Identification and characterization of a 14-kilodalton Brucella abortus protein reactive with antibodies from naturally and experimentally infected hosts and T lymphocytes from experimentally infected BALB/c mice.
A low-molecular-weight recombinant Brucella abortus protein reactive with antibodies from a variety of naturally and experimentally infected hosts and T lymphocytes from experimentally infected mice was identified and given the designation BA14K. The gene encoding BA14K was cloned and characterized, and the predicted amino acid sequence of this immunoreactive protein showed no significant homology with previously described proteins. Sequences homologous to the cloned fragment encoding BA14K were identified by Southern blot analysis of genomic DNAs from representatives of all of the currently recognized Brucella species. Studies employing BA14K should contribute to our efforts to better understand the antigenic specificity of protective immunity to brucellosis.
Department of Microbiology and Immunology, Louisiana State University Medical Center, Shreveport, Louisiana 71130-3932, USA.
R L
RL
Chirhart-Gilleland
M E
ME
Kovach
P H
PH
Elzer
S R
SR
Jennings
R M
RM
Roop
D000595:Amino Acid Sequence; D000818:Animals; D000907:Antibodies, Bacterial / Q000276:immunology; D000942:Antigens, Bacterial / Q000235:genetics* / Q000276:immunology; D001425:Bacterial Outer Membrane Proteins / Q000235:genetics*; D001426:Bacterial Proteins / Q000235:genetics* / Q000276:immunology; D001483:Base Sequence; D002003:Brucella abortus / Q000235:genetics* / Q000276:immunology; D002006:Brucellosis / Q000276:immunology*; D004269:DNA, Bacterial; D004195:Disease Models, Animal; D005260:Female; D051379:Mice; D008807:Mice, Inbred BALB C; D008969:Molecular Sequence Data; D011994:Recombinant Proteins / Q000235:genetics*; D013601:T-Lymphocytes / Q000276:immunology*
D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial; C113736:BA14K protein, Brucella; D001425:Bacterial Outer Membrane Proteins; D001426:Bacterial Proteins; D004269:DNA, Bacterial; D011994:Recombinant Proteins