sidechain = Group('pro_sidechain_noh')
peptide = Group('peptide_proline_nt_noh')
bonds = [Bond(peptide.C_alpha, sidechain.C_beta), Bond(peptide.N, sidechain.C_delta), ]
symbol = 'Pro'
amber_charge = {sidechain.C_beta: -0.115, sidechain.C_gamma: -0.121, peptide.C_alpha: 0.1, sidechain.C_delta: -0.012, peptide.O: -0.5, peptide.N: -0.202, peptide.C: 0.526, }
name = 'proline'
chain_links = [None, peptide.C]
