sidechain = Group('pro_sidechain_uni')
peptide = Group('peptide_proline_ct_uni')
bonds = [Bond(peptide.C_alpha, sidechain.C_beta), Bond(peptide.N, sidechain.C_delta), ]
symbol = 'Pro'
amber91_charge = {peptide.C_alpha: 0.112, sidechain.C_delta: 0.084, peptide.O_2: -0.706, peptide.C: 0.444, sidechain.C_gamma: 0.03, sidechain.C_beta: -0.001, peptide.N: -0.257, peptide.O: -0.706, }
name = 'proline'
chain_links = [peptide.N, None]
