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The PE/PPE multigene family codes for approximately 10% of the Mycobacterium tuberculosis proteome and is encoded by 176 open reading frames. These proteins possess, and have been named after, the conserved proline-glutamate (PE) or proline-proline-glutamate (PPE) motifs at their N-terminus. Their genes have a conserved structure and repeat motifs that could be a potential source of antigenic variation...
Consumption has been a scourge of mankind since ancient times. This illness has charged a high price to human lives. Many efforts have been made to defeat Mycobacterium tuberculosis (Mt). The M. tuberculosis purine nucleoside phosphorylase (MtPNP) is considered an interesting target to pursuit new potential inhibitors, inasmuch it belongs to the purine salvage pathway and its activity might be involved...
Low temperature EPR spectroscopy was used to characterise Mycobacterium tuberculosis catalase-peroxidase in its resting ferric haem state. Several high spin ferric haem forms and no low spin forms were found in the enzyme samples frozen in methanol on dry ice. The EPR spectra depended not only on the pH but also on the buffer type. As a general trend, the higher the pH, the greater the ‘rhombic’ fraction...
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