9EAT

High-Resolution Structure of Escherichia coli Carbonic Anhydrase 2 in Space Group P4(2)2(1)2

  • Classification: LYASE
  • Organism(s): Escherichia coli BL21(DE3)
  • Mutation(s): No 

  • Deposited: 2024-11-11 Released: 2024-11-20 
  • Deposition Author(s): Rankin, M.R., Smith, J.L.
  • Funding Organization(s): National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK), National Institutes of Health/National Cancer Institute (NIH/NCI)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.43 Å
  • R-Value Free: 0.167 
  • R-Value Work: 0.156 
  • R-Value Observed: 0.157 

Starting Model: experimental
View more details

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Serendipitous high-resolution structure of Escherichia coli carbonic anhydrase 2.

Rankin, M.R.Smith, J.L.

(2025) Acta Crystallogr F Struct Biol Commun 

  • DOI: https://doi.org/10.1107/S2053230X25000068
  • Primary Citation of Related Structures:  
    9EAT, 9EAW, 9EBZ

  • PubMed Abstract: 

    X-ray crystallography remains the dominant method of determining the three-dimensional structure of proteins. Nevertheless, this resource-intensive process may be hindered by the unintended crystallization of contaminant proteins from the expression source. Here, the serendipitous discovery of two novel crystal forms and one new, high-resolution structure of carbonic anhydrase 2 (CA2) from Escherichia coli that arose during a crystallization campaign for an unrelated target is reported. By comparing unit-cell parameters with those in the PDB, contaminants such as CA2 can be identified, preventing futile molecular-replacement attempts. Crystallographers can use these new lattice parameters to diagnose CA2 contamination in similar experiments.


  • Organizational Affiliation

    Department of Biological Chemistry, University of Michigan, Ann Arbor, MI 48109, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Carbonic anhydrase 2220Escherichia coli BL21(DE3)Mutation(s): 0 
EC: 4.2.1.1
UniProt
Find proteins for P61517 (Escherichia coli (strain K12))
Explore P61517 
Go to UniProtKB:  P61517
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP61517
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.43 Å
  • R-Value Free: 0.167 
  • R-Value Work: 0.156 
  • R-Value Observed: 0.157 
  • Space Group: P 42 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 67.524α = 90
b = 67.524β = 90
c = 85.076γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK)United StatesR01DK042303
National Institutes of Health/National Cancer Institute (NIH/NCI)United StatesF31CA265082

Revision History  (Full details and data files)

  • Version 1.0: 2024-11-20
    Type: Initial release
  • Version 1.1: 2025-01-29
    Changes: Database references