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复旦大学_2013现代生物学基础与前言ISecretory Pathway-an Overview
Secretory Pathway-an Overview ;Exocytic Trafficking to the Plasma Membrane;(cytoskeleton, motors, etc.);;(cytoskeleton, motors, etc.);The Rab Cascade ;Rab8 -Regulates vesicle transport to the plasma membrane. -Is activated by its guanine nucleotide factor, Rabin8.;Rab11;Rab11-GTP directly binds to Rabin8;Possible Effects of GTP-Rab11 on Rabin8 -Vesicle recruitment -Kinetic activation ;Rab11-GTP mediates the recruitment of Rabin8 to the secretory vesicles;Rab11 Stimulates the GEF Activity of Rabin8;How does GTP-Rab11 stimulate the guanine nucleotide exchange activity of Rabin8? ;Rab11 binds to Rabin8 (a.a.261-331) ;Sec2p: aa221-226 SLYNEF Rabin8: aa300-305 SLYNEF;Rabin8 (a.a. 261-331) binds to Rab11 and Sec15;The Rab11-binding-deficient Rabin8 mutant Is a stronger GEF for Rab8;The Rabin8 Activation Model;Rabs, Exocyst, and SNAREs;Rabin8 GEF;The Exocyst Complex ;Exocyst;Exo84-GFP;Exocyst mutants accumulate post-Golgi secretory vesicles;70;He and Guo (2009) Current Opinions in Cell Biology ; The Exocyst in Directional Cell Migration and Tumor Invasion -An interplay between actin cytoskeleton and plasma membrane ;Cell protrusion is mediated by the formation of a branched network of F-actin underneath the plasma membrane.;The Arp2/3 Complex;Arp2/3-mediated Lamellipodial Protrusion;;The Arp2/3 Complex;Exo70 Potentiates WAVE2/Arp2/3-Mediated Actin Polymerization (pyrene actin assay);Exo70 Stimulates Arp2/3-mediated Actin Branching ;Exo70 induces lumenal invaginations on liposomes;GFP-Exo70 ;Exo70 Induces Tubular Invaginations on Giant Unilamellar Vesicles (GUVs) ;;Oligomerization of Exo70 is required for membrane curvature induction.;Molecular dynamics simulation on lipid bilayers;Exo70 dimers induce curvature;Mesoscale simulations on vesicles;GFP-Exo70 ;The Arp2/3 Complex;;Analysis of Exo70-induced Membrane Protrusions (I);Analysis of Exo70-induced Membrane Protrusions (II);Analysis of Exo70-induced Membrane Protrusions (III);;Effect of Exo70 knockdown on SNB19 ce
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