English: Protein sequence space can be represented as a space with n dimensions, where n is the number of amino acids in the protein. Each axis has 20 positions representing the 20 amino acids. There are 400 possible 2 amino acid proteins (dipeptide) which can be arranged in a 2D grid. the 8000 tripeptides can be arranged in a 3D cube. There are an astronomical number of longer protein sequences which are arranged in large, multidimensional spaces.
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[[w:Protein|Protein]] sequence space can be represented as a space with n [[w:dimensions|dimensions]], where n is the number of [[w:amino acid|amino acid]]s in the protein