5W8B

Carbonic anhydrase II in complex with activating histamine pyridinium derivative

  • Classification: LYASE
  • Organism(s): Homo sapiens
  • Expression System: Escherichia coli
  • Mutation(s): No 

  • Deposited: 2017-06-21 Released: 2018-05-30 
  • Deposition Author(s): Bhatt, A., Ilies, M., McKenna, R.
  • Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.183 
  • R-Value Work: 0.156 
  • R-Value Observed: 0.157 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Crystal Structure of Carbonic Anhydrase II in Complex with an Activating Ligand: Implications in Neuronal Function.

Bhatt, A.Mondal, U.K.Supuran, C.T.Ilies, M.A.McKenna, R.

(2018) Mol Neurobiol 55: 7431-7437

  • DOI: https://doi.org/10.1007/s12035-017-0854-2
  • Primary Citation of Related Structures:  
    5W8B

  • PubMed Abstract: 

    Carbonic anhydrase (CA) plays a key role in neuronal signaling, providing bicarbonate and proton ions for GABAergic and glutamatergic neuronal function. Activation of CA isoforms expressed in neurons have been shown to have implications in the prognosis of Alzheimer's disease and dementia, while inhibitors of CAs are clinically used in the treatment of epilepsy, emphasizing the importance of this family of enzymes in both disease and normal neuronal function. Previously, compounds have been reported to enhance activity of CAs in an aging rat model, but their mechanism of action was not known. We report the 1.6 Å resolution structure of an imidazole-based CA activator in complex with the ubiquitously-expressed human CA II. Based on the structure, a proposed mechanism of CA activation by the compound and its potential applications in the neurobiology of aging are discussed.


  • Organizational Affiliation

    Biochemistry and Molecular Biology, University of Florida, College of Medicine, Gainesville, FL, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Carbonic anhydrase 2257Homo sapiensMutation(s): 0 
Gene Names: CA2
EC: 4.2.1.1 (PDB Primary Data), 4.2.1.69 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P00918 (Homo sapiens)
Explore P00918 
Go to UniProtKB:  P00918
PHAROS:  P00918
GTEx:  ENSG00000104267 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00918
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.183 
  • R-Value Work: 0.156 
  • R-Value Observed: 0.157 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.268α = 90
b = 41.252β = 104.1
c = 72.096γ = 90
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM109524

Revision History  (Full details and data files)

  • Version 1.0: 2018-05-30
    Type: Initial release
  • Version 1.1: 2018-08-08
    Changes: Data collection, Database references
  • Version 1.2: 2022-03-23
    Changes: Author supporting evidence, Database references
  • Version 1.3: 2023-10-04
    Changes: Data collection, Refinement description