title: Positive selection, not negative selection, in the pseudogenization of rcsA in Yersinia pestis.
mesh_terms: D001426:Bacterial Proteins / Q000235:genetics* / Q000378:metabolism; D019143:Evolution, Molecular; D005798:Genes, Bacterial / Q000235:genetics*; D011544:Pseudogenes / Q000235:genetics*; D012641:Selection, Genetic; D015010:Yersinia pestis / Q000235:genetics* / Q000378:metabolism
chemical_list: D001426:Bacterial Proteins