Journal:
Article Title: Prevalence of, Antibody Response to, and Immunity Induced by Haemophilus ducreyi Hemolysin
doi:
Figure Lengend Snippet: Identification of H. ducreyi isolates, detection of homology to hemolysin genes, and phenotypic expression of hemolysin in geographically and temporally diverse isolates of H. ducreyi. (A to C) Spot blots of H. ducreyi and other Haemophilus species probed with whole-cell DNA from H. ducreyi type strain CIP 542 (A), the hhdB gene (B), and the hhdA gene (C). Strains and species analyzed: top row, CIP542, 35000, LA228R, CF101, V-1168, V149/91, V-180, HMC56, CHIA, and V-1157; bottom row, H. influenzae Rd, H. parainfluenzae, H. aphrophilus, H. paraphrophilus, H. segmis, A. pleuropneumoniae, H. haemoglobinophiles, T. equigenitalis, H. haemolyticus, and H. influenzae ATCC 33911. (D) Hemolysis of H. ducreyi isolates on HBAPs. Isolates on HBAPs correspond to those in the top rows of panels A to C except strain 35000-KmA, the right-most strain in panel D, which was added as a nonhemolytic control. The photographs of the Southern blots and the HBAP were scanned with a Microtek Scanner III and captured with a Micrografx Picture Publisher (Micrografx, Richardson, Tex.).
Article Snippet: E. coli BL21(DE3) Host for protein expression Novagen, Madison, Wis. H. aphrophilus ATCC 33389 Arnold Smith H. ducreyi 35000-TcA Strain 35000 with Tn 916 inserted in hhdB , nonhemolytic 50 H. ducreyi 35000-KmA Strain 35000 with Tn 1545-Δ3 inserted in hhdB , nonhemolytic 50 H. ducreyi 35000ΔAPC Strain 35000 with cat cassette in hhdA gene, nonhemolytic 54 H. haemoglobinophilus ATCC 19416 ATCC, Manassas, Va. H. haemolyticus ATCC 33390 Arnold Smith H. influenzae ATCC 33911 Arnold Smith H. influenzae Rd Marilyn Roberts H. parainfluenzae ATCC 33392 Arnold Smith H. paraphrophilus ATCC 29237 Arnold Smith H. segmis ATCC 33393 Arnold Smith T. equigenitalis ATCC 35865 Arnold Smith Plasmids pUC19 E. coli cloning vector, Ap r GibcoBRL pCR2.1 TA cloning vector for cloning PCR products, Amp r Kan r Invitrogen, San Diego, Calif. pET24+ Expression plasmid with C-terminal His tag sequence and inducible T7 promoter, no translation initiation signals, Kan r Novagen pET24a+ Expression plasmid with C-terminal His tag sequence and inducible T7 promoter, Kan r Novagen pBCKS Cm r plasmid derived from pUC19 with KS multiple cloning site Stratagene, La Jolla, Calif. pPT384-ETa hhdBA genes cloned into pET24a+ Sst I- Sal I This study pLSSK Shuttle vector with ori , sulA , and strA genes from pLS88 and multiple cloning sites and lacZ gene from pBluescript SK 54 pPT384 hhdBA gene region in pTZ18 in same orientation as lac promoter 50 pPT376BCKS 5.8-kb Bgl II fragment containing part of hhdB and all of hhdA cloned into pBCKS Sst I- Sal I 50 pETBABN hhdBA genes cloned into pET24+ Bam HI- Sal I This study pLSBAHis+ hhdBA genes cloned into pLSSK in same orientation as lac promoter.
Techniques: Expressing