J Biol Chem. 1994 Aug 26;269(34):21603-7.

Specific interaction of penicillin-binding proteins 3 and 7/8 with soluble lytic transglycosylase in Escherichia coli.

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Max-Planck-Institut für Entwicklungsbiologie, Abteilung Biochemie, Tübingen, Federal Republic of Germany.

Abstract

Soluble lytic transglycosylase 70 (Slt70), one of the better characterized murein hydrolases of Escherichia coli, was covalently bound to CNBr-activated Sepharose and used as a specific tool to screen for proteins showing an affinity for Slt70. Several proteins were specifically enriched by Slt-Sepharose affinity chromatography. Two of them were identified as the penicillin-binding proteins (PBP)3 and PBP7/8. Thus, the bifunctional synthase PBP3, specifically involved in septum formation, and PBP7/8, recently shown to be a DD-endopeptidase, bind to Slt70 in vitro. In addition, PBP7/8 was found not only to stabilize but also to stimulate the enzymatic activity of Slt70 by a protein-protein interaction. It is concluded that Slt70, PBP7/8, and PBP3 may form a multienzyme complex in vivo.

PMID:: 8063800; [PubMed - indexed for MEDLINE]

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Specific interaction of penicillin-binding proteins 3 and 7/8 with soluble lytic...
Specific interaction of penicillin-binding proteins 3 and 7/8 with soluble lytic transglycosylase in Escherichia coli.
J Biol Chem. 1994 Aug 26 ;269(34):21603-7.

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