ABSTRACT
The transition metal ions including cobalt, copper, iron, manganese, nickel, and zinc are essential for the viability of cyanobacteria as well as many other organisms. Cellular trace elements are required for the structure and function of many molecules essential for life including proteins and nucleic acids [1]. Metal ions are involved in a range of essential processes in particular enzyme functions where they are required for catalysis or may act as catalytic cofactors, for example, in reversible oxidation-reduction and hydrolytic reactions [2,3]. Individual metal ions may perform multiple biochemical roles or may be limited to just one role.
