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Purification and properties of penicillin-binding proteins 5 and 6 from Escherichia coli membranes
Journal of Biological Chemistry
Penicillin-binding proteins (PBPs) 5 and 6 in the cytoplasmic membranes of Escherichia coli K12, which had previously been co-purified as a penicillin-sensitive D-alanine carboxypeptidase IA (Tamura, T., Imae, Y., and Strominger, J. L. (1976) J. Biol. Chem. 251, 414-423), were each purified to protein homogeneity. Purification involved selective solubilization of PBPs 1a, 5, and 6 from membranes by Triton X-100 at low ionic strength, covalent penicillin affinity chromatography, and CM-cellulosepmid:7002918 fatcat:47ag2ei745dvxjhlbhndtrosdm