Journal
PLOS ONE
Volume 9, Issue 7, Pages -Publisher
PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0099820
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Funding
- NIH [R01AI075093, R21AI083964, R01AI083646, R56AI077645]
- NIAID [HHSN272200900040C]
- Binational Agricultural Research Development Fund
- Center for Produce Safety at UC Davis
- AFRI CSRESS United States Department of Agriculture [2009-03579]
- FONDECYT [1110172, 1140754]
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We constructed two collections of targeted single gene deletion (SGD) mutants and two collections of targeted multi-gene deletion (MGD) mutants in Salmonella enterica sv Typhimurium 14028s. The SGD mutant collections contain (1), 3517 mutants in which a single gene is replaced by a cassette containing a kanamycin resistance (Kan(R)) gene oriented in the sense direction (SGD-K), and (2), 3376 mutants with a chloramphenicol resistance gene (Cam(R)) oriented in the antisense direction (SGD-C). A combined total of 3773 individual genes were deleted across these SGD collections. The MGD collections contain mutants bearing deletions of contiguous regions of three or more genes and include (3), 198 mutants spanning 2543 genes replaced by a Kan(R) cassette (MGD-K), and (4), 251 mutants spanning 2799 genes replaced by a Cam(R) cassette (MGD-C). Overall, 3476 genes were deleted in at least one MGD collection. The collections with different antibiotic markers permit construction of all viable combinations of mutants in the same background. Together, the libraries allow hierarchical screening of MGDs for different phenotypic followed by screening of SGDs within the target MGD regions. The mutants of these collections are stored at BEI Resources (www.beiresources.org) and publicly available.
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