Which of the following ions are necessary for assembly of microtubules?

Options

A. `Na^(+) and K^(+)`
B. `Ca^(2+) and Cl^(-)`
C. `Ca^(+) and Mg^(2+)`
D. `Na^(+) and Ca^(2+)`

Answer

C

Explanation

Richard Weisenberg (1972) reported the tubulin polymerisation by addition of `Mg^(2+)` and `Cu^(2+)`. Microtubules could be disassembled and reassembled over the over by changing on concentration and lowering and raising the temperature.