def add_residue(structure, residue, phi=-120, psi_im1=140, omega=-370):
    '''Adds a residue to chain A model 0 of the given structure, and
    returns the new structure. The residue to be added can be specified
    in two ways: either as a geometry object (in which case
    the remaining arguments phi, psi_im1, and omega are ignored) or as a
    single-letter amino-acid code. In the latter case, the optional
    arguments phi, psi_im1, and omega specify the corresponding backbone
    angles.
    
    When omega is specified, it needs to be a value greater than or equal
    to -360. Values below -360 are ignored.''' 
    
    if isinstance( residue, Geo ):
        geo = residue
    else:
        geo=geometry(residue) 
        geo.phi=phi
        geo.psi_im1=psi_im1
        if omega>-361:
            geo.omega=omega
    
    add_residue_from_geo(structure, geo)
    return structure
def add_residue ( structure , residue , phi = - 120 , psi_im1 = 140 , omega = - 370 ) : if isinstance ( residue , Geo ) : geo = residue else : geo = geometry ( residue ) geo . phi = phi geo . psi_im1 = psi_im1 if omega > - 361 : geo . omega = omega add_residue_from_geo ( structure , geo ) return structure
Adds a residue to chain A model 0 of the given structure, and
    returns the new structure. The residue to be added can be specified
    in two ways: either as a geometry object (in which case
    the remaining arguments phi, psi_im1, and omega are ignored) or as a
    single-letter amino-acid code. In the latter case, the optional
    arguments phi, psi_im1, and omega specify the corresponding backbone
    angles.
    
    When omega is specified, it needs to be a value greater than or equal
    to -360. Values below -360 are ignored.