This radical SAM (AdoMet) enzyme is part of the C-P lyase complex, which is responsible for processing phophonates into usable phosphate. Contains an [4Fe-4S] cluster. The enzyme from the bacterium?Escherichia coli?can act on additional ¦Á-D-ribose phosphonate substrates with different substituents attached to the phosphonate phosphorus (e.g. ¦Á-D-ribose-1-[N-(phosphonomethyl)glycine]-5-phosphate and ¦Á-D-ribose-1-(2-N-acetamidomethylphosphonate)-5-phosphate).