THE RESISTANCE OF LIVING ORGANISMS TO DIGESTION BY PEPSIN OR TRYPSIN
نویسندگان
چکیده
منابع مشابه
The Resistance of Living Organisms to Digestion by Pepsin or Trypsin
1. Pepsin and trypsin are quickly removed from solution by dead organisms. They are not able to penetrate into living organisms. 2. Trypsin injected into a living Amoeba results in the death and disintegration of the cell.
متن کاملThe Mechanism of the Influence of Acids and Alkalies on the Digestion of Proteins by Pepsin or Trypsin. By
I t has long been known that pepsin digestion occurs only in acid solution while trypsin digestion takes place in neutral or alkaline solutions. This marked influence of the reaction on the rate of hydrolysis is a characteristic property of enzymes in general. A great advance in the explanation of this phelaomenon was made by SSrensen (1) who was able to show in the case of a number of enzymes ...
متن کاملThe Mechanism of the Effect of Acids and Alkalies on the Digestion of Proteins by Pepsin or Trypsin
In a paper of the above title t the following statement was made: " . . . . the amount of acid required to bring the protein solution to a given pH is independent of the nature and valence of the anion." This statement is literally true only in the case of strong acids which the writer had in mind at the time. In the case of weak or polyvalent acids the amount required is larger the weaker the ...
متن کاملThe Mechanism of the Influence of Acids and Alkalies on the Digestion of Proteins by Pepsin or Trypsin
1. The effect of the addition of acid on the amount of ionized protein has been compared with the effect on the rate of digestion of gelatin, casein, and hemoglobin by pepsin. 2. A similar comparison has been made of the addition of alkali in the case of trypsin with gelatin, casein, hemoglobin, globin, and edestin. 3. In general, the rate of digestion may be predicted from the amount of ionize...
متن کاملCasein phosphopeptides from casein micelles by successive digestion with pepsin and trypsin.
When milk is ingested, casein micelles will be successively digested by pepsin in the stomach and trypsin in the intestine. Therefore, we digested casein micelles successively with pepsin at pH 4.0 and trypsin at pH 7.0, and recovered casein phosphopeptides (CPP) as CPP-calcium phosphate (CP) complexes. The CPP-CP complexes contained 248 mg of calcium/g peptides and 175 mg of inorganic phosphor...
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1926
ISSN: 1540-7748,0022-1295
DOI: 10.1085/jgp.9.4.497