Selection and identification of antigenic determinant of Mycobacterium tuberculosis H37Ra strain. 1992

H H Wang, and R R Huang, and P Liang, and X P Zhang, and Y H Zhuang, and Z Y Zhang
Academy of Life Sciences, Fudan University, Shanghai.

A new procedure for the selection of the antigenic determinant of Mycobacterium tuberculosis H37Ra strain is described. The bacterium components destroyed by ultrasonic were isolated by 15% SDS-PAGE, transferred onto nitrocellulose membrane, immunostained with McAbs against H37Ra. One McAb-positive fragment was obtained using the Western blot analysis. The molecular weight of the antigenic determinant is 35,000 dalton. The antigenic determinant is of immunological reactivity with McAb and TB patients' sera in dot-immunoassay and demonstrated in delayed skin tests in guinea pigs. The amino acid composition of the antigenic determinant was analysed. These suggest that the Western blot analysis may be a useful tool for the analysis of the antigenic determinant.

UI MeSH Term Description Entries
D008970 Molecular Weight The sum of the weight of all the atoms in a molecule. Molecular Weights,Weight, Molecular,Weights, Molecular
D009169 Mycobacterium tuberculosis A species of gram-positive, aerobic bacteria that produces TUBERCULOSIS in humans, other primates, CATTLE; DOGS; and some other animals which have contact with humans. Growth tends to be in serpentine, cordlike masses in which the bacilli show a parallel orientation. Mycobacterium tuberculosis H37Rv
D000596 Amino Acids Organic compounds that generally contain an amino (-NH2) and a carboxyl (-COOH) group. Twenty alpha-amino acids are the subunits which are polymerized to form proteins. Amino Acid,Acid, Amino,Acids, Amino
D000911 Antibodies, Monoclonal Antibodies produced by a single clone of cells. Monoclonal Antibodies,Monoclonal Antibody,Antibody, Monoclonal
D000939 Epitopes Sites on an antigen that interact with specific antibodies. Antigenic Determinant,Antigenic Determinants,Antigenic Specificity,Epitope,Determinant, Antigenic,Determinants, Antigenic,Specificity, Antigenic
D000942 Antigens, Bacterial Substances elaborated by bacteria that have antigenic activity. Bacterial Antigen,Bacterial Antigens,Antigen, Bacterial
D015153 Blotting, Western Identification of proteins or peptides that have been electrophoretically separated by blot transferring from the electrophoresis gel to strips of nitrocellulose paper, followed by labeling with antibody probes. Immunoblotting, Western,Western Blotting,Western Immunoblotting,Blot, Western,Immunoblot, Western,Western Blot,Western Immunoblot,Blots, Western,Blottings, Western,Immunoblots, Western,Immunoblottings, Western,Western Blots,Western Blottings,Western Immunoblots,Western Immunoblottings

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