sidechain = Group('cyx_sidechain')
peptide = Group('peptide')
bonds = [Bond(peptide.C_alpha, sidechain.C_beta), ]
symbol = 'Cyx'
amber_charge = {sidechain.C_beta: -0.079, sidechain.H_beta_2: 0.091, peptide.H: 0.2719, peptide.O: -0.5679, peptide.H_alpha: 0.0766, peptide.C: 0.5973, sidechain.S_gamma: -0.1081, peptide.N: -0.4157, sidechain.H_beta_3: 0.091, peptide.C_alpha: 0.0429, }
name = 'cystine_ss'
chain_links = [peptide.N, peptide.C]
