chick synaptic membranes may lack the cyclic adenosine monophosphate-requiring , microtubule-associated phosphoprotein , map2 , one of the 2 neurospecific , cyclic adenosine monophosphate-requiring and ca2+ , calmodulin-requiring phosphoproteins ( protein ib , although protein ia apparently is present ) , and the ca2+-requiring , calmodulin-independent , acth-sensitive phosphoprotein , b50 .
C0033684
protein
C0031689
phosphoprotein