sidechain = Group('pro_sidechain')
peptide = Group('peptide_proline_ct')
bonds = [Bond(peptide.C_alpha, sidechain.C_beta), Bond(peptide.N, sidechain.C_delta), ]
symbol = 'Pro'
amber_charge = {sidechain.H_delta_2: 0.0331, sidechain.H_beta_2: 0.0381, sidechain.C_delta: 0.0434, peptide.C_alpha: -0.1336, peptide.N: -0.2802, sidechain.C_beta: -0.0543, sidechain.H_gamma_2: 0.0172, sidechain.H_beta_3: 0.0381, sidechain.C_gamma: 0.0466, peptide.H_alpha: 0.0776, sidechain.H_gamma_3: 0.0172, sidechain.H_delta_3: 0.0331, peptide.O_2: -0.7697, peptide.O: -0.7697, peptide.C: 0.6631, }
name = 'proline'
chain_links = [peptide.N, None]
