9ENW | pdb_00009enw

Apo GES-1 beta-Lactamase

• PDB DOI: https://doi.org/10.2210/pdb9ENW/pdb

• Classification: ANTIMICROBIAL PROTEIN
• Organism(s): Klebsiella pneumoniae
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2024-03-13 Released: 2025-03-26 
• Deposition Author(s): Beer, M., Hinchliffe, P., Spencer, J.
• Funding Organization(s): Biotechnology and Biological Sciences Research Council (BBSRC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.66 Å
• R-Value Free: 
  0.251 (Depositor), 0.253 (DCC) 
• R-Value Work: 
  0.202 (Depositor), 0.203 (DCC) 
• R-Value Observed: 
  0.205 (Depositor) 

Starting Model: experimental

Literature

Apo GES-1 beta-Lactamase

Beer, M., Hinchliffe, P., Spencer, J.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 63.42 kDa 
• Atom Count: 4,564 
• Modeled Residue Count: 526 
• Deposited Residue Count: 578 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
beta-lactamase	A, B	289	Klebsiella pneumoniae	Mutation(s): 0  Gene Names: ges-1, blaGES-1 EC: 3.5.2.6
UniProt
Find proteins for Q09HD0 (Klebsiella pneumoniae) Explore Q09HD0  Go to UniProtKB:  Q09HD0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EPE	C [auth A], D [auth B]	4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID C8 H18 N2 O4 S JKMHFZQWWAIEOD-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.66 Å
• R-Value Free:  0.251 (Depositor), 0.253 (DCC) 
• R-Value Work:  0.202 (Depositor), 0.203 (DCC) 
• R-Value Observed: 0.205 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.63	α = 90
b = 80.61	β = 101.4
c = 71.07	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XSCALE	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-03-26 
Deposition Author(s): Beer, M., Hinchliffe, P., Spencer, J.

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Funding Organization	Location	Grant Number
Biotechnology and Biological Sciences Research Council (BBSRC)	United Kingdom	BB/T008741/10

Revision History  

• Version 1.0: 2025-03-26
  Type: Initial release