electrophoretic analysis of isolated outer doublets of 9 + 2 flagella of wild-type cells and of `` '' 9 + 0 '' '' flagella of paralyzed mutants indicated that the outer doublets and central tubules were composed of two microtubule proteins ( tubulins 1 and 2 ) tubulins 1 and 2 were shown to have apparent molecular weights of 56,000 and 53,000 respectively
C0026042
o microtubule protei
C0041348
) tubuli