Abstract
An affinity chromatography technique was developed to isolate the five penicillin-binding components present in Bacillus subtilis membranes. The proteins were solubilized by the detergent Nonidet P-40, bound covalently to penicillin-substituted Sepharose, and subsequently eluted from the matrix with neutral hydroxylamine, which cleaves the penicilloyl-enzyme bond. Penicillin binding-component V, the D-alanine carboxypeptidase, makes up 1% of the total membrane protein. A modification of the above procedure enabled this enzyme to be obtained from the membrane in pure form in a single step with 50% overall recovery of enzymatic activity.
MeSH Terms
Alanine
Bacillus subtilis/analysis,enzymology
Bacterial Proteins/isolation & purification,metabolism
Binding Sites
Carbon Isotopes
Carboxypeptidases/isolation & purification
Cell Membrane/analysis
Chromatography
Chromatography, Affinity
Electrophoresis, Polyacrylamide Gel
Penicillin G/metabolism
Protein Binding
Chemicals
Bacterial Proteins
Carbon Isotopes
Carboxypeptidases
Alanine
Penicillin G
Authors & Affiliations
2 authors, click to expand affiliations / ORCID
Blumberg P M
Strominger J L
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25 references, click to expand
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