7A0U | pdb_00007a0u

LIGAND FREE TYPE II E. COLI ASPARAGINASE T12S/T89S DOUBLE MUTANT

• PDB DOI: https://doi.org/10.2210/pdb7A0U/pdb

• Classification: ANTITUMOR PROTEIN
• Organism(s): Escherichia coli K-12
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2020-08-10 Released: 2021-08-18 
• Deposition Author(s): Maggi, M., Scotti, C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.26 Å
• R-Value Free: 
  0.240 (Depositor), 0.240 (DCC) 
• R-Value Work: 
  0.171 (Depositor), 0.170 (DCC) 
• R-Value Observed: 
  0.175 (Depositor) 

Starting Models: experimental

Literature

LIGAND FREE TYPE II E. COLI ASPARAGINASE T12S/T89S DOUBLE MUTANT

Maggi, M., Scotti, C.

To be published.

Biological Assembly 1  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

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

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

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

Macromolecule Content 

• Total Structure Weight: 142.24 kDa 
• Atom Count: 10,047 
• Modeled Residue Count: 1,255 
• Deposited Residue Count: 1,332 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
L-asparaginase 2	A, B, C, D	333	Escherichia coli K-12	Mutation(s): 2  Gene Names: ansB, b2957, JW2924 EC: 3.5.1.1
UniProt
Find proteins for P00805 (Escherichia coli (strain K12)) Explore P00805  Go to UniProtKB:  P00805

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.26 Å
• R-Value Free:  0.240 (Depositor), 0.240 (DCC) 
• R-Value Work:  0.171 (Depositor), 0.170 (DCC) 
• R-Value Observed: 0.175 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 150.85	α = 90
b = 61.86	β = 117.935
c = 142.42	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
PHENIX	refinement
XDS	data reduction
XSCALE	data scaling
PHASER	phasing
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2021-08-18 
Deposition Author(s): Maggi, M., Scotti, C.

Revision History  

• Version 1.0: 2021-08-18
  Type: Initial release
  
• Version 1.1: 2024-01-31
  Changes: Data collection, Refinement description
• Version 1.2: 2024-11-06
  Changes: Structure summary