TopicPage for CP4-6 of Escherichia coli K-12
| ||Prophages         |
CP4-6 is a putative defective prophage with 29 genes and 5 pseudogenes (afuB', ykfC', ykfK', ykfL', and ptwF').
Although identified as a putative prophage-derived element, CP4-6 lacks signature capsid or assembly genes to confirm its origins. Alternatively, it could be derived from a novel integrative plasmid.
CP4-6 has apparently inserted into the thrW tRNA gene, creating a 60 bp duplication flanking CP4-6, including 49 bp of duplicated thrW sequence and 11 bp of downstream genomic sequence. The partial thrW fragment marking the clockwise (right) end of CP4-6 is annotated as a DLP12 attachment site thrW-derived pseudogene, named ptfW'.
Genomic coordinates: 262182-296489.
Length: 34,308 nt
This contiguous prophage interval and its length include compound insertion element sequences that are not prophage genes, IS911A'-IS30A-IS911A'-ISY-IS5A (269430-274373), IS1B-IS30B-ISX (278387-279650) and IS1C (289858-290625). IS1B interrupts the afuB' pseudogene.
The CP4-6 prophage length without the 4944 bp IS911A'-IS30A-IS911A'-ISY-IS5A, the 1264 bp IS1B-IS30B-ISX and the 768 bp IS1C included is 27,332 bp.
Bibliography (3 total) : Review Only   Up
Blattner FR, Plunkett G, Bloch CA, Perna NT, Burland V, Riley M, Collado-Vides J, Glasner JD, Rode CK, Mayhew GF, Gregor J, Davis NW, Kirkpatrick HA, Goeden MA, Rose DJ, Mau B, Shao Y (1997) The complete genome sequence of Escherichia coli K-12. Science 277:1453-62