FEATURES

FAMILY

DESCRIPTION

Also known as PRNA_PSEFL, prnA. Involved in the biosynthesis of the antifungal antibiotic pyrrolnitrin. Catalyzes the chlorination of tryptophan (Trp) at C7 position to yield 7-chloro-L-tryptophan (7-CLT). The reaction between FADH2, Cl-, and O2 generates the powerful oxidant HOCl, which is presumed to carry out the chlorination reaction. The reaction of HOCl with the active site Lys-79 generates a lysine chloramine, which plays a key role in directing regiospecific chlorination of substrate in this important class of biosynthetic enzymes. It is also able to use bromide ions to generate monobrominated Trp. Homodimer.

EXTERNAL LINKS

uniprot
enzyme classification

prnA

Flavin-dependent tryptophan halogenase PrnA

prnA

Molecular Synopsis