Unlike SmallMolecule.feature and .notFeature, SmallMoleculeReference.entityFeature biopax property has no range restriction defined in the BioPAX L3 OWL. It probably should have the same feature restriction as for SmallMolecule, i.e., range: only BindingFeature.
Also, we probably should have modelled a different binding feature for small molecules and sequences to be clearer (we tended to pressure ourselves to reduce class number).
Unlike SmallMolecule.feature and .notFeature, SmallMoleculeReference.entityFeature biopax property has no range restriction defined in the BioPAX L3 OWL. It probably should have the same feature restriction as for SmallMolecule, i.e., range: only BindingFeature.
Also, we probably should have modelled a different binding feature for small molecules and sequences to be clearer (we tended to pressure ourselves to reduce class number).