Difference between revisions of "Part:BBa K676012"

Revision as of 04:19, 22 September 2011

Gyrase Binding Site from pBR322

The gyrase site cloned from pBR322 plasmid.

Sequence and Features

Assembly Compatibility:

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 ===Usage and Biology===
+In the in vitro pBR322 plasmid GBS study, experts identified that the preferred cleavage site for gyrase have the following consensus DNA sequence: 5’-GGCTGGATGGCCTTCCCCAT-3’ . Throughout this study, researchers also found out that the cleavage occurs specifically between the TG residues (990th nucleotide in the pBR322 plasmid) in the DNA sequence [1]. By multiple sequence alignments and mathematical predictions, they predicted the presence of around 45 to 50 major gyrase binding sites in the entire E. coli genome. These predicted sites were later seen to play an important role in compacting the bacterial chromosomal nucleoid as well as regulating the transcription and DNA replication. However, apart from these major binding sites, there are still roughly 10,000 more of the weak binding sites, which gyrase will not normally associate unless they are present in a high enough concentration.
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