sidechain = Group('cys_sidechain_noh')
peptide = Group('peptide_ct_noh')
bonds = [Bond(peptide.C_alpha, sidechain.C_beta), ]
symbol = 'Cys'
amber_charge = {peptide.O: -0.7981, peptide.C: 0.7497, sidechain.S_gamma: -0.3102, peptide.O_2: -0.7981, peptide.C_alpha: -0.1635, sidechain.C_beta: -0.1996, peptide.N: -0.3821, }
name = 'cysteine'
chain_links = [peptide.N, None]
