title: Structural features and the persistence of acquired proteins.
mesh_terms: D002942:Circular Dichroism; D004926:Escherichia coli / Q000235:genetics* / Q000378:metabolism; D029968:Escherichia coli Proteins / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism; D019143:Evolution, Molecular; D015964:Gene Expression Regulation, Bacterial; D005798:Genes, Bacterial; D016680:Genome, Bacterial; D016366:Open Reading Frames / Q000235:genetics*; D010802:Phylogeny; D011487:Protein Conformation; D017510:Protein Folding; D017433:Protein Structure, Secondary
chemical_list: D029968:Escherichia coli Proteins