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]:  Unlike CSK , the SH3 domain of HYL was unique since the ALYDY motif was absent .
[EX A]: SH3 domain

[EX Q]:  Sequence analysis revealed 100 % homology of all RA - derived PTEN fragments to those from normal SF as well as to the published GenBank sequence ( accession number U93051 ) .
[EX A]: PTEN fragments

[EX Q]:  The pepI gene was overexpressed in Escherichia coli .
[EX A]:
pepI gene