from these results , together with previous knowledge of this enzyme , it was concluded that it activated bromide anion ( br- ) to bromonium cation ( br+ ) using one molecule of h2o2 , and this br+oh- formed at the active site then decomposed another h2o2 to yield o2 in the absence of halogen acceptors ( substrate ) .
C0006222
bromide
C0003075
anion