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Proteins consist of one or more chains of amino acids, linked together by peptide bonds. There are 20 naturally occurring amino acids that make up the building blocks of proteins. Shorter chains of amino acids, generally less than 50, are called peptides. Insulin for example, consists of 51 amino acids, and is therefore borderline a peptide and a protein.金沙官网app投注

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    AstraZeneca is one of the world’s most exciting bio-pharmaceutical companies. Be inspired by the possibilities of science to make a difference and discover what you can do.


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    We know that innovation doesn’t happen in isolation, so we partner with others to access the best science and contribute complementary technologies, know-how and molecules.