Abstract: The invention relates to a process halogenation, which comprises halogenating a chemical compound in the presence of a halogenase, where the halogenase is
(a) encoded by the sequence specified in SEQ ID NO: 1 or a sequence derived therefrom on the basis of the degeneracy of the genetic code, or is
(b) encoded by a nucleic acid sequence which codes for a functional fragment of (a) or
(c) by a sequence which hybridizes with (a) or (b) under standard conditions, or is
(d) encoded by a sequence which has more than 30% identity or more than 60% similarity with the sequence specified under (a).