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:
 Role of zinc - finger proteins Sp1 and zif268 / egr - 1 in transcriptional regulation of the human synaptobrevin II gene .

Ex Output:
egr - 1


Ex Input:
 They are transduced through TM to the cytoplasmic portion ( cytoloops and the C - terminal tail ) of the receptor and then , transferred to cytoplasmic signaling molecules , such as G protein .

Ex Output:
G protein


Ex Input:
 Although polyubiquitin chains linked through Lys ( 29 ) of ubiquitin have been implicated in the targeting of certain substrates to proteasomes , the signaling properties of these chains are poorly understood .

Ex Output:

polyubiquitin chains