Is amino acid and alpha-amino acid the same? ^_^?

Question

Is amino acid and alpha-amino acid the same? ^_^?

Answer 1

The standard amino acids found in proteins are all alpha amino acids. But non-standard amino acids exist.

In biochemistry, this term refers to alpha-amino acids with the general formula H2NCHRCOOH, where R is an organic substituent. In the alpha amino acids, the amino and carboxylate groups are attached to the same carbon, which is called the α–carbon. The various alpha amino acids differ in which side chain (R group) is attached to their alpha carbon. They can vary in size from just a hydrogen atom in glycine through a methyl group in alanine to a large heterocyclic group in tryptophan.

Aside from the twenty standard amino acids, there are a vast number of "non-standard" amino acids. Examples of nonstandard amino acids that are not found in proteins include lanthionine, 2-aminoisobutyric acid, dehydroalanine and the neurotransmitter gamma-aminobutyric acid.

Answer 2

yes alpha amino acid and  amino acid is one and the same .The chiral carbon atom that is the alpha carbon has r group , carboxylic group and amino group along with a hydrohen atom. In case of proline the alpha amino group is secondary.

Answer 3

Yes

Amino acids are the basic structural units of proteins. An alpha-amino acid consists of an amino group, a carboxyl group, a hydrogen atom, and a distinctive R group bonded to a carbon atom, which is called the alpha-carbon because it is adjacent to the carboxyl (acidic) group. An R group is referred to as a side chain.