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methionine-R-sulfoxide reductase This model describes a domain found in PilB, a protein important for pilin expression, N-terminal to a domain coextensive to with the known peptide methionine sulfoxide reductase (MsrA), a protein repair enzyme, of E. coli. Among the early completed genomes, this module is found if and only if MsrA is also found, whether N-terminal to MsrA (as for Helicobacter pylori), C-terminal (as for Treponema pallidum), or in a separate polypeptide. Although the function of this region is not clear, an auxiliary function to MsrA is suggested. [Protein fate, Protein modification and repair, Cellular processes, Adaptations to atypical conditions]
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Jiyao W et al.(2023). "The conserved domain database in 2023.",