Immunoprecipitation Studies of Mycobacterial Catalase

Studies on the Inactivation of Catalase Iii. Destruction of Catalase by Hydrogen Peroxide by Sergius Morgulis

Studies on the Effect of Temperature on the Catalase Reaction. Ii. Loss of Catalase Activity

In the preceding paper (1) the possibility of spontaneous inactivation of the enzyme by heat has been mentioned as a factor responsible for the diminished catalase activity, especially at temperatures above 20°C. To determine to what extent this may have played a r61e in the experiments at different temperatures, the activity of catalase subjected for various lengths of time to the influence of...

postnatal studies of bats (pipistrellus kuhlii and miniopterus schreibersii) & histomorphology and histochemistry studies of organs and diseases of (neurergus microspilotus and n. kaiseri)

1. to determine whether difference in birth body mass influenced growth performance in pipistrellus kuhlii we studied a total of 12 captive-born neonates. bats were assigned to two body mass groups: light birth body mass (lbw: 0.89 ± 0.05, n=8) and heavy birth body mass (hbw: 1.35 ± 0.08, n=4). heavier body mass at birth was associated with rapid postnatal growth (body mass and forearm length) ...

Mycobacterial FurA is a negative regulator of catalase-peroxidase gene katG.

In several bacteria, the catalase-peroxidase gene katG is under positive control by oxyR, a transcriptional regulator of the peroxide stress response. The Mycobacterium tuberculosis genome also contains sequences corresponding to oxyR, but this gene has been inactivated in the tubercle bacillus because of the presence of multiple mutations and deletions. Thus, M. tuberculosis katG and possibly ...

T cell responses to mycobacterial catalase-peroxidase profile a pathogenic antigen in systemic sarcoidosis.

Sarcoidosis is a systemic granulomatous disease associated with local epithelioid granulomas, CD4(+) T cells, and Th1 cytokines. The tissue Ags that drive this granulomatous inflammation are uncertain. In this study, we used IFN-gamma-ELISPOT assays and flow cytometry to assess lung and blood T cell responses to the candidate pathogenic Ag, Mycobacterium tuberculosis catalase-peroxidase (mKatG)...