- 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
After they are incorporated into a peptide, the individual amino acids are referred to as amino acid residues Small polymers of amino acids (fewer than 50) are called oligopeptides, while larger ones (more than 50) are referred to as polypeptides
- What is an amino acid? | 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
- 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 (―NH2), a carboxyl group (―COOH), a hydrogen atom (―H), and an organic side group (called ―R)
- Codon | Definition, Function, Examples | Britannica
An example of a codon is the sequence AUG, which specifies the amino acid methionine The AUG codon, in addition to coding for methionine, is found at the beginning of every messenger RNA (mRNA) and indicates the start of a protein
- Amino acid - Origin, Life, Earth | Britannica
A protein is a naturally occurring, extremely complex substance that consists of amino acid residues joined by peptide bonds Proteins are present in all living organisms and include many essential biological compounds such as enzymes, hormones, and antibodies
- Protein | Definition, Structure, Classification | Britannica
A protein is a naturally occurring, extremely complex substance that consists of amino acid residues joined by peptide bonds Proteins are present in all living organisms and include many essential biological compounds such as enzymes, hormones, and antibodies
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