Category:Strain:BW25113
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| Name |
BW25113 |
|---|---|
| Synonyms | |
| Genotype |
F-, DE(araD-araB)567, lacZ4787(del)::rrnB-3, LAM-, rph-1, DE(rhaD-rhaB)568, hsdR514 |
| Phenotype | |
| Plasmids | |
| Phage | |
| Sources | |
| Construction |
see description below |
| References | |
| edit table |
Notes
BW25113 is a derivative of the F-, λ-, E. coli K-12 strain BD792 (CGSC6159)[1], which is a derivative of E. coli K-12 W1485. An rpoS+ derivative of BD792, which was constructed as described below, is the ancestor of BW25113.
i) W1485 ([CGSC# 5024]) F+ LAM- rpoS396(Am) rph-1 -->
ii) BD792 ([CGSC# 6159]) F- LAM- rpoS396(Am) rph-1. This is an F- derivative of W1485, cured with acridine orange. -->
iii) An rpoS+ derivative of BD792 was made in two steps. BD792 "was first made tetracycline resistant and kanamycin resistant by using P1kc grown on ZK1001 (cysC95::Tn10 rpoS::kan; from R. Kolter). A resultant Cys- transductant was then made cysteine independent and kanamycin sensitive by using P1kc grown on MG1655. E. coli K-12 strains BW25113, BW25141, BW25142, and BW25695 are descendants of BD792 derivatives that were made rpoS+ ([3])." -->
The following 13 steps in the construction of BW25113 are described in Supplementary Table 1 of Baba et al. ([2]).
iv) BW21597 DEphoR574 rph-1
v) BW21652 DEphoR574 DE(creABCD)154 rph-1
vi) BW23186 DEphoR574 DE(creABCD)154 DE(araBAD)567 rph-1
BW25113 was used to make the Keio Collection of single-gene knockouts. [2]
[1] Available from the Coli Genetics Stock Center: CGSC#7636
The genotype for BW25113 in Datsenko et al. [1] said the strain is lacIQ, but it was later shown to be lacI+ Baba et al. (Supplementary Table 1)[2].
According to the CGSC, lacZ4787(del) has 4 tandem copies of the rrnB transcriptional terminator inserted by gene replacement into the region extending from near the SacII site near the N-terminus of lacZ through the promoter.
References
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- ↑ 1.0 1.1 1.2 1.3 Datsenko, KA & Wanner, BL (2000) One-step inactivation of chromosomal genes in Escherichia coli K-12 using PCR products. Proc. Natl. Acad. Sci. U.S.A. 97 6640-5 PubMed
- ↑ 2.0 2.1 2.2 2.3 Baba, T et al. (2006) Construction of Escherichia coli K-12 in-frame, single-gene knockout mutants: the Keio collection. Mol. Syst. Biol. 2 2006.0008 PubMed
- ↑ Haldimann, A & Wanner, BL (2001) Conditional-replication, integration, excision, and retrieval plasmid-host systems for gene structure-function studies of bacteria. J. Bacteriol. 183 6384-93 PubMed