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Amino acid composition (AAC)

NE Neda Emami
RF Reza Ferdousi
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AAC is a kind of protein sequence feature based on protein attributes, like folding types, secondary structure, domain, subcellular location, etc. AAC calculates the frequency of each amino acid in a protein sequence. For a protein sequence with N amino acid residues, the frequencies of each residue could be considered as follows:

N(t) is the number of amino acid type t.

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