C_beta = Atom('CH2')
C_gamma = Atom('C')
O_delta_1 = Atom('O')
O_delta_2 = Atom('O')
bonds = [Bond(C_gamma, C_beta), Bond(O_delta_1, C_gamma), Bond(O_delta_2, C_gamma), ]
pdbmap = [('ASP', {'OD2': O_delta_2, 'CG': C_gamma, 'CB': C_beta, 'OD1': O_delta_1, }, ), ]
amber_atom_type = {C_beta: 'CT', O_delta_1: 'O2', C_gamma: 'C', O_delta_2: 'O2', }
name = 'asp_sidechain'
