1BT5

CRYSTAL STRUCTURE OF THE IMIPENEM INHIBITED TEM-1 BETA-LACTAMASE FROM ESCHERICHIA COLI

• PDB DOI: https://doi.org/10.2210/pdb1BT5/pdb

• Classification: HYDROLASE
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 1998-09-02 Released: 1999-09-02 
• Deposition Author(s): Maveyraud, L., Mourey, L., Pedelacq, J.D., Guillet, V., Kotra, L.K., Mobashery, S., Samama, J.P.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.238 
• R-Value Work: 0.173 

Literature

Structural Basis for Clinical Longevity of Carbapenem Antibiotics in the Face of Challenge by the Common Class A Beta-Lactamases from Antibiotic-Resistant Bacteria

Maveyraud, L., Mourey, L., Kotra, L.P., Pedelacq, J.D., Guillet, V., Mobashery, S., Samama, J.P.

(1998) J Am Chem Soc 120: 9748-9752

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 30.05 kDa 
• Atom Count: 2,498 
• Modelled Residue Count: 263 
• Deposited Residue Count: 263 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (BETA-LACTAMASE)	A	263	Escherichia coli	Mutation(s): 2  Gene Names: BLA EC: 3.5.2.6
UniProt
Find proteins for P62593 (Escherichia coli) Explore P62593  Go to UniProtKB:  P62593

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
IM2	J [auth A]	(5R)-5-[(1S,2R)-1-formyl-2-hydroxypropyl]-3-[(2-{[(E)-iminomethyl]amino}ethyl)sulfanyl]-4,5-dihydro-1H-pyrrole-2-carbox ylic acid C12 H19 N3 O4 S UACUABDJLSUFFC-IWSPIJDZSA-N
SO4	B [auth A], C [auth A], D [auth A], E [auth A], F [auth A], G [auth A], H [auth A], I [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.238 
• R-Value Work: 0.173 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 41.42	α = 90
b = 62.01	β = 90
c = 89.33	γ = 90

Software Package:

Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
REFMAC	refinement
CCP4	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-09-02 
Deposition Author(s): Maveyraud, L., Mourey, L., Pedelacq, J.D., Guillet, V., Kotra, L.K., Mobashery, S., Samama, J.P.

Revision History  

• Version 1.0: 1999-09-02
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2011-08-31
  Changes: Other
• Version 1.4: 2021-11-03
  Changes: Data collection, Database references, Derived calculations, Structure summary
• Version 1.5: 2023-12-27
  Changes: Data collection