Actin Polymerization and Muscle Contraction

What is the significance of the sigmoidal curve in actin polymerization?

Why does the addition of nucleated actin accelerate actin polymerization?

What is the primary reason why actin dimers and trimers are considered unstable?

How does the use of Pyrene-conjugated actin contribute to the understanding of actin polymerization?

What is the role of salt in actin polymerization?

Based on the information provided, what can be inferred about the role of ATP in actin polymerization?

Which of the following statements accurately describes the relationship between actin, myosin, and ATP in muscle contraction?

Based on the information provided, how does the role of actin in muscle contraction align with its role in cell motility?

What does the presence of an ATP/GTP cap at the plus end of an actin or microtubule filament indicate?

What happens when a subunit in an actin or microtubule filament hydrolyzes ATP or GTP?

In vitro, what is the primary factor influencing the rate of actin filament polymerization?

Which of the following best describes the relationship between ATP/GTP hydrolysis and the stability of actin or microtubule filaments?

Why is the minus end of an actin or microtubule filament considered the slower growing end?

What is the primary role of ATPase or GTPase activity in the context of actin and microtubule dynamics?

What is the significance of the discovery of actin by Albert Szent-Györgyi's lab?

How do actin and microtubule filaments differ in their dynamic behaviors?

At steady-state, what is the relationship between the free subunit concentration and the rate of polymer elongation?

What does the critical concentration (Cc) represent in terms of polymer dynamics?

If the free subunit concentration is greater than the critical concentration (Cc), what happens to the polymer?

What is the mathematical expression for the elongation rate in terms of the free subunit concentration (subunit), the rate constant for association (kon), and the rate constant for dissociation (koff)?

How does the polarity of actin affect its dynamics?

What does the term "steady-state" refer to, in the context of cytoskeletal dynamics?

What is the mathematical expression for the critical concentration ("Cc") in terms of the rate constants for association (kon) and dissociation (koff)?

What is the relationship between the free subunit concentration (subunit) and the rate of polymer elongation (dn/dt) when the subunit concentration is less than the critical concentration (Cc)?

If the free subunit concentration is equal to the critical concentration (Cc), what is the rate of polymer elongation (dn/dt)?

What does the term "free subunit" refer to in the context of cytoskeletal dynamics?

What is the critical concentration (Cc) in the context of actin filament dynamics?

Which of the following statements correctly describes the relationship between actin subunit concentration and filament dynamics?

What is the significance of nucleotide hydrolysis in actin filament dynamics?

In the context of actin filament dynamics, which end of the filament is considered the 'growing' end?

What is the primary mechanism by which actin treadmilling occurs?

How does actin treadmilling contribute to the motility of Listeria monocytogenes?

Which of these is NOT a common property of actin and microtubule dynamics?

Which of the following is NOT a state associated with actin filament dynamics?

Which of the following statements accurately describes the relationship between critical concentration (Cc) and elongation rate?

Based on the provided information, which statement accurately compares the elongation rate at the minus end versus the plus end of a filament?

If the critical concentration at the minus end ($Cc^{-}$) is greater than the critical concentration at the plus end ($Cc^{+}$), what is the expected behavior of the filament in this scenario?

Why is the concept of treadmilling important in understanding filament dynamics?

Which of the following factors directly influences the values of $k_{on}$ and $k_{off}$ at each end of the filament?

The difference in critical concentration between the plus and minus ends of a filament can be attributed to which of the following?

Based on the provided information, what is the correct mathematical equation for calculating the critical concentration at the minus end ($Cc^{-}$)?

Why is the statement "Elongation rate indicates net growth or shrink. This is not the same as the polymerization rate." important in understanding filament dynamics?

Which component of the cytoskeleton is described as a hollow cylinder?

What is a common function of intermediate filaments?

Which protein is not typically associated with intermediate filaments?

Which cytoskeletal filament is primarily composed of G-actin subunits?

What structure is likely to have a functional equivalent of a nuclear lamina in plant cells?

What is the primary role of microtubules in a cell?

Which cytoskeletal component is responsible for the structure and flexibility of epithelial cells?

What type of cytoskeletal filament is least likely to be found in plant cells?