- PDB-4etp: C-terminal motor and motor homology domain of Kar3Vik1 fused to a... -
+
データを開く
IDまたはキーワード:
読み込み中...
-
基本情報
登録情報
データベース: PDB / ID: 4etp
タイトル
C-terminal motor and motor homology domain of Kar3Vik1 fused to a synthetic heterodimeric coiled coil
要素
Kinesin-like protein KAR3
Spindle pole body-associated protein VIK1
キーワード
MOTOR PROTEIN / Kinesin Motor Protein / Kinesin Motor Homology Domain / karyogamy / mitosis / microtubules / internal Vik1 crosslink with N / N-Ethylenebis(iodoacetamide) / Nucleus
機能・相同性
機能・相同性情報
minus-end-directed kinesin ATPase / nuclear migration involved in conjugation with cellular fusion / protein transport along microtubule to mitotic spindle pole body / karyogamy involved in conjugation with cellular fusion / mitotic spindle midzone assembly / cytoskeletal anchor activity / microtubule nucleation / spindle pole body / kinesin complex / minus-end-directed microtubule motor activity ...minus-end-directed kinesin ATPase / nuclear migration involved in conjugation with cellular fusion / protein transport along microtubule to mitotic spindle pole body / karyogamy involved in conjugation with cellular fusion / mitotic spindle midzone assembly / cytoskeletal anchor activity / microtubule nucleation / spindle pole body / kinesin complex / minus-end-directed microtubule motor activity / mitotic sister chromatid cohesion / microtubule-based process / cytoplasmic microtubule / ERAD pathway / regulation of mitotic spindle organization / meiotic cell cycle / spindle pole / mitotic cell cycle / chromosome / microtubule cytoskeleton / microtubule binding / microtubule / cell division / ATP hydrolysis activity / ATP binding / nucleus / cytoplasm 類似検索 - 分子機能
Kinesin - #20 / Spindle pole body-associated protein Vik1/Cik1, microtubule binding domain / Microtubule binding / Kinesin motor domain / Kinesin / Kinesin-like protein / Kinesin motor domain signature. / Kinesin motor domain, conserved site / Kinesin motor domain / Kinesin motor domain profile. ...Kinesin - #20 / Spindle pole body-associated protein Vik1/Cik1, microtubule binding domain / Microtubule binding / Kinesin motor domain / Kinesin / Kinesin-like protein / Kinesin motor domain signature. / Kinesin motor domain, conserved site / Kinesin motor domain / Kinesin motor domain profile. / Kinesin motor, catalytic domain. ATPase. / Kinesin motor domain / Kinesin motor domain superfamily / P-loop containing nucleoside triphosphate hydrolase / 3-Layer(aba) Sandwich / Alpha Beta 類似検索 - ドメイン・相同性
ADENOSINE-5'-DIPHOSPHATE / N,N'-ethane-1,2-diylbis(2-iodoacetamide) / Kinesin-like protein KAR3 / Spindle pole body-associated protein VIK1 類似検索 - 構成要素
ジャーナル: J Cell Biol / 年: 2012 タイトル: Kar3Vik1, a member of the kinesin-14 superfamily, shows a novel kinesin microtubule binding pattern. 著者: Katherine C Rank / Chun Ju Chen / Julia Cope / Ken Porche / Andreas Hoenger / Susan P Gilbert / Ivan Rayment / 要旨: Kinesin-14 motors generate microtubule minus-end-directed force used in mitosis and meiosis. These motors are dimeric and operate with a nonprocessive powerstroke mechanism, but the role of the ...Kinesin-14 motors generate microtubule minus-end-directed force used in mitosis and meiosis. These motors are dimeric and operate with a nonprocessive powerstroke mechanism, but the role of the second head in motility has been unclear. In Saccharomyces cerevisiae, the Kinesin-14 Kar3 forms a heterodimer with either Vik1 or Cik1. Vik1 contains a motor homology domain that retains microtubule binding properties but lacks a nucleotide binding site. In this case, both heads are implicated in motility. Here, we show through structural determination of a C-terminal heterodimeric Kar3Vik1, electron microscopy, equilibrium binding, and motility that at the start of the cycle, Kar3Vik1 binds to or occludes two αβ-tubulin subunits on adjacent protofilaments. The cycle begins as Vik1 collides with the microtubule followed by Kar3 microtubule association and ADP release, thereby destabilizing the Vik1-microtubule interaction and positioning the motor for the start of the powerstroke. The results indicate that head-head communication is mediated through the adjoining coiled coil.
THE STARTING MATERIAL USED FOR CROSS LINKING CONTAINED A IODINE ATOM THAT HAS LEAVED UPON REACTION ...THE STARTING MATERIAL USED FOR CROSS LINKING CONTAINED A IODINE ATOM THAT HAS LEAVED UPON REACTION WITH CYS. THE FINAL PRODUCT CORRESPONDS TO THE LIGAND EBC LINKED TO THE SIDE CHAINS OF CYS
配列の詳細
NATIVE KAR3VIK1 CONTAINS EXTENSIVE BUT WEAK COILED-COIL. FOR CRYSTALLIZATION, ALL BUT THE LAST C- ...NATIVE KAR3VIK1 CONTAINS EXTENSIVE BUT WEAK COILED-COIL. FOR CRYSTALLIZATION, ALL BUT THE LAST C-TERMINAL 2.5 NATIVE HEPTADS WERE REPLACED WITH STABILIZING HETERODIMERIC SYNTHETIC COILED-COIL. THIS FUSION DOES NOT AFFECT PROTEIN ACTIVITY
-
実験情報
-
実験
実験
手法: X線回折 / 使用した結晶の数: 1
-
試料調製
結晶
マシュー密度: 2.86 Å3/Da / 溶媒含有率: 57.04 %
結晶化
温度: 277 K / 手法: 蒸発脱水法 / pH: 7.5 詳細: 16% monomethyl polyethylene glycol 2000, 100 mM Hepes, 50 mM sodium citrate, Batch, pH 7.5, EVAPORATION, temperature 277K
解像度: 2.3→24.97 Å / Cor.coef. Fo:Fc: 0.95 / Cor.coef. Fo:Fc free: 0.936 / SU B: 10.825 / SU ML: 0.142 / 交差検証法: THROUGHOUT / σ(F): 0 / ESU R: 0.274 / ESU R Free: 0.215 / 立体化学のターゲット値: MAXIMUM LIKELIHOOD / 詳細: HYDROGENS HAVE BEEN USED IF PRESENT IN THE INPUT
Rfactor
反射数
%反射
Selection details
Rfree
0.24472
2156
5 %
RANDOM
Rwork
0.20731
-
-
-
all
0.20923
42866
-
-
obs
0.20923
42866
98.96 %
-
溶媒の処理
イオンプローブ半径: 0.8 Å / 減衰半径: 0.8 Å / VDWプローブ半径: 1 Å / 溶媒モデル: MASK