The DOI matches its Crossref record.
Improved allelic exchange vectors and their use to analyze 987P fimbria gene expression
Open accessAbstract
A series of vectors has been developed to provide improved positive and negative selection for allelic exchange. Based on homologous regions of DNA ranging in size from less than 200 bp to over 1 kb, we have successfully used these new plasmids to introduce or remove markers in chromosomal or plasmid DNA. Wild type fimbria genes were replaced both in Salmonella enteritidis (sefA, agfA and fimC) and Escherichia coli (fasA and fasH). Regulation of 987P fimbriation could be identified after replacement of fasA and fasH with allelic reporter fusions. The expression of fasA but not fasH is dependent upon the osmolarity of the growth medium in an HNS-dependent manner, but unlike some other fimbrial systems expression is not dependent on the exogenous iron concentration.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cited by
Rhs proteins from diverse bacteria mediate intercellular competition
Koskiniemi, S., Lamoureux, J. G., Nikolakakis, K. C., t'Kint de Roodenbeke, C., Kaplan, M. D., Low, D. A., & Hayes, C. S. (2013) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1300627110 · Cited by 414
A Host-Produced Quorum-Sensing Autoinducer Controls a Phage Lysis-Lysogeny Decision
Silpe, J. E., & Bassler, B. L. (2019) · Cell · doi:10.1016/j.cell.2018.10.059 · Cited by 363
Sheshko, V., Hejnova, J., Rehakova, Z., Sinkora, J., Faldyna, M., Alexa, P., Felsberg, J., Nemcova, R., Bomba, A., & Sebo, P. (2006) · FEMS Immunology & Medical Microbiology · doi:10.1111/j.1574-695x.2006.00140.x · Cited by 15
Metadata
- Authors
- Edwards, R. A., Keller, L. H., & Schifferli, D. M.
- Venue
- Gene
- Publisher
- Elsevier BV
- Published
- 1998-01
- Volume
- 207
- Issue
- 2
- Pages
- 149-157
- ISSN
- 0378-1119 (ISSN-L)
- OpenAlex
- W2052164279
- Cited by
- 568
- References
- 0
- FWCI
- 2.73
- Type
- journal article
- Language
- en
- Open access
- hybrid
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Improved allelic exchange vectors and their use to analyze 987P fimbria gene expression. https://app.cochat.ai/papers/10.1016/s0378-1119(97)00619-7
- The paper
- Edwards, R. A., Keller, L. H., & Schifferli, D. M. (1998). Improved allelic exchange vectors and their use to analyze 987P fimbria gene expression. Gene. https://doi.org/10.1016/s0378-1119(97)00619-7
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
