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.

 The strongly DNA binding p50 subunit showed only very weak , if any , induction of gene expression .
p50 subunit

 It is hypothesized this occurs through antagonism of PML / RAR alpha actions in these leukemic cells .
RAR alpha

 In addition , putative binding sites for SH3 and SH2 domains are present in the amino - terminal half of the molecule .

SH2 domains