Dynamic evolution of selenocysteine utilization in bacteria: a balance between selenoprotein loss and evolution of selenocysteine from redox active cysteine residues

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Yan Zhang, Hector Romero, Gustavo Salinas and Vadim N Gladyshev^*

Genome Biology 2006, 7:R94 doi:10.1186/gb-2006-7-10-r94