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.

Input: Consider Input:  This complex was eliminated by mutation of either half - site , and it was supershifted by antibodies against chicken ovalbumin upstream promoter - transcription factor ( COUP - TF ) .

Output: COUP - TF


Input: Consider Input:  These proteins were detected by an antibody which recognizes the N - terminus of SRK3 and , in an F2 progeny segregating for the S3 haplotype , were only expressed in plants possessing the S3 haplotype .

Output: S3 haplotype


Input: Consider Input:  These results provide strong evidence that conserved interhelical packing interactions in the gp41 core are important determinants of HIV - 1 entry and its inhibition .


Output: gp41 core