What is the structure of amino acid?
Amino acids have a two-carbon bond. One of the carbons is part of a group called the carboxyl group (COO-). A carboxyl group is made up of one carbon (C) and two oxygen (O) atoms. That carboxyl group has a negative charge, since it is a carboxylic acid (-COOH) that has lost its hydrogen (H) atom.
Amino acid, any of a group of organic molecules that consist of a basic amino group (−NH2), an acidic carboxyl group (−COOH), and an organic R group (or side chain) that is unique to each amino acid.
- Formula of the 20 common amino acids. The formula of an amino acid comprises, bound to a carbon (alpha carbon): a carboxyl group -COOH. an amine group -NH2.
- Within a protein, multiple amino acids are linked together by peptide bonds, thereby forming a long chain. Proteins are built from a set of only twenty amino acids, each of which has a unique side chain. The side chains of amino acids have different chemistries.
- The building blocks of protein. Each has an amine group at one end, an acid group at the other, and a distinctive side chain. The unique chemical structure attached to the backbone of each amino acid that differentiates one amino acid from another. Also called Indespensable amino acids.
All amino acids include five basic parts:
- a central carbon atom.
- a hydrogen atom.
- an amino group - consisting of a nitrogen atom and two hydrogen atoms.
- a carboxyl group - consisting of a carbon atom, two oxygen atoms, and one hydrogen atom.
- an R-group or side chain - consisting of varying atoms.
- Proteins are composed of molecules called amino acids, and each amino acid contains four elements: hydrogen, oxygen, nitrogen and carbon. Some might also contain a fifth element, sulfur.
- Nucleic acids also typically contain phosphorous, and nitrogen plays an important structural role in nucleic acids and proteins. The proteins, being made up a diverse set of amino acids, have, in addition to carbon, hydrogen, oxygen, and nitrogen, the elements sulfur and selenium.
- Amino acids have a two-carbon bond. One of the carbons is part of a group called the carboxyl group (COO-). A carboxyl group is made up of one carbon (C) and two oxygen (O) atoms. That carboxyl group has a negative charge, since it is a carboxylic acid (-COOH) that has lost its hydrogen (H) atom.
The precise amino acid content, and the sequence of those amino acids, of a specific protein, is determined by the sequence of the bases in the gene that encodes that protein. The chemical properties of the amino acids of proteins determine the biological activity of the protein.
- Amino acids are the structural units (monomers) that make up proteins. They join together to form short polymer chains called peptides or longer chains called either polypeptides or proteins. These polymers are linear and unbranched, with each amino acid within the chain attached to two neighboring amino acids.
- Amino acid supplements are most often associated with bodybuilders. After all, muscle consists of protein, and amino acids do help build muscle, and not just in young men. But individual amino acids also serve a variety of health-promoting roles in the body.
- 20 amino acids
Updated: 2nd October 2018