Helicobacter pylori, and this organism has all of the known bacterial nickel transport systems (reviewed by Nies, 1999). Nickel urease function is essential for the colonization of gastric mucosa by RND-type transporters ( Liesegang et al, 1993 Schmidt and Schlegel, 1994)Īnd evidence suggests that excess nickel in Staphylococcus aureus is bound by polyphosphate Nickel resistance in some bacteria is based on nickel efflux via HoxN-type permeases (reviewed by Eitinger and Mandrand-Berthelot, 2000). High-affinity nickel transport in bacteria occurs via ABC-type transporters and Non-specific nickel influx occurs via the CorA system in bacteria and Saccharomyces cerevisiae Microorganisms (reviewed by Watt and Ludden, 1999). Nickel transport and homeostatic mechanisms have been studied in a variety of Isomerase (reviewed by Watt and Ludden, 1999). Since 1975, six more nickel-containing enzymes haveīeen discovered in bacteria and/or archaea: hydrogenase, methyl-S-coenzyme M reductase,Ĭarbon monoxide dehydrogenase, nickel superoxide dismutase, glyoxylase I, and a putative nickel cis-trans Recent work has demonstrated that bacterial urease also contains Only since 1975, when urease was shown to be a nickel enzyme ( Dixon et al, 1975).Īlthough the source of the urease in that study was jack bean, The role of nickel in biological systems has been appreciated Like cobalt, it is less available to biological systems than ThisĮlement composes only 0.008% of the Earth's crust and thus, Nickel is often found in biological compounds as Ni(II).
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