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KSU - BSCI 30140 - cell biology week 1 notes - Class Notes

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KSU - BSCI 30140 - cell biology week 1 notes - Class Notes

School: Kent State University
Department: Biology
Course: Cell Biology
Professor: Jennifer McDonough
Term: Spring 2017
Tags: Bio, Biology, and Cell
Name: cell biology week 1 notes
Description: these cover what we learned in week 1 of class
Uploaded: 01/29/2018
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Join more than 18,000+ college students at Kent State University who use StudySoup to get ahead
School: Kent State University
Department: Biology
Course: Cell Biology
Professor: Jennifer McDonough
Term: Spring 2017
Tags: Bio, Biology, and Cell
Name: cell biology week 1 notes
Description: these cover what we learned in week 1 of class
Uploaded: 01/29/2018
4 Pages 33 Views 26 Unlocks
  • Better Grades Guarantee
  • 24/7 Homework help
  • Notes, Study Guides, Flashcards + More!

Unformatted text preview: Chapter 17 cytoskeleton Cell motility Oeutrophil: WBC that kills bacterium - Moves by actin - Chases Chemical released from bacteria Actin -Thin flexible - Many proteins bind to actin & modify its Properties: - extra cellular Signals Change where actio poves - Protein : composed of many amino acids - Binals to ATP - Garow at (f) end, shkink at (-) end - dissociates easier in ADP form VS ATP (t) acto monomers: - nucleating protein :nucitate into al wtore Stucture. - formins nucleates actin ort ) end ; Creates long Pllament Structure. Bacteria must sccrtte chemical, which binds to a receptor in the actin which changes the poiymerization. lamelli podi um: flatten ed sheet- like, Protrosion @ the leading cdge of moving cell. filopodium ; Thin slike -lire ProtrusionSignal transduction : - Signals activate receptors CARP ,nucleaflon of actin) -receptors signal P binding proteins - GTP changes direction actin moves in CDC 42 : stimulates the form in . Rac. Stimulates ARP GTP goes through hydrolysis and turns into GPP and shuts of receptors. - Chemical - Bacteria feceptor Polling GDP out; petng GT P ON Gruan ine RAC - GDP GEF inactive Exchange Factor YRAC - GTP active ARP nucleates actin webo - live Temella PodiaSurface Contact Poolfom moving forward. (Rac - ARP) cm - Contraction in the baciz cpc42 ca use for min nucltation - focal contacts e integun mares contact wextracellular matrix or another cus Dther examples of cel movement - wound healing - Neuro Pathfinding Cgrowth con es ) - angiogenesis (paw vessels Sprout from existing)VEGF) Time course of polyma i zatlon - lag phase (Not in cells', ARP replaces the jag phase ) - qvowth phase - equilibrium phase Mos le contract lon - Myosin: motor Protein Binds to actin Myosine - | :- Binds to vesicle (mores towara (4) ma) or can bind to plasma memorare (moves toward (-) end) . Mypsine - || : creates filamnts in moscles ) - Sarcomete lunit that contracts) park and is myosine-Il filament light pand is actin Z-discs at the end 12 ji ght 1 dark)

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