title: Expression of type 1 fimbriae and mannose-sensitive hemagglutinin by recombinant plasmids.
abstract: Deletions within the cloned genes (fimA) encoding the type 1 major fimbrial subunits of two isolates of Klebsiella pneumoniae resulted in a nonfimbriate but hemagglutinating phenotype after transformation of Escherichia coli HB101 or ORN103. Phenotypic expression of type 1 fimbriae could be restored by transformation with plasmids containing the fimA genes of the fimbrial gene clusters from different strains. The surface fimbriae expressed were serologically identical to those of the polymerized product of the introduced fimA gene. The fimA gene products of Salmonella typhimurium and Serratia marcescens could utilize the accessory fimbrial genes of K. pneumoniae to produce surface-associated, hemagglutinating fimbriae. The relatedness of the type 1 fimbrial gene clusters from multiple isolates of members of the family Enterobacteriaceae was examined by DNA hybridization techniques. These analyses demonstrated little nucleotide sequence agreement among distinct genera of the enteric bacteria.
authors.affiliation: Department of Microbiology, University of Iowa, Iowa City 52242.
authors.forename: G F
authors.initials: GF
authors.lastname: Gerlach
authors.forename: S
authors.initials: S
authors.lastname: Clegg
authors.forename: N J
authors.initials: NJ
authors.lastname: Ness
authors.forename: D L
authors.initials: DL
authors.lastname: Swenson
authors.forename: B L
authors.initials: BL
authors.lastname: Allen
authors.forename: W A
authors.initials: WA
authors.lastname: Nichols
mesh_terms: D001422:Bacterial Adhesion; D004755:Enterobacteriaceae / Q000235:genetics* / Q000502:physiology / Q000648:ultrastructure; D010861:Fimbriae, Bacterial / Q000648:ultrastructure*; D005816:Genetic Complementation Test; D006388:Hemagglutinins / Q000235:genetics*; D008358:Mannose; D008854:Microscopy, Electron; D009693:Nucleic Acid Hybridization; D010957:Plasmids; D015183:Restriction Mapping; D012689:Sequence Homology, Nucleic Acid
chemical_list: D006388:Hemagglutinins; D008358:Mannose