| Literature DB >> 14602927 |
Paul N Hengen1, Ilya G Lyakhov, Lisa E Stewart, Thomas D Schneider.
Abstract
The DNA-binding protein Fis frequently uses pairs of sites 7 or 11 base pairs (bp) apart. Two overlapping Fis sites separated by 11 bp are found in the Escherichia coli origin of chromosomal replication. Only one of these sites is bound by Fis at a time, so the structure is a molecular flip-flop that could direct alternative firing of replication complexes in opposite directions. Alternatively, the flip-flop could represent part of an on-off switch for replication. Because they can be used to create precise switched states, molecular flip-flops could be used as the basis of a novel molecular computer.Entities:
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Year: 2003 PMID: 14602927 PMCID: PMC275571 DOI: 10.1093/nar/gkg877
Source DB: PubMed Journal: Nucleic Acids Res ISSN: 0305-1048 Impact factor: 16.971