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Date: 29-9-2021
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Insulin Structure
Insulin is composed of 51 amino acids arranged in two polypeptide chains, designated A (21 amino acids) and B, which are linked together by two disulfide bonds (Fig. 1 A). The insulin molecule also contains an intramolecular disulfide bond between amino acid residues of the A chain.
[Note: Insulin was the first peptide for which the primary structure was determined and the first therapeutic molecule made by recombinant DNA technology .]
Figure 1: A. Structure of insulin. B. Formation of human insulin from preproinsulin. S-S = disulfide bond.
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دراسة يابانية لتقليل مخاطر أمراض المواليد منخفضي الوزن
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اكتشاف أكبر مرجان في العالم قبالة سواحل جزر سليمان
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المجمع العلمي ينظّم ندوة حوارية حول مفهوم العولمة الرقمية في بابل
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