Antigen Presentation: Folding, assembly and peptide loading of class I MHC / Cargo concentration in the ER / regulation of COPII vesicle coating / positive regulation of ER to Golgi vesicle-mediated transport / mitochondria-associated endoplasmic reticulum membrane contact site / COPII-mediated vesicle transport / nuclear envelope organization / COPII-coated vesicle cargo loading / vesicle organization / COPII vesicle coat ...Antigen Presentation: Folding, assembly and peptide loading of class I MHC / Cargo concentration in the ER / regulation of COPII vesicle coating / positive regulation of ER to Golgi vesicle-mediated transport / mitochondria-associated endoplasmic reticulum membrane contact site / COPII-mediated vesicle transport / nuclear envelope organization / COPII-coated vesicle cargo loading / vesicle organization / COPII vesicle coat / positive regulation of protein exit from endoplasmic reticulum / membrane organization / signal sequence binding / mitochondrial fission / mitochondrial membrane organization / reticulophagy / fungal-type vacuole membrane / endoplasmic reticulum exit site / endoplasmic reticulum to Golgi vesicle-mediated transport / GTPase activator activity / SNARE binding / macroautophagy / 加水分解酵素; 酸無水物に作用; GTPに作用・細胞または細胞小器官の運動に関与 / intracellular protein transport / Golgi membrane / GTPase activity / endoplasmic reticulum membrane / GTP binding / Golgi apparatus / endoplasmic reticulum / mitochondrion / zinc ion binding 類似検索 - 分子機能
small GTPase SAR1 family profile. / Small GTPase superfamily, SAR1-type / Protein transport protein Sec23 / Sec23, C-terminal / : / Sec24-like, trunk domain / Zinc finger, Sec23/Sec24-type / Sec23/Sec24, trunk domain / Sec23/Sec24, helical domain / Sec23/Sec24 beta-sandwich ...small GTPase SAR1 family profile. / Small GTPase superfamily, SAR1-type / Protein transport protein Sec23 / Sec23, C-terminal / : / Sec24-like, trunk domain / Zinc finger, Sec23/Sec24-type / Sec23/Sec24, trunk domain / Sec23/Sec24, helical domain / Sec23/Sec24 beta-sandwich / Zinc finger, Sec23/Sec24-type / Sec23/Sec24, trunk domain / Sec23/Sec24, helical domain / Sec23/Sec24 beta-sandwich / Zinc finger, Sec23/Sec24-type superfamily / Sec23/Sec24 helical domain superfamily / Sec23/Sec24 zinc finger / Sec23/Sec24 trunk domain / Sec23/Sec24 helical domain / Sec23/Sec24 beta-sandwich domain / Ras GTPase-activating domain / Gelsolin-like domain superfamily / small GTPase Arf family profile. / Roc domain / Sar1p-like members of the Ras-family of small GTPases / Gelsolin-like domain / Gelsolin repeat / Small GTPase superfamily, ARF/SAR type / ADP-ribosylation factor family / ARF-like small GTPases; ARF, ADP-ribosylation factor / ADF-H/Gelsolin-like domain superfamily / von Willebrand factor A-like domain superfamily / Small GTP-binding protein domain / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
Sec24p / Small COPII coat GTPase SAR1 / : / Protein transport protein SEC23 / Small COPII coat GTPase SAR1 / Protein transport protein SEC24 類似検索 - 構成要素
ジャーナル: Elife / 年: 2013 タイトル: The structure of the COPII transport-vesicle coat assembled on membranes. 著者: Giulia Zanetti / Simone Prinz / Sebastian Daum / Annette Meister / Randy Schekman / Kirsten Bacia / John A G Briggs / 要旨: Coat protein complex II (COPII) mediates formation of the membrane vesicles that export newly synthesised proteins from the endoplasmic reticulum. The inner COPII proteins bind to cargo and membrane, ...Coat protein complex II (COPII) mediates formation of the membrane vesicles that export newly synthesised proteins from the endoplasmic reticulum. The inner COPII proteins bind to cargo and membrane, linking them to the outer COPII components that form a cage around the vesicle. Regulated flexibility in coat architecture is essential for transport of a variety of differently sized cargoes, but structural data on the assembled coat has not been available. We have used cryo-electron tomography and subtomogram averaging to determine the structure of the complete, membrane-assembled COPII coat. We describe a novel arrangement of the outer coat and find that the inner coat can assemble into regular lattices. The data reveal how coat subunits interact with one another and with the membrane, suggesting how coordinated assembly of inner and outer coats can mediate and regulate packaging of vesicles ranging from small spheres to large tubular carriers. DOI:http://dx.doi.org/10.7554/eLife.00951.001.
試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER Tilt series - Axis1 - Min angle: -60 ° / Tilt series - Axis1 - Max angle: 60 °
実験機器
モデル: Titan Krios / 画像提供: FEI Company
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画像解析
詳細
see materials and methods in relevant publication
最終 再構成
想定した対称性 - 点群: C1 (非対称) / アルゴリズム: OTHER / 解像度のタイプ: BY AUTHOR / 解像度: 23.0 Å / 解像度の算出法: OTHER / ソフトウェア - 名称: TOM/AV3, Matlab 詳細: final map was average of two datasets independently processed 使用したサブトモグラム数: 5000