Practical physiological chemistry; a book designed for use in courses in practical physiological chemistry in schools of medicine and of science . Fig. 25.—Tyrosine. Cystine is the principal sulphur-containing body obtained from thedecomposition of protein substances. It is obtained in greatest amountas a decomposition product of keratin-containing tissues as horn, hoof,. Fig. 26.—Cystine. and hair. Cystine occurs in small amount in normal urine and isgreatly increased in quantity under certain pathological conditions. Itcrystallizes in thin, colorless, hexagonal plates which are shown in Fig.
Practical physiological chemistry; a book designed for use in courses in practical physiological chemistry in schools of medicine and of science . Fig. 25.—Tyrosine. Cystine is the principal sulphur-containing body obtained from thedecomposition of protein substances. It is obtained in greatest amountas a decomposition product of keratin-containing tissues as horn, hoof,. Fig. 26.—Cystine. and hair. Cystine occurs in small amount in normal urine and isgreatly increased in quantity under certain pathological conditions. Itcrystallizes in thin, colorless, hexagonal plates which are shown in Fig. PROTEINS 77 26. Cystine is very slightly soluble in water but its salts, with bothbases and acids, are readily soluble in water. It is levo-rotator}-. It was formerly claimed that cystine occurred in two forms, ^stone-cysdne and protein-cystine, and that these two forms are distinctin their properties. This view is incorrect. For the preparation of cystine from wool or hair see page 87. For a discussion of cystine sediments in urine see Chapter XXIV. Tryptophane, C8H6N-CH2CH(NH2)-COOH.—Recently Ellingerand Flamand have shown that tryptophane possesses the followingformula: CCH2CH(NH2)COOH
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbiochem, bookyear1916
