-
Tryptophan 7-
halogenase (EC 1.14.19.9, PrnA, RebH) is an
enzyme with
systematic name L-tryptophan:FADH2
oxidoreductase (7-halogenating). This
enzyme catalyses...
- synthase. This is
followed by
chlorination of the aryl
moiety by the
halogenase TiaM and
methylation of the OH-C(2’)
position of
rhamnose by the methyltransferase...
- and
released by the
thioesterase Vhp. The
timing of the
chlorination by
halogenase VhaA
during biosynthesis is undetermined, but is
proposed to
occur before...
- one of
three groups, A, B or C.
Halogenases of the same
class are
genetically similar, but
differ greatly from
halogenases from a
different group. Currently...
-
contains two
chlorinated positions, 2 (3-Cl-Tyr) and 6 (3-Cl-β-Hty). The
halogenase Tei8* has been acts to
catalyze the
halogenation of both
tyrosine residues...
-
vitro halogenation and RebF (a
flavin reductase) to
provide FADH2 for the
halogenase. RebO (a
tryptophan oxidase) then deaminates,
after which it is further...
-
plants construct these molecules.
Insertion of new enzymes, for
example a
halogenase or
oxidase results in
novel variants of the
molecules not
found in nature...
-
premature chlorotonil A core is
chlorinated twice by CtoA, a flavin-dependent
halogenase. The
halogenated core is then
methylated by the
standalone SAM-dependent...
- ACP2, or ACP3.
subsequent enzymes,
including a
unique heme
independent halogenase (HaI)
catalyze the
formation of a
cyclopropyl ring. A
cysteine specific...
- Walsh, C. T., Drennan, C. L., "Crystal
structure of the non-haem iron
halogenase SyrB2 in
syringomycin biosynthesis",
Nature 2006, 440, 368. doi:10.1038/nature04544...
