sidechain = Group('ala_sidechain_uni')
peptide = Group('peptide_uni')
bonds = [Bond(peptide.C_alpha, sidechain.C_beta), ]
symbol = 'Ala'
name = 'alanine'
chain_links = [peptide.N, peptide.C]
amber91_charge = {peptide.O: -0.5, peptide.H: 0.248, sidechain.C_beta: 0.031, peptide.C: 0.526, peptide.N: -0.52, peptide.C_alpha: 0.215, }
