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Updated: Aug 29, 2026

Preparation of the Mgm101 Recombination Protein by MBP-based Tagging Strategy
Published on: June 25, 2013
MlaA, a hexameric ATPase linked to the Mre11 complex in archaeal genomes
Angelo Manzan1, Günter Pfeiffer, Melissa L Hefferin
1Gene Center, University of Munich, D-81377 Munich, Germany.
Abstract:
We identify and characterize MlaA, a novel protein, which is found in a conserved operon with Mre11 and Rad50 in archaeal genomes. MlaA is fused with Mre11 in Methanobacter thermoautotrophicus, suggesting the MlaA is functionally linked to the Mre11 complex. MlaA preferentially and cooperatively binds double-stranded and secondary structure containing DNA and has double-stranded but not single-stranded DNA-stimulated ATPase activity. Electron microscopy reveals that MlaA forms a 360-kDa hexameric ring structure with a central hole. Our data suggest that the archaeal Mre11 complex is associated with a novel hexameric ATPase that could be required for the processing of DNA double-stranded breaks and recombination intermediates.
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