Task: Named Entity Recognition
Input (English):  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 (English): phosphoprotein pUL69