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. 2019 Nov 12;65(5):1010–1027. doi: 10.1002/lno.11366

Figure 1.

Figure 1

Conceptual summary of the biological and chemical interplays affecting HgII methylation in the environment. Orange boxes and arrows refer to geochemical variables directly affecting microbial activity and Hg speciation. Purple boxes refer to Hg chemical forms. The red arrow indicates the transformation of HgII to CH3Hg+. Blue refers to a compendium of metabolic processes occurring in the environment, among these processes HgII methylation carried out by the hgcAB gene cluster.