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Glycine

physical science Maturity 11-13 Next article →

Glycine is a tiny but mighty building block for life.

Glycine-spin
Glycine-spin

It is known as the simplest stable amino acid. Amino acids are the small parts used to build proteins. Because glycine is so small, it can fit into very tight spaces. This helps it build special structures like collagen. Collagen is a protein that makes up about 35% of your body's collagen. This protein helps keep your skin and bones strong.

Glycine-protonation-states-2D-skeletal
Glycine-protonation-states-2D-skeletal

This little molecule works in many different ways inside your body. It helps create important things like heme, which is part of your blood. It also helps build DNA and RNA, the blueprints for life. In your brain and spinal cord, glycine acts as an inhibitory neurotransmitter. This means it helps regulate signals to keep them in balance. If these signals are blocked, it can cause serious problems with how the body moves. It can even help the liver clear out certain substances to keep you healthy.

People have been studying glycine for a long time. A French chemist named Henri Braconnot discovered it in 1820. He found it by boiling gelatin with sulfuric acid. At first, he called it "sugar of gelatin." Later, in 1838, Jean-Baptiste Boussingault showed it contained nitrogen. In 1847, an American scientist named Eben Norton Horsford suggested the name "glycocoll." However, a Swedish chemist named Berzelius suggested the name we use today just one year later.

There are many interesting facts about how glycine looks and acts. It is a white, sweet-tasting crystalline solid. Its name comes from the Greek word "glykys," which means sweet.

Cu(gly)2(OH2)
Cu(gly)2(OH2)

In the United States and Japan, about 15,000 tonnes are made every year using a method called Strecker synthesis. In the U.S. market, about 80 to 85 percent of glycine sold is the "USP" grade. This is a high-quality version used for medicine and health.

You can think of glycine like a versatile tool in a toolbox. Just as a small screw can hold a complex machine together, glycine helps hold proteins together. It can also act like a brake on a bicycle. When it works as a neurotransmitter, it slows down signals so the body does not get too excited. We get glycine from the food we eat, but our bodies can also make it. Scientists even make it in factories to use in things like plant medicines and food additives.

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File:Glycine-spin.gif
Glycine-spin.gif
File:Glycine-protonation-states-2D-skeletal.png
Glycine-protonation-states-2D-skeletal.png
File:Cu(gly)2(OH2).png
Cu(gly)2(OH2).png
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