sidechain = Group('asp_sidechain')
peptide = Group('peptide')
bonds = [Bond(peptide.C_alpha, sidechain.C_beta), ]
symbol = 'Asp'
amber_charge = {peptide.C: 0.5366, peptide.H_alpha: 0.088, peptide.O: -0.5819, sidechain.H_beta_3: -0.0122, sidechain.H_beta_2: -0.0122, peptide.N: -0.5163, sidechain.O_delta_1: -0.8014, sidechain.C_gamma: 0.7994, sidechain.O_delta_2: -0.8014, peptide.H: 0.2936, peptide.C_alpha: 0.0381, sidechain.C_beta: -0.0303, }
name = 'aspartic_acid'
chain_links = [peptide.N, peptide.C]
