460 MERA_SERMA MTHLKITGMTCDSCAAHVKEALEKVPGVQSAIVSYAKGAAQLALDPGTAPDALTAAVAGLGYKAMLADAPPTDNRTGLFDKVRGWMGAADKGSGAERPLQVAVIGSGGAAMAAALKAVEQGAQVTLIERGTIGGTCVNVGCVPSKIMIRAAHIAHLRRESPFDGGMPPTPPTILRERLLAQQQARVEELRHAKYEGILDGNSAITVRHGEARFKDDRDLSVSLNEGGERVVMFDRCLVATGASPAMPPIPGLKESPYWTSTEALVSDTIPERLAVIGSSVVALELAQAFARLGSQVTILARNTLFFRDDPSIGEAVTAAFRAEGIKVLEHTQASQVAHVNGEDPQVATVGYSEAEAHHDGIETDSRTLTLDNVPRALANFDTRGFIKLVIEEGSGRLIGVQVVAPEAGELIQTAVLAIRNRMTVQELADQLFPYLTMVEGLKLAAQTFTKDVKQLSCCAG merA Hg(II) reductase Mercuric reductase (Fragment) Resistance to Hg(2+) in bacteria appears to be governed by a specialized system which includes mercuric reductase. MerA protein is responsible for volatilizing mercury as Hg(0).