3I7J

Crystal Structure of a beta-lactamase (Mb2281c) from Mycobacterium bovis, Northeast Structural Genomics Consortium Target MbR246

• PDB DOI: https://doi.org/10.2210/pdb3I7J/pdb

• Classification: HYDROLASE
• Organism(s): Mycobacterium tuberculosis variant bovis
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2009-07-08 Released: 2009-07-14 
• Deposition Author(s): Forouhar, F., Lew, S., Seetharaman, J., Sahdev, S., Xiao, R., Ciccosanti, C., Wang, H., Everett, J.K., Nair, R., Acton, T.B., Rost, B., Montelione, G.T., Hunt, J.F., Tong, L., Northeast Structural Genomics Consortium (NESG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 
  0.233 (Depositor), 0.240 (DCC) 
• R-Value Work: 
  0.185 (Depositor), 0.190 (DCC) 
• R-Value Observed: 
  0.186 (Depositor) 

Literature

Northeast Structural Genomics Consortium Target MbR246

Forouhar, F., Lew, S., Seetharaman, J., Sahdev, S., Xiao, R., Ciccosanti, C., Wang, H., Everett, J.K., Nair, R., Acton, T.B., Rost, B., Montelione, G.T., Hunt, J.F., Tong, L.

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)

Biological Assembly 2  

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 59.43 kDa 
• Atom Count: 4,387 
• Modelled Residue Count: 545 
• Deposited Residue Count: 560 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
beta-lactamase Mb2281c	A, B	280	Mycobacterium tuberculosis variant bovis	Mutation(s): 0  Gene Names: Mb2281c

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free:  0.233 (Depositor), 0.240 (DCC) 
• R-Value Work:  0.185 (Depositor), 0.190 (DCC) 
• R-Value Observed: 0.186 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 65.097	α = 90
b = 97.834	β = 90
c = 114.807	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
PDB_EXTRACT	data extraction
ADSC	data collection
DENZO	data reduction
SCALEPACK	data scaling
SnB	phasing
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-07-14 
Deposition Author(s): Forouhar, F., Lew, S., Seetharaman, J., Sahdev, S., Xiao, R., Ciccosanti, C., Wang, H., Everett, J.K., Nair, R., Acton, T.B., Rost, B., Montelione, G.T., Hunt, J.F., Tong, L., Northeast Structural Genomics Consortium (NESG)

Revision History  

• Version 1.0: 2009-07-14
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2017-11-01
  Changes: Refinement description
• Version 1.3: 2019-07-24
  Changes: Data collection, Derived calculations, Refinement description
• Version 1.4: 2024-11-20
  Changes: Data collection, Database references, Structure summary