Enzymic Degradation of Pectic Acid Part XI

Enzymic degradation of heparin.

A sulphamidase and a sulphoesterase were isolated from adapted cells of Flavobacterium heparinum. These enzymes were partially purified from the 'heparinases' present in the bacterial extracts and characterized. The sulphamidase has a high specificity for glucosamine N-sulphate and glucosamine 2,6-disulphate. The activity decreases sharply with increasing molecular weight ofthe substrates teste...

The Enzymic Degradation of Adenosinetriphosphate

Hume, E. M. & Krebs, H. A. (1949). Spec. Rep. Ser. med. Res. Coun., Lond., No. 264. Husain, M. A. & Mathur, C. B. (1936). Indian J. Agric. Sci. VI, 591. Karrer, P. & Wiirgler, E. (1943). Hdv. chim. Acta. 26, 118. Kuhn, R. & Lederer, E. (1933). Ber. dtech. chm. Gee.66,488. Lederer, E. (1935). Les Carotenoide de Animaux. Paris: Hermann. McCay, C. M. (1938). Phy8iol. Zool. 11, 89. Mann, T. B. (194...

Hæmatological Technique. Part XI

Observations of Ascorbic Acid. Part XI. Therapeutic Effect of Ascorbic Acid in Tuberculosis

on the therapeutic effect of the adequate amounts of ascorbic acid intake on human tuberculosis. The results are inconclusive mainly due to the inadequate use of controls and unsatisfactory criteria of watching the progress of the disease. The approach used by Radford, de Savitsch and Sweany (1937) and Kaplan and Zonnis (1940) meets the above objections admirably. In the present study, we were ...

Pectic Acid Lyases of Bacillus polymyxa 1

Four enzymes were separated from an extracellular preparation of Bacillus polymyxa by carboxymethylcellulose column chromatography. The pH optima were 8.3 to 8.5, 8.7 to 8.9, 9.2 to 9.4, and 9.5 to 9.6. All of the enzymes required calcium ion for maximum activity, whereas strontium ion was only partially effective in stimulating activity. Cobalt was the only other cation tested which was effect...