these include a heat-labile 80 k phosphodiesterase inhibitor protein ( calcineurin ) , a heat-stable 70 k phosphodiesterase inhibitor protein , a 50 k protein , myelin basic protein , tubulin , microtubule ? ( tau ) factor , a spectrin-like doublet protein ( 240 plus 235 k ) ( calspectin ; fodrin ) and a particle-associated 155 k protein .
C0041348
tubulin
C0026046
microtubule