OSSF Cytoskeletal proteins Questions and Answers 2024/2025
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Course
OSSF
Institution
OSSF
What are the 3 primary types of protein filamanets?
Actin microfilaments, intermediate filaments, microtubules
What is the thinnest, most flexible component of the cytoskeleton?
Actin filaments
What are actin filaments made of?
Globular actin monomers with their own ATP binding sit...
What is the anchoring site where actin filaments and microtubules grow from?
Nucleation site
Where is the nucleation site for acting molecules?
Plasma membrane
Where is the nucleation site for microtubules?
Microtubule organizing centers (MOC)
The binding of subunits causes hydrolysis of ATP (actin) or GTP (microtubules) and decreases
the strength of binding causing...
Dynamic instability
Which end do the ATP/ GTP molecules dissociate from?
Minus end
What provides a stronger, stable actin structure?
Bundling proteins together
What regulates shape and number of actin filaments and microtubules through altering the
number of regulatory proteins?
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