has component has constituent monomer Usage note: The constituent monomers need not be covalently attached in an end-to-end manner; that is, polymers with internal connections (e.g., polyubiquitin) can use this relation, as can circular polymers (e.g., plasmids) and multi-branched polymers (e.g., glycans). This relation, as non-transitive, allows the number of instances of 'm' to be indicated. An amino acid chain has_constituent_monomer at least two amino acid residues. A polyubiquitin has_constituent_monomer some ubiquitin. A relation that holds between a polymer and its constituent monomers. P has_constituent_monomer 'm' if and only if P has_component multiple instances of 'm' and each instance of 'm' is covalently attached to another instance of 'm'. Darren A. Natale