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 Input:
Mapping of the region in KAP - 1 required for HP1 interaction showed that amino acid substitutions which abolish HP1 binding in vitro reduce KAP - 1 mediated repression in vivo .

Ex Output:
KAP - 1

Ex Input:
Furthermore , the rapid light - mediated increase of CPRF proteins was insensitive to transcriptional inhibitors , suggesting that a post - transcriptional mechanism controls CPRF accumulation .

Ex Output:
CPRF proteins

Ex Input:
Promoter activity of the proliferating - cell nuclear antigen gene is associated with inducible CRE - binding proteins in interleukin 2 - stimulated T lymphocytes .

Ex Output:
interleukin 2