Adenosine Triphosphatases 2 Bacteria (microorganisms) 2 Bacterial Proteins 2 Base Pair Mismatch 2 Binding Sites 2 DNA 2 DNA Repair 2 DNA repair 2 DNA structure 2 DNA, Bacterial 2 DNA-Binding Proteins 2 Helicobacter 2 Helicobacter pylori 2 MutS DNA Mismatch-Binding Protein 2 Recombination, Genetic 2 article 2 bacterial protein 2 controlled study enzyme activity genetic variability 2 mismatch repair 2 nonhuman 2 protein MSH2 2 protein purification 2 sequence homology 2