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.
--------
Question:  Two sequences in the Tip protein were previously shown to be involved in binding to Lck .

Answer: Tip protein


Question:  A third member of the family ( MNP - 3 ) is expressed in PMA induced HL60 cells and probably has a role in monocyte differentiation .

Answer: MNP - 3


Question:  Scatchard ' s analysis of [ 3H ] - moxestrol ( R2858 ) and [ 3H ] - estradiol binding proves the existence of a single class of receptor sites having a dissociation constant of 0 . 18 - 2 . 4 X 10 ( - 9 ) M .

Answer:
receptor sites