Actin and Myosin

ID #1576

Are there are two critical concentrations, one for the plus end and one for the minus end, and the Cc for the minus end is higher than the Cc for the plus end? So if the actual critical concentration for the minus end is above its Cc, then it will be polymerizing, and if it's below its Cc, then it will be depolymerizing, and if it's at its Cc, then there is no net growth. And the same is true for the plus end??


Yes,there are two critical concentrations, one for the plus end and one for the minus end, and the Cc for the minus end is higher than the Cc for the plus end.

 Right again with one slight clarification. "Actual critical concentration" is probably not a phrase that you should use. I believe what you meant was "actual amount of available G-actin" because the Cc never changes for a given end. And yes, the behavior will be the same at the other end, but the result could be different because of the differences in Cc between plus and minus ends.

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