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]:  Using unidirectional PCR we isolated a 361 - bp 5 ' promoter region and delineated the intronic / exonic boundaries which include a non - coding exon 1 , a single intron , and a coding exon 2 , a structure that is typical of genes of the RNase A superfamily .
[EX A]: RNase A superfamily

[EX Q]:  In addition , Fc epsilon R1 cross - linking activates PI 3 - kinase .
[EX A]: Fc epsilon R1

[EX Q]:  PtdIns ( 4 , 5 ) P2 synthesis , on the other hand , is only moderately affected even in fab1Delta mutants .
[EX A]:
fab1Delta mutants