Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2010-2-19
pubmed:abstractText
Autotransporters (AT) are widespread in Gram-negative bacteria, and many of them are involved in virulence. An open reading frame (APECO1_O1CoBM96) encoding a novel AT was located in the pathogenicity island of avian pathogenic Escherichia coli (APEC) O1's virulence plasmid, pAPEC-O1-ColBM. This 3.5-kb APEC autotransporter gene (aatA) is predicted to encode a 123.7-kDa protein with a 25-amino-acid signal peptide, an 857-amino-acid passenger domain, and a 284-amino-acid beta domain. The three-dimensional structure of AatA was also predicted by the threading method using the I-TASSER online server and then was refined using four-body contact potentials. Molecular analysis of AatA revealed that it is translocated to the cell surface, where it elicits antibody production in infected chickens. Gene prevalence analysis indicated that aatA is strongly associated with E. coli from avian sources but not with E. coli isolated from human hosts. Also, AatA was shown to enhance adhesion of APEC to chicken embryo fibroblast cells and to contribute to APEC virulence.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1098-5522
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
78
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
898-906
pubmed:dateRevised
2010-9-2
pubmed:meshHeading
pubmed-meshheading:20028805-Animals, pubmed-meshheading:20028805-Antibodies, Bacterial, pubmed-meshheading:20028805-Bacterial Adhesion, pubmed-meshheading:20028805-Bacterial Outer Membrane Proteins, pubmed-meshheading:20028805-Cell Membrane, pubmed-meshheading:20028805-Cells, Cultured, pubmed-meshheading:20028805-Chickens, pubmed-meshheading:20028805-Cytoplasm, pubmed-meshheading:20028805-Escherichia coli, pubmed-meshheading:20028805-Escherichia coli Infections, pubmed-meshheading:20028805-Escherichia coli Proteins, pubmed-meshheading:20028805-Fibroblasts, pubmed-meshheading:20028805-Gene Deletion, pubmed-meshheading:20028805-Genetic Complementation Test, pubmed-meshheading:20028805-Genomic Islands, pubmed-meshheading:20028805-Humans, pubmed-meshheading:20028805-Microscopy, Fluorescence, pubmed-meshheading:20028805-Molecular Weight, pubmed-meshheading:20028805-Plasmids, pubmed-meshheading:20028805-Poultry Diseases, pubmed-meshheading:20028805-Protein Sorting Signals, pubmed-meshheading:20028805-Protein Structure, Tertiary, pubmed-meshheading:20028805-Virulence, pubmed-meshheading:20028805-Virulence Factors
pubmed:year
2010
pubmed:articleTitle
AatA is a novel autotransporter and virulence factor of avian pathogenic Escherichia coli.
pubmed:affiliation
Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, 1802 University Blvd., Iowa State University, Ames, IA 50011, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't