Reaction catalyzed by thioredoxin:protein disulfide reductase (1.8.4.16)
[HelX protein] carrying a disulfide bond
+
=
[HelX protein] with reduced L-cysteine residues
+
[HelX protein] carrying a disulfide bond
+
thioredoxin
=
[HelX protein] with reduced L-cysteine residues
+
thioredoxin disulfide