sidechain = Group('cys_sidechain_uni')
peptide = Group('peptide_ct_uni')
bonds = [Bond(peptide.C_alpha, sidechain.C_beta), ]
symbol = 'Cys'
amber91_charge = {sidechain.S_gamma: 0.827, sidechain.H_gamma: 0.135, peptide.C: 0.444, sidechain.LP_1: -0.481, peptide.O: -0.706, peptide.O_2: -0.706, sidechain.C_beta: 0.1, peptide.N: -0.52, peptide.C_alpha: 0.14, sidechain.LP_2: -0.481, peptide.H: 0.248, }
name = 'cysteine'
chain_links = [peptide.N, None]
