sidechain = Group('asp_sidechain_neutral')
peptide = Group('peptide')
bonds = [Bond(peptide.C_alpha, sidechain.C_beta), ]
symbol = 'App'
amber_charge = {peptide.C: 0.59730, peptide.H_alpha: 0.08640, peptide.O: -0.56790, sidechain.H_beta_3: 0.04880, sidechain.H_beta_2: 0.04880, peptide.N: -0.41570, sidechain.O_delta_1: -0.55540, sidechain.C_gamma: 0.64620, sidechain.O_delta_2: -0.63760, peptide.H: 0.27190, peptide.C_alpha: 0.03410, sidechain.C_beta: -0.03160, sidechain.H_delta_2: 0.47470}
name = 'aspartic_acid_neutral'
chain_links = [peptide.N, peptide.C]
