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.

Example Input:  We have analyzed the role of the HU protein in invertasome assembly when the enhancer is located at variable positions close to one of the recombination sites .
Example Output: HU protein

Example Input:  Iomazenil - SPECT revealed a highly significant increase in the benzodiazepine receptor uptake in all studied cortical regions except temporal cortices .
Example Output: benzodiazepine receptor

Example Input:  Surprisingly , although Mist1 binds to E - boxes in vivo , the Mist1 protein lacks a functional transcription activation domain .
Example Output:
Mist1 protein