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:  However , in a variation of this assay in which the protease is omitted , the mutant enzymes exhibited substantial levels of prolyl isomerase activity ( 5 - 20 % of wild - type ) , revealing that these mutations confer sensitivity to protease digestion and that the classic in vitro assay for prolyl isomerase activity may be misleading .

Output: prolyl isomerase


Input: Consider Input:  With this study , a total of 13 operators for the glp regulon have been characterized .

Output: glp regulon


Input: Consider Input:  The originally embryonic gamma - globin locus duplicated and acquired a novel ( fetal ) pattern of expression in a defined time period ( 55 - 40 million years ago ) during primate phylogeny .


Output: gamma - globin