Abstract:tn the preceding paper reasons were adduced for the belief that certain proteins contain a sulphur grouping other than cystine. It was shown that the uncertainty which exists with regard to the nature of the sulphur linkage is due in part to the difficulty experienced in isolating and estimating cystine. The present paper is concerned mainly with the determination of cystine and of " non-cystine " sulphur in ovalbumin.Perhaps the most striking difference between albumin derived from serum and that from egg lie… Show more
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