3N6I

Crystal Structure of BlaC-E166A covalently bound with 6-aminopenicillian

• PDB DOI: https://doi.org/10.2210/pdb3N6I/pdb

• Classification: Hydrolase/Antibiotic
• Organism(s): Mycobacterium tuberculosis
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2010-05-25 Released: 2011-12-14 
• Deposition Author(s): Tremblay, L.W., Blanchard, J.S.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.192 
• R-Value Work: 0.150 
• R-Value Observed: 0.152 

Starting Model: experimental

Literature

The Structure Activity Relationship of BlaC with all classes of beta-lactams

Tremblay, L.W., Blanchard, J.S.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 28.62 kDa 
• Atom Count: 2,325 
• Modelled Residue Count: 265 
• Deposited Residue Count: 265 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Beta-lactamase	A	265	Mycobacterium tuberculosis	Mutation(s): 1  Gene Names: blaA, blaC, MT2128, MTCY49.07c, Rv2068c EC: 3.5.2.6
UniProt
Find proteins for P9WKD3 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Explore P9WKD3  Go to UniProtKB:  P9WKD3

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
XD1	B [auth A]	(2R,4S)-2-[(1R)-1-amino-2-oxoethyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid C8 H14 N2 O3 S SVTWYXMNISTMAS-NGJCXOISSA-N
PO4	C [auth A], D [auth A]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.192 
• R-Value Work: 0.150 
• R-Value Observed: 0.152 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 49.855	α = 90
b = 68.052	β = 90
c = 75.469	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
CBASS	data collection
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-12-14 
Deposition Author(s): Tremblay, L.W., Blanchard, J.S.

Revision History  

• Version 1.0: 2011-12-14
  Type: Initial release
  
• Version 1.1: 2012-03-28
  Changes: Other
• Version 1.2: 2017-11-08
  Changes: Refinement description
• Version 1.3: 2023-09-06
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.4: 2024-10-16
  Changes: Structure summary