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]:  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]:  To study the mechanisms and the signaling pathways involved , IGF - 1R promoter reporter constructs were transiently transfected in CHO - AT1 cells that overexpress angiotensin AT1 receptors .
[EX A]: angiotensin AT1 receptors

[EX Q]:  The N - terminal exon1 had no homology at the amino acid level with NGFI - B , the mammalian homologue .
[EX A]:
NGFI - B