1.8.4.8 3'-adenylyl-sulfate + thioredoxin - 1.8.4.8 3'-phosphoadenylyl-sulfate + glutaredoxin - 1.8.4.8 3'-phosphoadenylyl-sulfate + thioredoxin - 1.8.4.8 3'-phosphoadenylyl-sulfate + thioredoxin enzyme catalyzes the first reductive step in sulfate assimilation 1.8.4.8 5-Phosphoadenosine 3-phosphosulfate + reduced thioredoxin enzyme is involved in sulfur metabolism 1.8.4.8 5-Phosphoadenosine 3-phosphosulfate + reduced thioredoxin essential step in the biosynthesis of Cys in E. coli. Blocking of the enzyme inhibits cell growth 1.8.4.8 additional information enzyme is essential for sulfate assimilation using phosphoadenosine 5'-phosphosulfate, not adenosine 5'-phosphosulfate, phylogenetic comparison of the 2 different groups, overview 1.8.4.8 additional information enzyme is involved in sulfate assimilation requiring reduced glutathione and glutaredoxins, redox regulation of the enzyme by glutathione and glutaredoxins, overview 1.8.4.8 additional information thioredoxin1 and glutaredoxin 1 are essential for sulfate reduction but not for ribonucleotide reduction