sidechain = Group('asp_sidechain_uni')
peptide = Group('peptide_ct_uni')
bonds = [Bond(peptide.C_alpha, sidechain.C_beta), ]
symbol = 'Asp'
amber91_charge = {sidechain.O_delta_2: -0.706, sidechain.C_beta: -0.208, sidechain.O_delta_1: -0.706, peptide.H: 0.248, peptide.O_2: -0.706, peptide.N: -0.52, peptide.C: 0.444, sidechain.C_gamma: 0.62, peptide.O: -0.706, peptide.C_alpha: 0.24, }
name = 'aspartic_acid'
chain_links = [peptide.N, None]
