>4ZN0_1|Chains A, B, C, D|Thioredoxin reductase|Methanosarcina mazei (192952) GSHMASMYDLIIIGGGPAGLTAGIYAVRYGLDTLILERNEISGQISMADIVENYPGFPSISGLELMERFRTHAQEVGVKTTITEVLSVRSEGTKKIITTDSGDLEAKAVIIATGANPKHLGVPGEKELISKGVSYCAICDGPFFRNKIVAVVGGGNSAVTDALFLSKVAQKVYLVHRRDHLKAARVLQDRVDGTPNIELILNSHVLEIVGTREGIKKVEKIILEDVNSRETRELSTNGVFIYVGIHPNTEFVDVEKDEGGFIKTDRWMETSEKGIYAAGDCRDTPIWQLVTAVRDGAIAATAAYEYIEKIR