although fraction b ( which was prepared by gel filtration to exclude gsh and gssg ) had no intrinsic 5'-di activity , could not stimulate microsomal 5'-di activity in the absence of added thiol and did not contain gsh as a mixed disulphide , it could produce a 3-fold increase in the maximal deiodinase activity achievable with dtt as well as other thiols , with the order being the same as the activation potency of these thiols in the absence of fraction b ( i.e . dhla greater than dtt greater than 2-me greater than gsh ) .
C0061516
gssg
C0017817
gsh