- EMDB-6014: Dynein motor domain in the presence of ADP, with linker at position 2 -
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基本情報
登録情報
データベース: EMDB / ID: EMD-6014
タイトル
Dynein motor domain in the presence of ADP, with linker at position 2
マップデータ
Reconstruction of dynein motor domain in 100 uM ADP
試料
試料: Dynein motor domain in 100 uM ADP
タンパク質・ペプチド: Dynein heavy chain
キーワード
dynein / lis1 / regulation mechanism
機能・相同性
機能・相同性情報
karyogamy / astral microtubule / establishment of mitotic spindle localization / nuclear migration along microtubule / spindle pole body / minus-end-directed microtubule motor activity / dynein light intermediate chain binding / cytoplasmic dynein complex / dynein intermediate chain binding / nuclear migration ...karyogamy / astral microtubule / establishment of mitotic spindle localization / nuclear migration along microtubule / spindle pole body / minus-end-directed microtubule motor activity / dynein light intermediate chain binding / cytoplasmic dynein complex / dynein intermediate chain binding / nuclear migration / establishment of mitotic spindle orientation / mitotic sister chromatid segregation / cytoplasmic microtubule / cytoplasmic microtubule organization / Neutrophil degranulation / mitotic spindle organization / cell cortex / ATP hydrolysis activity / ATP binding / cytoplasm 類似検索 - 分子機能
: / DYN1, AAA+ ATPase lid domain / : / Dynein heavy chain, ATPase lid domain / P-loop containing dynein motor region / Dynein heavy chain, tail / Dynein heavy chain, N-terminal region 1 / Dynein heavy chain region D6 P-loop domain / Dynein heavy chain, linker / Dynein heavy chain, AAA module D4 ...: / DYN1, AAA+ ATPase lid domain / : / Dynein heavy chain, ATPase lid domain / P-loop containing dynein motor region / Dynein heavy chain, tail / Dynein heavy chain, N-terminal region 1 / Dynein heavy chain region D6 P-loop domain / Dynein heavy chain, linker / Dynein heavy chain, AAA module D4 / Dynein heavy chain, coiled coil stalk / Dynein heavy chain / Dynein heavy chain, hydrolytic ATP-binding dynein motor region / Dynein heavy chain, ATP-binding dynein motor region / Dynein heavy chain AAA lid domain / Dynein heavy chain AAA lid domain superfamily / Dynein heavy chain, domain 2, N-terminal / Dynein heavy chain, linker, subdomain 3 / Dynein heavy chain, AAA1 domain, small subdomain / Dynein heavy chain region D6 P-loop domain / Dynein heavy chain, N-terminal region 2 / Hydrolytic ATP binding site of dynein motor region / Microtubule-binding stalk of dynein motor / P-loop containing dynein motor region D4 / ATP-binding dynein motor region / Dynein heavy chain AAA lid domain / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
ジャーナル: Elife / 年: 2014 タイトル: Lis1 regulates dynein by sterically blocking its mechanochemical cycle. 著者: Katerina Toropova / Sirui Zou / Anthony J Roberts / William B Redwine / Brian S Goodman / Samara L Reck-Peterson / Andres E Leschziner / 要旨: Regulation of cytoplasmic dynein's motor activity is essential for diverse eukaryotic functions, including cell division, intracellular transport, and brain development. The dynein regulator Lis1 is ...Regulation of cytoplasmic dynein's motor activity is essential for diverse eukaryotic functions, including cell division, intracellular transport, and brain development. The dynein regulator Lis1 is known to keep dynein bound to microtubules; however, how this is accomplished mechanistically remains unknown. We have used three-dimensional electron microscopy, single-molecule imaging, biochemistry, and in vivo assays to help establish this mechanism. The three-dimensional structure of the dynein-Lis1 complex shows that binding of Lis1 to dynein's AAA+ ring sterically prevents dynein's main mechanical element, the 'linker', from completing its normal conformational cycle. Single-molecule experiments show that eliminating this block by shortening the linker to a point where it can physically bypass Lis1 renders single dynein motors insensitive to regulation by Lis1. Our data reveal that Lis1 keeps dynein in a persistent microtubule-bound state by directly blocking the progression of its mechanochemical cycle.
pH: 8 詳細: 50 mM Tris-HCl, 150 mM potassium acetate, 2 mM magnesium acetate, 1 mM EGTA, 1 mM DTT, 100 uM ADP
染色
タイプ: NEGATIVE 詳細: Grids with adsorbed protein were floated on 2% w/v uranyl formate, then sandwiched with a thin layer of carbon, blotted, and frozen in liquid nitrogen.
グリッド
詳細: 200 mesh C-flat grid with thin carbon support
凍結
凍結剤: NITROGEN / 装置: OTHER 手法: Manually blot, wait 10-20 seconds, then manually plunge into liquid nitrogen.
解像度のタイプ: BY AUTHOR / 解像度: 19.5 Å / 解像度の算出法: OTHER / ソフトウェア - 名称: RELION 詳細: The dataset was first 3D-classified in RELION to sort different linker positions. Particles in this map displayed a linker shifted relative to its position in the absence of nucleotide. 使用した粒子像数: 3983