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]:  Biochemical characterization of MIP - 1 alpha nuclear protein .
[EX A]: nuclear protein

[EX Q]:  Constitutive transcription of CIITA from promoter III having been observed in unrelated melanoma cell lines , we propose the hypothesis that this phenomenon might not be a random event , but could be linked to the neoplasic state of the melanoma cells
[EX A]: promoter III

[EX Q]:  Nuclear extracts prepared from the Mono Mac 6 cells and RA synovial tissue were analyzed by electrophoretic mobility shift analysis ( EMSA ) for NF - kappaB DNA binding proteins .
[EX A]:
NF - kappaB