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Transcription. 2012 May-Jun;3(3):115-8. doi: 10.4161/trns.19887.

Multiple active centers of multi-subunit RNA polymerases.

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  • 1Centre for Bacterial Cell Biology, Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK.

Abstract

The active center of multi-subunit RNA polymerase consists of two modules, the Mg(2+) module, holding the catalytic Mg(2+) ion, and a module made of a flexible domain, the Trigger Loop. Uniquely, the TL module can be substituted by alternative modules, thus changing the catalytic properties of the active center.

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