Review Article
Mechanisms of Metal Resistance and Homeostasis in Haloarchaea
Table 1
Various inorganic complexes formed in natural waters, seawater, estuarine waters (variable salinity), and hypersaline waters. As haloarchaea inhabit hypersaline environments where inorganic ligands predominate, inorganic metal speciation is described. The availability of metal depends upon the kind of inorganic complex formed. Lipophilic soluble chlorocomplexes of Hg and Ag are easily available in hypersaline waters. Insoluble (precipitated) ZnCl2 and CuCl2 are unavailable to the organism. Fe (II), Co (II), Ni (II), and Mn (II) form weak complexes with Cl− that easily dissociate and can be taken up by organisms [28, 41–46].
|