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Infect Immun. May 1989; 57(5): 1427–1431.
PMCID: PMC313294
Purification and partial characterization of a type-specific antigen of Rickettsia tsutsugamushi.
N Ohashi, A Tamura, M Ohta, and K Hayashi
Department of Microbiology, Niigata College of Pharmacy, Japan.
A type-specific antigen (54- to 56-kilodalton polypeptide) in the envelope of Rickettsia tsutsugamushi was purified from each of three prototype strains (Gilliam, Karp, and Kato) by a combination of mild anionic detergent treatment, gel filtration, and reverse-phase high-performance liquid chromatography. The purified antigens from the three strains were shown to have similar amino acid compositions: primarily aspartic acid, glutamic acid, and glycine, with lesser amounts of cysteine, methionine, and tyrosine. The N-terminal amino acid sequences of the antigens were 74.3% homologous among the three strains.
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