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- Amino acid | Definition, Structure, Facts | Britannica
Amino acid, any of a group of organic molecules that consist of a basic amino group, an acidic carboxyl group, and a unique organic side chain The term amino acid is short for α-amino [alpha-amino] carboxylic acid Examples of amino acids include glycine and threonine
- Amino acid - Building Blocks, Structure, Functions | Britannica
Amino acid - Building Blocks, Structure, Functions: One of the most useful manners by which to classify the standard (or common) amino acids is based on the polarity (that is, the distribution of electric charge) of the R group (e g , side chain)
- Structure and properties of amino acids | Britannica
amino acid, Any of a class of organic compounds in which a carbon atom has bonds to an amino group (―NH 2), a carboxyl group (―COOH), a hydrogen atom (―H), and an organic side group (called ―R) They are therefore both carboxylic acids and amines The physical and chemical properties unique to each result from the properties of the R
- Protein - Amino Acids, Structure, Function | Britannica
Although more than 100 amino acids occur in nature, particularly in plants, only 20 types are commonly found in most proteins In protein molecules the α-amino acids are linked to each other by peptide bonds between the amino group of one amino acid and the carboxyl group of its neighbor
- What is an amino acid? | Britannica - Encyclopedia Britannica
An amino acid is an organic molecule that is made up of a basic amino group (−NH 2), an acidic carboxyl group (−COOH), and an organic R group (or side chain) that is unique to each amino acid The term amino acid is short for α-amino [alpha-amino] carboxylic acid
- Protein - Amino Acids, Physicochem. | Britannica
Protein - Amino Acids, Physicochem : The physicochemical properties of a protein are determined by the analogous properties of the amino acids in it The α-carbon atom of all amino acids, with the exception of glycine, is asymmetric; this means that four different chemical entities (atoms or groups of atoms) are attached to it
- amino acid - Students | Britannica Kids | Homework Help
Chemists define an amino acid as any group of organic molecules that consist of a basic amino group (–NH 2), an acidic carboxyl group (–COOH), and a specific organic side chain that is unique to each amino acid Arginine, glycine, cystine, histidine, and tryptophan are a few examples of amino acids
- Amino acid - Origin, Life, Earth | Britannica - Encyclopedia Britannica
Amino acid - Origin, Life, Earth: The question of why organisms on Earth consist of l-amino acids instead of d-amino acids is still an unresolved riddle
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