Nucleic Acids Research, 1988, Vol. 16, No. 22 10657-10668
© 1988
MOLECULAR BIOLOGY |
The Xenopus laevis ribosomal gene promoter contains a binding site for Nuclear Factor-1
Basic Sciences Division, Hutchinson Cancer Research Center 1124 Columbia Street, Seattle, WA 98102, USA
Received July 21, 1988. Revised October 21, 1988. Accepted October 21, 1988.
Nuclear Factor I (NF1) is a DNA binding protein that is known to function in the replication of Adeno virus and also binds to many promoters recognized by RNA polyraerase II. We have found that there is also an NF1 binding site within the ribosomal gene promoter from Xenopus laevis as well as in several other promoters recognized by RNA polymerase I. The function of a binding site for a polymerase II transcription factor within a promoter recognized by polymerase I is not known. However, its presence suggests interesting regulatory possibilities.
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