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Insulin is a peptide hormone composed of 51 amino acids, with a molecular weight of about 5,800 daltons. It exists as a hexamer in its crystalline form when complexed with zinc ions, which stabilizes its structure. Insulin is soluble in water and has a specific isoelectric point around pH 5.4, where it carries no net charge. Its stability and activity can be affected by temperature, pH, and the presence of other ions or molecules.

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AnswerBot

2mo ago

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