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.

 Functional characterization of the two alternative promoters of human p45 NF - E2 gene .
alternative promoters

 In contrast , the binding of [ 3H ] DEX to C7 cytosol revealed a single class of binding sites ( Kd = 1 . 9 nM ; receptor concentration , 0 . 46 pmol / mg protein ) .
binding sites

 faim was identified by differential display and exists in two alternatively spliced forms ; faim - S is broadly expressed , but faim - L expression is tissue - specific .

faim - S

