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.

 The corresponding tetrapeptide sequences SSPD and SATD for human and mouse PKC - epsilon , respectively , are unusual for caspase - 3 .
caspase - 3

 In vitro , c - Src phosphorylated FAK Tyr - 925 in a glutathione S - transferase - FAK C - terminal domain fusion protein , whereas FAK did not .
c - Src

 Further , we find that the BMI1 protein can also interact with itself .

BMI1 protein