1.8.4.8 4Fe-4S-center the enzyme harbors a [4Fe-4S]2+ cluster 712502 1.8.4.8 glutaredoxin - 659214 1.8.4.8 glutaredoxin glutaredoxin 1 variant 659441 1.8.4.8 glutaredoxin in vitro, variant Grx1 is active similar to the thioredoxins, while Grx2 and Grx3 are not active, and a mutant form Grx1C14S is a poor cofactor 659140 1.8.4.8 thioredoxin - 393953, 659214 1.8.4.8 thioredoxin 2 variants Trx1 and Trx2, equally active 659140 1.8.4.8 thioredoxin dependent on 698950 1.8.4.8 thioredoxin thioredoxin 1 variant 659441