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:  High and pathological PAI - 1 levels before and after the VO test were consistent with a defective fibrinolytic potential due to the inhibitory effect of PAI - 1 on plasminogen activation .

Output: PAI - 1


Input: Consider Input:  The consensus mammalian ER stress response element ( ERSE ) conserved among grp promoters consists of a tripartite structure CCAAT ( N9 ) CCACG , with N being a strikingly GC - rich region of 9 bp .

Output: grp promoters


Input: Consider Input:  To further identify the residues responsible for the activity , we isolated the mutant viruses that were not neutralized with the soluble form of MHV receptor proteins , since such mutants were expected to have mutations in amino acids responsible for receptor - binding activity .


Output: MHV receptor proteins