PMID- 23382825 OWN - NLM STAT- MEDLINE DCOM- 20130904 LR - 20240318 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 8 IP - 1 DP - 2013 TI - Chaperone-usher fimbriae of Escherichia coli. PG - e52835 LID - 10.1371/journal.pone.0052835 [doi] LID - e52835 AB - Chaperone-usher (CU) fimbriae are adhesive surface organelles common to many Gram-negative bacteria. Escherichia coli genomes contain a large variety of characterised and putative CU fimbrial operons, however, the classification and annotation of individual loci remains problematic. Here we describe a classification model based on usher phylogeny and genomic locus position to categorise the CU fimbrial types of E. coli. Using the BLASTp algorithm, an iterative usher protein search was performed to identify CU fimbrial operons from 35 E. coli (and one Escherichia fergusonnii) genomes representing different pathogenic and phylogenic lineages, as well as 132 Escherichia spp. plasmids. A total of 458 CU fimbrial operons were identified, which represent 38 distinct fimbrial types based on genomic locus position and usher phylogeny. The majority of fimbrial operon types occupied a specific locus position on the E. coli chromosome; exceptions were associated with mobile genetic elements. A group of core-associated E. coli CU fimbriae were defined and include the Type 1, Yad, Yeh, Yfc, Mat, F9 and Ybg fimbriae. These genes were present as intact or disrupted operons at the same genetic locus in almost all genomes examined. Evaluation of the distribution and prevalence of CU fimbrial types among different pathogenic and phylogenic groups provides an overview of group specific fimbrial profiles and insight into the ancestry and evolution of CU fimbriae in E. coli. FAU - Wurpel, Daniel J AU - Wurpel DJ AD - Australian Infectious Diseases Research Centre, School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland, Australia. FAU - Beatson, Scott A AU - Beatson SA FAU - Totsika, Makrina AU - Totsika M FAU - Petty, Nicola K AU - Petty NK FAU - Schembri, Mark A AU - Schembri MA LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130130 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (CfaC protein, E coli) RN - 0 (Escherichia coli Proteins) RN - 0 (Molecular Chaperones) SB - IM MH - Escherichia coli/*genetics/metabolism MH - Escherichia coli Proteins/*genetics MH - Evolution, Molecular MH - Fimbriae, Bacterial/genetics/*metabolism MH - Genome, Bacterial MH - Molecular Chaperones/*genetics/metabolism MH - Phylogeny PMC - PMC3559732 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2013/02/06 06:00 MHDA- 2013/09/05 06:00 PMCR- 2013/01/30 CRDT- 2013/02/06 06:00 PHST- 2012/08/31 00:00 [received] PHST- 2012/11/22 00:00 [accepted] PHST- 2013/02/06 06:00 [entrez] PHST- 2013/02/06 06:00 [pubmed] PHST- 2013/09/05 06:00 [medline] PHST- 2013/01/30 00:00 [pmc-release] AID - PONE-D-12-26484 [pii] AID - 10.1371/journal.pone.0052835 [doi] PST - ppublish SO - PLoS One. 2013;8(1):e52835. doi: 10.1371/journal.pone.0052835. Epub 2013 Jan 30.