 The protein was first named as CRMP-62 having a relative molecular mass of 62 kDa and later referred as CRMP-2.Concurrently, a 64 kDa protein named as TOAD-64 for Turned On After Division, was shown to increase significantly during the development of the cortex of the brain.The cDNA sequence of TOAD-64 corresponded to that of rat CRMP-2.