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:  The human protein binds most strongly to the SH3 domain from the abl proto - oncogene .

Answer: SH3 domain


Question:  A regulatory element of the empty spiracles homeobox gene is composed of three distinct conserved regions that bind regulatory proteins .

Answer: empty spiracles


Question:  In K562 cells , using the bicistronic vector , selection with colchicine led to at least 20 - fold higher expression of the MDR1 gene product than did selection with G418 , suggesting that the stringent MDR1 selection system is very efficient for obtaining overexpression of foreign genes .

Answer:
MDR1 gene product