FIG 4 .
Purification of 4-F-BzCoA reducing activity and identification of 4-F-BCR as BCR. The highly enriched enzyme after gel filtration was composed of the four subunits of class I BCR (BcrABCD). The BzCoA-dearomatizing activity and 4-F-BzCoA-defluorinating activity coeluted after all purification steps with an almost constant ratio of dearomatizing/defluorinating activity as indicated by the values presented below the gel.