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.

[Q]:  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 .
[A]: transcription factor Sp1


[Q]:  Mutations abolishing MalK function not only result in inability to transport maltose but also cause constitutive expression of the maltose regulon .
[A]: maltose regulon


[Q]:  A protein which promotes DNA strand transfer between linear double - stranded M13mp19 DNA and single - stranded viral M13mp19 DNA has been isolated from recA - E . coli .
[A]:
recA -