sidechain = Group('cys_sidechain')
peptide = Group('peptide_ct')
bonds = [Bond(peptide.C_alpha, sidechain.C_beta), ]
symbol = 'Cys'
amber_charge = {sidechain.H_gamma: 0.2068, peptide.O_2: -0.7981, peptide.N: -0.3821, peptide.H_alpha: 0.1396, peptide.C_alpha: -0.1635, peptide.O: -0.7981, sidechain.S_gamma: -0.3102, sidechain.C_beta: -0.1996, peptide.H: 0.2681, sidechain.H_beta_3: 0.1437, peptide.C: 0.7497, sidechain.H_beta_2: 0.1437, }
name = 'cysteine'
chain_links = [peptide.N, None]
