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Zn, Cu and Co in cyanobacteria: Selective control of metal availability

Lookup NU author(s): Dr Jennifer Cavet, Dr Gilles Borrelly, Professor Nigel Robinson

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Abstract

Homeostatic systems for essential and non-essential metals create the cellular environments in which the correct metals are acquired by metalloproteins while the incorrect ones are somehow avoided. Cyanobacteria have metal requirements often absent from other bacteria; copper in thylakoidal plastocyanin, zinc in carboxysomal carbonic anhydrase, cobalt in cobalamin but magnesium in chlorophyll, molybdenum in heterocystous nitrogenase, manganese in thylakoidal water-splitting oxygen-evolving complex. This article reviews: an intracellular trafficking pathway for inward copper supply, the sequestration of surplus zinc by metallothionein (also present in other bacteria) and the detection and export of excess cobalt. We consider the influence of homeostatic proteins on selective metal availability. © 2003 Federation of European Microbiological Societies. Published by Elsevier Science B.V. All rights reserved.


Publication metadata

Author(s): Cavet JS, Borrelly GPM, Robinson NJ

Publication type: Review

Publication status: Published

Journal: FEMS Microbiology Reviews

Year: 2003

Volume: 27

Issue: 2-3

Pages: 165-181

ISSN (print): 0168-6445

ISSN (electronic): 1574-6976

URL: http://dx.doi.org/10.1016/S0168-6445(03)00050-0

DOI: 10.1016/S0168-6445(03)00050-0

PubMed id: 12829266


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