In absence of nt:
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Dynein binds to Mt, linker is straight (between 1st and 5th AAA repeats);
Dynein-dynactin moves Golgi body towards
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centromere (- end)
Regulation of the Rho family of small GTPases (Rac, Rho, Cdc42)
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GDI: Guanine nucleotide Dissociation Inhibitor
GEF: Guanine nucleotide Exchange Factor
GAP: GTPase Activation Protein
Cause changes in Actin cytoskeleton
Rho Binding Domain (RBD) in WAVE (a Nucleation Promoting Factor), binds to _____
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Rac1
Myosin moves (appears)
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towards + side (plus end)
,XMAP215 stabilized
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Kinesin 13
Arp2/3-dependent actin polymerization:
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moves pathogenic bacteria and endocytic vesicles within cells
pushes the leading edge membrane forward in moving cells
Actin nucleation by the Arp2/3 complex process
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1. 2 NPF each bind an actin monomer
2. Binding of 2 NPF actin complexes to the Arp 2/3 complex which induces
a conformational change that activates the Arp 2/3 complex
3. he activated Arp 2/3 complex binds to the side of an existing actin
filament
4. Binds the negative ends of the actin subunit transferred from NPF W
domains
Why negative end? b/c the growing end is the positive side
, Intermediate Filaments
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IF subunits don't bind a nucleotide
Unpolarized
No motors
Dynamic instability depends on the presence or absence of a "GTP-β-tubulin" cap
Rescue
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rate of GTP-tubulin addition is greater than rate of GTP hydrolysis
An intraflagellar transport (IFT) system transports
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material to the tip by kinesin-2 activity and from the tip back to the base by
cytoplasmic dynein activity.
Toxins affect the dynamics of
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Dynein binds to Mt, linker is straight (between 1st and 5th AAA repeats);
Dynein-dynactin moves Golgi body towards
,Give this one a try later!
centromere (- end)
Regulation of the Rho family of small GTPases (Rac, Rho, Cdc42)
Give this one a try later!
GDI: Guanine nucleotide Dissociation Inhibitor
GEF: Guanine nucleotide Exchange Factor
GAP: GTPase Activation Protein
Cause changes in Actin cytoskeleton
Rho Binding Domain (RBD) in WAVE (a Nucleation Promoting Factor), binds to _____
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Rac1
Myosin moves (appears)
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towards + side (plus end)
,XMAP215 stabilized
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Kinesin 13
Arp2/3-dependent actin polymerization:
Give this one a try later!
moves pathogenic bacteria and endocytic vesicles within cells
pushes the leading edge membrane forward in moving cells
Actin nucleation by the Arp2/3 complex process
Give this one a try later!
1. 2 NPF each bind an actin monomer
2. Binding of 2 NPF actin complexes to the Arp 2/3 complex which induces
a conformational change that activates the Arp 2/3 complex
3. he activated Arp 2/3 complex binds to the side of an existing actin
filament
4. Binds the negative ends of the actin subunit transferred from NPF W
domains
Why negative end? b/c the growing end is the positive side
, Intermediate Filaments
Give this one a try later!
IF subunits don't bind a nucleotide
Unpolarized
No motors
Dynamic instability depends on the presence or absence of a "GTP-β-tubulin" cap
Rescue
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rate of GTP-tubulin addition is greater than rate of GTP hydrolysis
An intraflagellar transport (IFT) system transports
Give this one a try later!
material to the tip by kinesin-2 activity and from the tip back to the base by
cytoplasmic dynein activity.
Toxins affect the dynamics of
Give this one a try later!
