C_beta = Atom('CH2')
C_delta_1 = Atom('CH3')
C_delta_2 = Atom('CH3')
C_gamma = Atom('CH')
bonds = [Bond(C_gamma, C_beta), Bond(C_delta_1, C_gamma), Bond(C_delta_2, C_gamma), ]
pdbmap = [('LEU', {'CD2': C_delta_2, 'CD1': C_delta_1, 'CG': C_gamma, 'CB': C_beta, }, ), ]
pdb_alternative = {'HB1': '3HB', }
name = 'leu_sidechain'
opls_atom_type = { C_beta: 'C2', C_gamma: 'CZ', C_delta_1: 'C3', C_delta_2: 'C3'  }
opls_charge = { C_beta: 0.0, C_gamma: 0.0, C_delta_1: 0.0, C_delta_2: 0.0  }
amber91_atom_type = {C_delta_2: 'C3', C_gamma: 'CH', C_beta: 'C2', C_delta_1: 'C3', }
