RRC ID 30146
Author Bates DB, Boye E, Asai T, Kogoma T.
Title The absence of effect of gid or mioC transcription on the initiation of chromosomal replication in Escherichia coli.
Journal Proc Natl Acad Sci U S A
Abstract Despite the widely accepted view that transcription of gid and mioC is required for efficient initiation of cloned oriC, we show that these transcriptions have very little effect on initiation of chromosome replication at wild-type chromosomal oriC. Furthermore, neither gid nor mioC transcription is required in cells deficient in the histone-like proteins Fis or IHF. However, oriC that is sufficiently impaired for initiation by deletion of DnaA box R4 requires transcription of at least one of these genes. We conclude that transcription of mioC and especially gid is needed to activate oriC only under suboptimal conditions. We suggest that either the rifampicin-sensitive step of initiation is some other transcription occurring from promoter(s) within oriC, or the original inference of transcriptional activation derived from the rifampicin experiments is incorrect.
Volume 94(23)
Pages 12497-502
Published 1997-11-11
DOI 10.1073/pnas.94.23.12497
PMID 9356478
PMC PMC25015
MeSH Bacterial Proteins / genetics* Base Sequence Chromosomes, Bacterial / genetics* DNA Replication* DNA, Bacterial / genetics Escherichia coli / genetics* Escherichia coli Proteins* Flavoproteins* Genes, Bacterial* Molecular Sequence Data Plasmids Transcription, Genetic
IF 9.412
Times Cited 33
WOS Category BIOCHEMISTRY & MOLECULAR BIOLOGY
Resource
Prokaryotes E. coli ME9391 ME9552