an N-terminal construct of BICD2
マップデータ
Focused refinement of the dynein tail improved its density near the LIC binding site.
試料
複合体: Locally refined human cytoplasmic dynein-1 tail bound to dynactin and an N-terminal construct of BICD2
機能・相同性
機能・相同性情報
retrograde axonal transport of mitochondrion / Regulation of PLK1 Activity at G2/M Transition / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / Anchoring of the basal body to the plasma membrane / AURKA Activation by TPX2 / dynactin complex / Recruitment of mitotic centrosome proteins and complexes / F-actin capping protein complex / barbed-end actin filament capping ...retrograde axonal transport of mitochondrion / Regulation of PLK1 Activity at G2/M Transition / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / Anchoring of the basal body to the plasma membrane / AURKA Activation by TPX2 / dynactin complex / Recruitment of mitotic centrosome proteins and complexes / F-actin capping protein complex / barbed-end actin filament capping / Neutrophil degranulation / dense body / coronary vasculature development / dynein complex / COPI-independent Golgi-to-ER retrograde traffic / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / MHC class II antigen presentation / Recruitment of NuMA to mitotic centrosomes / aorta development / COPI-mediated anterograde transport / ventricular septum development / cortical cytoskeleton / dynein complex binding / microtubule-based process / COPI-mediated anterograde transport / axon cytoplasm / MHC class II antigen presentation / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / mitotic spindle organization / kinetochore / actin filament binding / actin binding / actin cytoskeleton organization / cell cortex / nuclear membrane / cytoskeleton / focal adhesion / centrosome / nucleoplasm / ATP binding / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能
Dynamitin / : / Dynamitin / Dynactin subunit 6 / Dynactin subunit 5 / F-actin-capping protein subunit beta / F-actin capping protein, beta subunit, conserved site / F-actin-capping protein subunit beta, N-terminal domain / F-actin capping protein, beta subunit / F-actin capping protein beta subunit signature. ...Dynamitin / : / Dynamitin / Dynactin subunit 6 / Dynactin subunit 5 / F-actin-capping protein subunit beta / F-actin capping protein, beta subunit, conserved site / F-actin-capping protein subunit beta, N-terminal domain / F-actin capping protein, beta subunit / F-actin capping protein beta subunit signature. / F-actin capping protein, alpha subunit, conserved site / F-actin capping protein alpha subunit signature 1. / F-actin capping protein alpha subunit signature 2. / F-actin-capping protein subunit alpha / F-actin-capping protein subunit alpha/beta / F-actin-capping protein subunit alpha/beta, domain 2 / F-actin capping protein, alpha subunit, domain 1 / F-actin capping protein alpha subunit / Trimeric LpxA-like superfamily / Actins signature 1. / Actin, conserved site / Actins signature 2. / Actin/actin-like conserved site / Actins and actin-related proteins signature. / Actin / Actin family / Actin / ATPase, nucleotide binding domain 類似検索 - ドメイン・相同性
ジャーナル: Cell / 年: 2017 タイトル: Cryo-EM Reveals How Human Cytoplasmic Dynein Is Auto-inhibited and Activated. 著者: Kai Zhang / Helen E Foster / Arnaud Rondelet / Samuel E Lacey / Nadia Bahi-Buisson / Alexander W Bird / Andrew P Carter / 要旨: Cytoplasmic dynein-1 binds dynactin and cargo adaptor proteins to form a transport machine capable of long-distance processive movement along microtubules. However, it is unclear why dynein-1 moves ...Cytoplasmic dynein-1 binds dynactin and cargo adaptor proteins to form a transport machine capable of long-distance processive movement along microtubules. However, it is unclear why dynein-1 moves poorly on its own or how it is activated by dynactin. Here, we present a cryoelectron microscopy structure of the complete 1.4-megadalton human dynein-1 complex in an inhibited state known as the phi-particle. We reveal the 3D structure of the cargo binding dynein tail and show how self-dimerization of the motor domains locks them in a conformation with low microtubule affinity. Disrupting motor dimerization with structure-based mutagenesis drives dynein-1 into an open form with higher affinity for both microtubules and dynactin. We find the open form is also inhibited for movement and that dynactin relieves this by reorienting the motor domains to interact correctly with microtubules. Our model explains how dynactin binding to the dynein-1 tail directly stimulates its motor activity.