5AO7

Crystal Structure of SltB3 from Pseudomonas aeruginosa in complex with NAG-anhNAM-pentapeptide

Summary for 5AO7

• Entry DOI: 10.2210/pdb5ao7/pdb
• Related: 5ANZ 5AO8
• Descriptor: SOLUBLE LYTIC TRANSGLYCOSYLASE B3, CALCIUM ION, 2-(2-ACETYLAMINO-4-HYDROXY-6,8-DIOXA-BICYCLO[3.2.1]OCT-3-YLOXY)-PROPIONIC ACID, ... (7 entities in total)
• Functional Keywords: transferase, lytic transglycosilase, cell wall recycling
• Biological source: PSEUDOMONAS AERUGINOSA
• Total number of polymer chains: 1
• Total formula weight: 46034.47

Authors

Dominguez-Gil, T.,Hermoso, J.A. (deposition date: 2015-09-09, release date: 2016-07-20, Last modification date: 2024-01-10)

Primary citation

Lee, M.,Dominguez-Gil, T.,Hesek, D.,Mahasenan, K.V.,Lastochkin, E.,Hermoso, J.A.,Mobashery, S.
Turnover of Bacterial Cell Wall by Sltb3, a Multidomain Lytic Transglycosylase of Pseudomonas Aeruginosa.
Acs Chem.Biol., 11:1525-, 2016

PubMed Abstract: A family of 11 lytic transglycosylases in Pseudomonas aeruginosa, an opportunistic human pathogen, turn over the polymeric bacterial cell wall in the course of its recycling, repair, and maturation. The functions of these enzymes are not fully understood. We disclose herein that SltB3 of P. aeruginosa is an exolytic lytic transglycosylase. We characterize its reaction and its products by the use of peptidoglycan-based molecules. The enzyme recognizes a minimum of four sugars in its substrate but can process a substrate comprised of a peptidoglycan of 20 sugars. The ultimate product of the reaction is N-acetylglucosamine-1,6-anhydro-N-acetylmuramic acid. The X-ray structure of this enzyme is reported for the first time. The enzyme is comprised of four domains, arranged within an annular conformation. The polymeric linear peptidoglycan substrate threads through the opening of the annulus, as it experiences turnover.

PubMed: 27035839
DOI: 10.1021/ACSCHEMBIO.6B00194

Experimental method

X-RAY DIFFRACTION (2.09 Å)