Source: image from the National Human Genome Research Institute (NHGRI)
Genetic Illustrations.
Definitions
A protein is a large complex molecule made up of one or
more chains of amino acids. Proteins perform a wide variety of
activities in the cell.
Amino acids are a group of 20 different kinds of small
molecules that link together in long chains to form proteins.
Often referred to as the "building blocks" of proteins.
Source: definitions from the National Human Genome Research Institute (NHGRI)
Glossary of Genetic Terms.
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Amino Acid Abbreviations
A complete list of amino acids and their corresponding IUPAC (International Union of Pure and Applied Chemistry) single letter and three letter abbreviations is available
in "Appendix V: Controlled Vocabularies" of the DDBJ/EMBL/GenBank
Feature Table.
