Chapter 16 Flashcards by William Hutchens

Q

Formin

A

nucleates assembly, remains on growing end

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Q

Arp 2/3

A

nucleates assembly of web structure

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Q

Thymosin

A

binds subunits, prevents assembly

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Q

Profilin

A

binds subunits, speeds elongation

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Q

Tropomodulin

A

prevents asembly and disassembly at minus ends

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Q

Tropomyosin

A

stabilizes filaments

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Q

Cofilin

A

binds ADP actin, accelerates disassembly

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Q

Gelsolin

A

severs filaments, binds to plus end

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Q

Capping Protein

A

prevents assembly and disassembly at plus end

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Q

Fimbrin

A

bundles close together (Actin)

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Q

alpha-actinin

A

bundles far away (Actin)

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Q

Filamen

A

binds actin at right angles

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Q

Spectrin

A

attaches actin to membrane

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Q

Beta end

A

GTP is bound to this end

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Q

gamma-TuRC

A

nucleates assembly, remains associated with minus end

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Q

Stathmin

A

binds subunits, prevents assembly

Q

+TIPs

A

associates with plus end, links them to structures

Q

XMAP215

A

associates with plus end, accelerates assembly

Q

Kinesin 13

A

catastrophe and disassembly

Q

Katanin

A

cuts microtubules

Q

MAPs

A

stabilizes microtubules by bind along sides

Q

Tau

A

binds microtubules close together

Q

MAP2

A

binds microtubules far away

Q

Plectin

A

links microtubules to intermediate filaments

intermediate filaments:

keratin

two types of keratin

Keratin 1- acidic, keratin 2- basic

Nerofilaments

Allow growth of axon and diameter fluxuations