Manganese ions bacterial

Biooxidation by cometabolization with methane or ammonium Removal by ferrous or manganese ions produced by bacterial reduction of Fe(III) and Mn(IV)... 

In addition to health concerns, the presence of metal ions in water can bring about side effects such as bad taste, increase in turbidity and coloration, staining of fixtures in contact with water, and the like. Iron and manganese ions may also promote bacterial growth with its concomitant drawbacks (e.g., foul smell). Fortunately many methods of treatment are available, as discussed in Chapter 10. 

The major difference between the bacterial system and photosystem 11 is the source of the electrons that are used to neutralize the positive charge tormed on the special pair, P680, a very strong oxidant, extracts electrons from water molecules bound at the manganese center. d"he structure of this center includes a calcium ion and four manganese ions. Manganese was apparently evolutionarily selected for this role because of its ability to exist in multiple oxidation states (Mn, Mn ", Mn, Mn ) and to form strong... 

A number of bacterial metal transporters belong to the family of ATP-binding cassette (ABC) transporter system (see Metallochaperones Metal Ion Homeostasis) These systems constitute one of the most abundant superfamilies of proteins. They are involved in the transport of a wide variety of substances and in many cellular processes. The zinc transporter ZnuA from E. Coli and Synechocystis sp. 6803, the proposed zinc transporter TroA from Treponema pallidum, and the proposed manganese transporter Streptococcus pneumoniae surface antigen, PsaA, are placed in cluster 9 of the ABC transporters. ... 

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