API Physical and chemical properties

get_area_buried(molecular_system[, element, ...])	Average area buried per residue group upon protein folding.
get_atomic_radius(molecular_system[, ...])	Atomic radius for each selected atom.
get_buried_fraction(molecular_system[, ...])	Fraction of residues observed in a buried environment.
get_charge(molecular_system[, element, ...])	Electric charge for the selected elements.
get_hydrophobicity(molecular_system[, ...])	Hydrophobicity index per residue group from a reference scale.
get_mass(molecular_system[, element, ...])	Total mass of the selected elements.
get_polarity(molecular_system[, element, ...])	Polarity index per residue group from a reference scale.
get_sasa(molecular_system[, element, ...])	Solvent-accessible surface area (SASA) per atom or residue group.
get_surface_area(molecular_system[, ...])
get_transmembrane_tendency(molecular_system)	Transmembrane tendency index per residue group.
get_volume(molecular_system[, selection, ...])	Side-chain volume per residue group from a reference scale.