sidechain = Group('ala_sidechain_noh')
peptide = Group('peptide_noh')
bonds = [Bond(peptide.C_alpha, sidechain.C_beta), ]
symbol = 'Ala'
amber_charge = {peptide.N: -0.4157, peptide.C_alpha: 0.0337, peptide.C: 0.5973, sidechain.C_beta: -0.1825, peptide.O: -0.5679, }
name = 'alanine'
chain_links = [peptide.N, peptide.C]
