The Oxidation of Trypsin and Pepsin by Periodate
نویسندگان
چکیده
منابع مشابه
Quantitative Determination of Dihydrostreptomycin by Periodate Oxidation.
Dihydrostreptomycin is produced commercially by the catalytic hydrogenation of streptomycin. The reaction involves the reduction of the aldehyde group in the streptose moiety of the streptomycin molecule to the corresponding primary carbinol group as evidenced by the failure of dihydrostreptomycin to react with carbonyl reagents or with alkali to produce maltol. As there are no chemical methods...
متن کاملThe Spreading of Pepsin and of Trypsin
The pepsin was obtained in the form of a 5 per cent solution in glycerol (1 cc. containing 50 rag. of pepsin). I t was diluted tenfold before use with 0.01 s hydrochloric acid (pH 2). 5 ram. 8 were blown out of a calibrated micropipette on the surface of the water in a Langmuir tray according to the method which we have used for several years. Effect of pH.--The effect of pH on the amount of th...
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Danilewski described the formation of a protein-like substance when pepsin was added to a concentrated peptic digest of proteins. The subject has since been carefully investigated by a number of workers, especially Henriques and Gjaldb~ck and Wasteneys and Borsook. The latter authors have reviewed the work in detail (Wasteneys and Borsook, 1930). There is no doubt that some sort of a synthetic ...
متن کاملOxidation of hydroxy-L-proline by periodate.
Some time ago Carter and Neville reported (1) that hydroxy-n-proline yields formaldehyde on oxidation with periodate. In another laboratory, this oxidation was found to produce a considerably lower yield of formaldehyde than we had obtained.’ A further study of this reaction was accordingly undertaken. Oxidation of several new samples of hydroxy-L-proline gave lower yields of formaldehyde than ...
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چکیده هدف از این کار بررسی الکترواکسیداسیون کتکول و مشتقات آن در حضور 4-فنیل سمی کاربامازید بوده است اکسیداسیون کتکولها ترکیبات نا پایدار کینونها را تولید می کنند که این ترکیبات می تواند در واکنش مایکل بعنوان پذیرنده نوکلئوفیل عمل نمایند. در ادامه اکسایش کتکولهای (a-c1) را درحضور 4-فنیل سمی کاربامازید در محلول آب/استونیتریل (90/10)بوسیله ولتامتری چرخه ای و کولن متری در پتانسیل ثابت مورد بررسی ...
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ژورنال
عنوان ژورنال: Journal of the agricultural chemical society of Japan
سال: 1956
ISSN: 0002-1407,1883-6844
DOI: 10.1271/nogeikagaku1924.30.4_183