Amino acid distribution
Amino acids are the basic components
of proteins. The amino acid distribution in a protein is simply the
percentage of the different amino acids represented in a particular
protein of interest. Amino acid composition is generally conserved
through family-classes in different organisms which can be useful
when studying a particular protein or enzymes across species
borders. Another interesting observation is that amino acid
composition variate slightly between proteins from different
subcellular localizations. This fact has been used in several
computational methods, used for prediction of subcellular
localization.