TASK DEFINITION: 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.
PROBLEM:  The requirement for an essential interaction between NPH I and H4L provides an explanation for the observed restriction of transcription termination to early viral genes .

SOLUTION: NPH I

PROBLEM:  A GT - rich sequence binding the transcription factor Sp1 is crucial for high expression of the human type VII collagen gene ( COL7A1 ) in fibroblasts and keratinocytes .

SOLUTION: transcription factor Sp1

PROBLEM:  To assess the safety of the angiotensin converting enzyme inhibitor enalapril a multicenter , open , randomized , prazosin - controlled trial was designed comparing the incidence and severity of symptomatic hypotension on the first day of treatment .

SOLUTION:
angiotensin converting enzyme