There has been a recent increase in the number of reported cases of tuberculosis (TB), an old scourge and still the leading cause of death among infectious diseases. In addition, multidrug resistant strains of Mycobacterium tuberculosis, the bacterium that causes TB, have been isolated. Approximately one-third of the world's population harbors M. tuberculosis, and the World Heath Organization (WHO) predicts that by the year 2005, TB will kill 4 million people per year. In the process of screening for strain-specific antibodies, as well as developing subunit vaccines and efficient diagnostic tests, many murine monoclonal antibodies (MAbs) have been generated against various mycobacterial antigens. Using these MAbs and recombinant DNA techniques, genes of more than a dozen mycobacterial antigens have been cloned. Interestingly, several of these major antigens have sequence homologies to the conserved heat shock proteins. The 16 kDa protein carries epitopes restricted to tubercle bacilli (i.e., M. tuberculosis, M. africanum, and M. bovis) on the basis of B-cell recognition and is effective for diagnostic uses. This antigen, which is capable of generating cell-mediated immune responses, also contains T-cell epitopes which are cross-reactive with M. leprae antigens. It is the cell-mediated immune system which plays the dominant role in mycobacterial immunity. We used cryomicroscopy and image processing to reveal that this oligomeric antigen forms trimer of trimer.

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Biotechnology Resource Grants (P41)
Project #
5P41RR002250-11
Application #
5223866
Study Section
Project Start
Project End
Budget Start
Budget End
Support Year
11
Fiscal Year
1996
Total Cost
Indirect Cost
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Ebeida, Mohamed S; Rushdi, Ahmad A; Awad, Muhammad A et al. (2016) Disk Density Tuning of a Maximal Random Packing. Comput Graph Forum 35:259-269
Wensel, Theodore G; Zhang, Zhixian; Anastassov, Ivan A et al. (2016) Structural and molecular bases of rod photoreceptor morphogenesis and disease. Prog Retin Eye Res 55:32-51
Baker, Mariah R; Fan, Guizhen; Serysheva, Irina I (2015) Single-Particle Cryo-EM of the Ryanodine Receptor Channel in an Aqueous Environment. Eur J Transl Myol 25:4803
Rushdi, Ahmad A; Mitchell, Scott A; Bajaj, Chandrajit L et al. (2015) Robust All-quad Meshing of Domains with Connected Regions. Procedia Eng 124:96-108
Edwards, John; Daniel, Eric; Pascucci, Valerio et al. (2015) Approximating the Generalized Voronoi Diagram of Closely Spaced Objects. Comput Graph Forum 34:299-309
Wensel, Theodore G; Gilliam, Jared C (2015) Three-dimensional architecture of murine rod cilium revealed by cryo-EM. Methods Mol Biol 1271:267-92
Jeter, Cameron B; Patel, Saumil S; Morris, Jeffrey S et al. (2015) Oculomotor executive function abnormalities with increased tic severity in Tourette syndrome. J Child Psychol Psychiatry 56:193-202
Zhang, Qin; Cha, Deukhyun; Bajaj, Chandrajit (2015) Quality Partitioned Meshing of Multi-Material Objects. Procedia Eng 124:187-199
Baker, Mariah R; Fan, Guizhen; Serysheva, Irina I (2015) Single-particle cryo-EM of the ryanodine receptor channel in an aqueous environment. Eur J Transl Myol 25:35-48

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