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.

[EX Q]:  Engineering temperature - sensitive SH3 domains .
[EX A]: SH3 domains

[EX Q]:  Toxicity of benzoyl chloride ( 2 , 4 , 6 - trichlorophenyl ) hydrazone ( Banamite ) and potential metabolites to twospotted spider mites and potency as inhibitors of rat liver monoamine oxidase .
[EX A]: monoamine oxidase

[EX Q]:  Although several other signal transduction molecules also contain tandemly occurring SH3 and SH2 domains , the function of these closely spaced domains is not well understood .
[EX A]:
SH2 domains