1N4O | pdb_00001n4o

Crystal structure of the Class A beta-lactamase L2 from Stenotrophomonas maltophilia

• PDB DOI: https://doi.org/10.2210/pdb1N4O/pdb

• Classification: HYDROLASE
• Organism(s): Stenotrophomonas maltophilia
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2002-11-01 Released: 2003-11-01 
• Deposition Author(s): Pernot, L., Petrella, S., Sougakoff, W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 
  0.164 (Depositor), 0.168 (DCC) 
• R-Value Work: 
  0.147 (Depositor), 0.150 (DCC) 
• R-Value Observed: 
  0.155 (Depositor) 

Starting Model: experimental

Literature

Role of the disulfide bridge Cys69-Cys238 in class A b-lactamases : a structural and biochemical investigation on the b-lactamase L2 from Stenotrophomonas maltophilia

Pernot, L., Petrella, S., Sougakoff, W.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 58.71 kDa 
• Atom Count: 4,384 
• Modeled Residue Count: 539 
• Deposited Residue Count: 552 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
L2 beta-lactamase	A, B	276	Stenotrophomonas maltophilia	Mutation(s): 0  Gene Names: blaL2 EC: 3.5.2.6
UniProt
Find proteins for Q9RBQ1 (Stenotrophomonas maltophilia) Explore Q9RBQ1  Go to UniProtKB:  Q9RBQ1

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	C [auth A], D [auth A], E [auth B], F [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free:  0.164 (Depositor), 0.168 (DCC) 
• R-Value Work:  0.147 (Depositor), 0.150 (DCC) 
• R-Value Observed: 0.155 (Depositor) 

Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 135.503	α = 90
b = 135.503	β = 90
c = 94.856	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-11-01 
Deposition Author(s): Pernot, L., Petrella, S., Sougakoff, W.

Revision History  

• Version 1.0: 2003-11-01
  Type: Initial release
  
• Version 1.1: 2008-04-28
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2023-10-25
  Changes: Data collection, Database references, Derived calculations, Refinement description