C_beta = Atom('CH')
C_gamma_1 = Atom('CH3')
C_gamma_2 = Atom('CH3')
bonds = [Bond(C_gamma_1, C_beta), Bond(C_gamma_2, C_beta), ]
pdbmap = [('VAL', {'CG2': C_gamma_2, 'CB': C_beta, 'CG1': C_gamma_1, }, ), ]
amber91_atom_type = {C_gamma_2: 'C3', C_gamma_1: 'C3', C_beta: 'CH', }
name = 'val_sidechain'
