1. Types and functions of actin binding proteins 2. Microtubule associating proteins play a role in...
1. Types and functions of actin binding proteins
2. Microtubule associating proteins play a role in microtubule dynamic instability, What is dynamic instability,
Homework Answers
1)
Focal adhesion proteins-
Talin: confirms the crosstalking of actine by phospholipids interaction.
Vinculin: an interacting protein which helps in the f-actin anchoring.
Capping & actin severing proteins-
Capz: in the muscle cells, it helps in capping the barbered ends.
Gelsolin: controls the length of actin filament.
Bundling and crosslinking proteins-
Filamin: forms orthogonal and it is a crosslinker.
Fascin: function is the bundling of actin filaments to the actin binding sites.
Alpha actinin: binds f-actin filaments.
Actin sequestering proteins-
Profilin: functions in the binding of actin to prevent the polymerization of actin.
Thymosin beta 4
F -actin stabilizing & regulatory proteins-
Tropomyosin: functions to make the actin networks stronger.
F -actin depolymerizing proteins-
Cofilin: functions to depolymerize the F -actin to prevent the G-actin polymerization.
Nucleating & motor proteins-
Myosin:
Gelsolin: see top answer.
Arp2/3 complex: builds the nucleation cores.
2) Time intervals of quick polymerization of microtubules that differs with the time intervals of shrinkage in one peicess is referred as dynamic stability.
hope the answer helps.
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1. Types and functions of actin binding proteins
2. Microtubule associating proteins play a role in...
I just want to see if the answers are right, so for 1a. since the microtubule...
I just want to see if the answers are right, so for 1a. since
the microtubule is in a cell that's in G0, would there be no
movement since everything stops in G0 phase? Or are the
microtubules continously depolymerizing/polymerizing at a constant
rate?
For 1b. I said the same thing since the cell is in G0 phase then
it wouldn't matter if it was microtubule treadmilling, it wouldn't
be moving.
1c. I'm not sure what exactly would happen
I'm...
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1) Comparisons of microtubule behavior between species point to differences that raise questions about the biological...
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differences that raise questions about the biological importance of
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the Southern Ocean at a constant temperature of –1.8°C, have
remarkably stable microtubules compared with warm-blooded
vertebrates such as the cow. This is an essential modification for
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I just want to see if the answers are right, so for 1a. since
the microtubule is in a cell that's in G0, would there be no
movement since everything stops in G0 phase? Or are the
microtubules continously depolymerizing/polymerizing at a constant
rate?
For 1b. I said the same thing since the cell is in G0 phase then
it wouldn't matter if it was microtubule treadmilling, it wouldn't
be moving.
1c. I'm not sure what exactly would happen
I'm...
Various sigma factors play a role in gene expression by Choose one: A. allowing for binding of various enhancer proteins to aid initiation. O B. bringing about an early termination due to hairpins in the message. C. using alternate nucleotides to promote different genes. O D. binding to a variety of different -10 and -35 sequences.
1) Comparisons of microtubule behavior between species point to
differences that raise questions about the biological importance of
dynamic instability. Notothenioid fish, for example, which live in
the Southern Ocean at a constant temperature of –1.8°C, have
remarkably stable microtubules compared with warm-blooded
vertebrates such as the cow. This is an essential modification for
notothenioid fish because normal microtubules disassemble
completely into αβ-tubulin dimers at 0°C. Measurements on
individual microtubules in solutions of pure tubulin show that
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Dynamic instability causes microtubules to either grow or shrink rapidly. Consider an individual microtubule that is i its growing phase: What causes the microtubule to stop growing and to rapidly shrink/depolymerize? 1. Concentration of free GDP-tubulin in 2. Concentration of free GTP-tubulin in the 3. Rate of addition of GTP-tubulin to the A. 1 and 4 B" 2 and 3 C. 1, 3 and 4 D. 2, 4 and 5 E. 2, 3 and 5 the solution increases...
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