C_beta = Atom('CH2')
C_delta = Atom('CH2')
C_gamma = Atom('CH2')
bonds = [Bond(C_gamma, C_delta), Bond(C_beta, C_gamma), ]
pdbmap = [('PRO', {'CD': C_delta, 'CB': C_beta, 'CG': C_gamma, }, ), ]
pdb_alternative = {'HG1': '3HG', 'HD3': '1HD', 'HB1': '3HB', }
amber91_atom_type = {C_delta: 'C2', C_gamma: 'C2', C_beta: 'C2', }
opls_atom_type = {C_delta: 'CQ', C_gamma: 'C2', C_beta: 'C2', }
opls_charge = {C_delta: .285, C_gamma: 0.0, C_beta: 0.0, }
name = 'pro_sidechain'
