You will be given a definition of a task first, then some input of the task.
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 phosphoprotein pUL69 of human cytomegalovirus ( HCMV ) , which is a herpesvirus of considerable medical importance in immunosuppressed patients and newborns , has previously been identified as an early - late viral protein that can stimulate several viral and cellular promoters and thus exerts a rather broad activation pattern .
Output:
phosphoprotein pUL69