In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.

Input: Consider Input:  Molecular cloning of cDNAs encoding alpha - subunits of guanine nucleotide - binding regulatory proteins ( G - proteins ) has revealed the existence of nine species of alpha - subunits .

Output: G - proteins


Input: Consider Input:  Interestingly , these " activation - defective " mutants segregated into two classes : 1 ) those that were unable to form dimers but that could still form higher order oligomers and transform cells , and 2 ) those that were defective for PDGF - R binding and were transformation - incompetent .

Output: PDGF - R


Input: Consider Input:  We provided evidence that CaM kinase II played a role in regulating neurite outgrowth and growth cone motility in these cells , and that the autophosphorylation is essential for the kinase to sufficiently exert its cellular function in vivo [ Y .


Output: CaM kinase II