Reaction catalyzed by phosphoadenylyl-sulfate reductase (thioredoxin) (1.8.4.8)

+

thioredoxin TrxH3

=

+

+

thioredoxin TrxH3 disulfide

3'-phosphoadenylyl sulfate

+

thioredoxin TrxH3

=

adenosine 3',5'-bisphosphate

+

sulfite

+

thioredoxin TrxH3 disulfide