3D amino acid structure 3D Amino Acids - Augmented Reality Amino acids are organic compounds that contain amino[a] (−NH+3) and carboxylic acid (−CO2H) functional groups, along with a side chain (R group) specific to each amino acid. The elements present in every amino acid are carbon (C), hydrogen (H), oxygen (O), and nitrogen (N) (CHON). In addition sulfur (S) is present in the side chains of cysteine and methionine, and selenium (Se). Abstract The amino acid sequence of a protein is the key to understanding its structure and ultimately its function in the cell. This paper addresses the fundamental issue of encoding amino acids in ways that the representation of such a protein sequence facilitates the decoding of its information content. We show that a feature-based representation in a three-dimensional (3D) space derived from amino acid substitution matrices provides an adequate representation that can be used for direct comparison of protein sequences based on geometry. We measure ...
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