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(Received for publication, April 7,
1995; and in revised form, July 12, 1995) The coliphage N4-coded single-stranded DNA-binding protein
(N4SSB) is essential for phage replication and for expression of the
phage late genes, which are transcribed by the Escherichia coli
Volume 270,
Number 38,
Issue of September 22, pp. 22541-22547, 1995
©1995 by The American Society for Biochemistry and Molecular Biology, Inc.
A PROTEIN REQUIRED FOR PHAGE REPLICATION, RECOMBINATION, AND LATE
TRANSCRIPTION
RNA polymerase. As a first step in
investigating the role of N4SSB in replication and transcriptional
activation, we have identified and sequenced the N4SSB gene. The gene
encodes a 265-amino acid protein with no apparent sequence homology to
other single-stranded DNA-binding proteins. We present data indicating
that N4SSB is also essential for phage recombination. Mutational
analysis of the carboxyl terminus of the protein indicates that this
region is required for protein-protein interactions with the N4
replication, N4 recombination, and E. coli transcriptional
machineries, while the rest of the protein contains the determinants
for single-stranded DNA binding.
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R. H. Carter, A. A. Demidenko, S. Hattingh-Willis, and L. B. Rothman-Denes Phage N4 RNA polymerase II recruitment to DNA by a single-stranded DNA-binding protein Genes & Dev., September 15, 2003; 17(18): 2334 - 2345. [Abstract] [Full Text] [PDF] |
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