ISDA: 4NK3

Deposition Date 2013-11-12

Release Date 2014-02-19

Last Version Date 2024-11-27

Entry Detail

PDB ID:

4NK3

Keywords:

HYDROLASE/HYDROLASE INHIBITOR

Title:

Amp-c beta-lactamase (pseudomonas aeruginosa) in complex with mk-7655

Biological Source:

Source Organism:

Pseudomonas aeruginosa (Taxon ID: 208964)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.90 Å

R-Value Free:

0.21

R-Value Work:

0.17

R-Value Observed:

0.17

Space Group:

P 21 21 21

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Beta-lactamase
Gene (Uniprot):ampC
Mutagens:R397A
Chain IDs:A
Chain Length:375
Number of Molecules:1
Biological Source:Pseudomonas aeruginosa

UniProt ID:P24735 Pfam ID:PF00144

Ligand Molecules

MK7

Primary Citation

Discovery of MK-7655, a beta-lactamase inhibitor for combination with Primaxin().

Blizzard, T.A, Chen, H, Kim, S, Wu, J, Bodner, R, Gude, C, Imbriglio, J, Young, K, Park, Y.W, Ogawa, A, Raghoobar, S, Hairston, N, Painter, R.E, Wisniewski, D, Scapin, G, Fitzgerald, P, Sharma, N, Lu, J, Ha, S, Hermes, J, Hammond, M.L.Show

Bioorg.Med.Chem.Lett. 24 780 785 (2014)

PMID: 24433862 DOI: 10.1016/j.bmcl.2013.12.101

Abstact

β-Lactamase inhibitors with a bicyclic urea core and a variety of heterocyclic side chains were prepared and evaluated as potential partners for combination with imipenem to overcome class A and C β-lactamase mediated antibiotic resistance. The piperidine analog 3 (MK-7655) inhibited both class A and C β-lactamases in vitro. It effectively restored imipenem's activity against imipenem-resistant Pseudomonas and Klebsiella strains at clinically achievable concentrations. A combination of MK-7655 and Primaxin® is currently in phase II clinical trials for the treatment of Gram-negative bacterial infections.

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Primary Citation of related structures