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Glycine
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A metabolic pathway diagram for Escherichia coli showing how various nutrients-including sugars, fats, glycerol, and amino acids-are broken down into intermediates like pyruvate and acetyl-CoA, leading to the production of energy and other metabolites such as lactate, glutamate, and succinate. Arrows indicate the flow of metabolites between compounds, with key nutrient sources and products highlighted in colored boxes. A line graph shows the electrometric titration of glycine, plotting pH on the x-axis against the volume of acid or base added on the y-axis. Red dots mark experimental data points, with the curve showing sharp pH changes near the isoelectric point at pH 6.1 and buffer regions below pH 3 and above pH 8. Explanatory text is included on the right. Diagram showing three glycine molecules undergoing a condensation reaction to form a tripeptide chain, with two water molecules released as byproducts.
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Glycine

amino acid
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Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....
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Glycine, the simplest amino acid, obtainable by hydrolysis of proteins. Sweet-tasting, it was among the earliest amino acids to be isolated from gelatin (1820). Especially rich sources include gelatin and silk fibroin. Glycine is one of several so-called nonessential amino acids for mammals; i.e., they can synthesize it from the amino acids serine and threonine and from other sources and do not require dietary sources. The chemical structure of glycine is

glycine, chemical compound

This article was most recently revised and updated by Erik Gregersen.