title: Letter: Hybrid tetramers of alkaline phosphatase.
mesh_terms: D000469:Alkaline Phosphatase; D002247:Carbon Isotopes; D002499:Centrifugation, Density Gradient; D004926:Escherichia coli / Q000201:enzymology; D005796:Genes; D006824:Hybridization, Genetic; D006863:Hydrogen-Ion Concentration; D008961:Models, Structural; D009587:Nitrogen Isotopes; D011108:Polymers; D011485:Protein Binding; D011487:Protein Conformation
chemical_list: D002247:Carbon Isotopes; D009587:Nitrogen Isotopes; D011108:Polymers; D000469:Alkaline Phosphatase