8EO5

Crystal structure of the class A beta-lactamase precursor LRA-5 from an Alaskan soil metagenome at 1.8 Angstrom resolution

• PDB DOI: https://doi.org/10.2210/pdb8EO5/pdb

• Classification: ANTIMICROBIAL PROTEIN
• Organism(s): uncultured soil bacterium
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2022-10-02 Released: 2023-09-06 
• Deposition Author(s): Power, P., D'Amico Gonzalez, G., Centron, D., Gutkind, G., Handelsman, J., Klinke, S.
• Funding Organization(s): National Scientific and Technical Research Council (CONICET), Agencia Nacional de Promocion Cientifica y Tecnologica (FONCYT)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.215 
• R-Value Work: 0.189 
• R-Value Observed: 0.190 

Literature

Playing beta-Lactamase Evolution: Metagenomic Class A beta-Lactamase LRA-5 is an Inactive Enzyme Capable of Rendering an Active beta-Lactamase by Introduction of Y69Q and V166E Substitutions

D'Amico Gonzalez, G., Handelsman, J., Centron, D., Gutkind, G., Klinke, S., Power, P.

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: 62.08 kDa 
• Atom Count: 4,322 
• Modelled Residue Count: 538 
• Deposited Residue Count: 580 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
LRA-5	A, B	290	uncultured soil bacterium	Mutation(s): 0  Gene Names: blaLRA-5, AKSOIL_0013
UniProt
Find proteins for B5L5W7 (uncultured bacterium BLR5) Explore B5L5W7  Go to UniProtKB:  B5L5W7

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
TRS	C [auth B]	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL C4 H12 N O3 LENZDBCJOHFCAS-UHFFFAOYSA-O

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.215 
• R-Value Work: 0.189 
• R-Value Observed: 0.190 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 74.27	α = 90
b = 162.62	β = 90
c = 71	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
MxCuBE	data collection
XDS	data reduction
Aimless	data scaling
PHENIX	phasing
Coot	model building

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-09-06 
Deposition Author(s): Power, P., D'Amico Gonzalez, G., Centron, D., Gutkind, G., Handelsman, J., Klinke, S.

---

Funding Organization	Location	Grant Number
National Scientific and Technical Research Council (CONICET)	Argentina	11220200100191CO
Agencia Nacional de Promocion Cientifica y Tecnologica (FONCYT)	Argentina	PICT-2018 01550

Revision History  

• Version 1.0: 2023-09-06
  Type: Initial release