1DMX

MURINE MITOCHONDRIAL CARBONIC ANYHDRASE V AT 2.45 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.168 

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This is version 1.3 of the entry. See complete history


Literature

Structure determination of murine mitochondrial carbonic anhydrase V at 2.45-A resolution: implications for catalytic proton transfer and inhibitor design.

Boriack-Sjodin, P.A.Heck, R.W.Laipis, P.J.Silverman, D.N.Christianson, D.W.

(1995) Proc Natl Acad Sci U S A 92: 10949-10953

  • DOI: https://doi.org/10.1073/pnas.92.24.10949
  • Primary Citation of Related Structures:  
    1DMX, 1DMY

  • PubMed Abstract: 

    The three-dimensional structure of murine mitochondrial carbonic anhydrase V has been determined and refined at 2.45-A resolution (crystallographic R factor = 0.187). Significant structural differences unique to the active site of carbonic anhydrase V are responsible for differences in the mechanism of catalytic proton transfer as compared with other carbonic anhydrase isozymes. In the prototypical isozyme, carbonic anhydrase II, catalytic proton transfer occurs via the shuttle group His-64; carbonic anhydrase V has Tyr-64, which is not an efficient proton shuttle due in part to the bulky adjacent side chain of Phe-65. Based on analysis of the structure of carbonic anhydrase V, we speculate that Tyr-131 may participate in proton transfer due to its proximity to zinc-bound solvent, its solvent accessibility, and its electrostatic environment in the protein structure. Finally, the design of isozyme-specific inhibitors is discussed in view of the complex between carbonic anhydrase V and acetazolamide, a transition-state analogue. Such inhibitors may be physiologically important in the regulation of blood glucose levels.


  • Organizational Affiliation

    Department of Chemistry, University of Pennsylvania, Philadelphia 19104-6323, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
MURINE CARBONIC ANHYDRASE V
A, B
248Mus musculusMutation(s): 2 
Gene Names: MCA5C
EC: 4.2.1.1
UniProt
Find proteins for P23589 (Mus musculus)
Explore P23589 
Go to UniProtKB:  P23589
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP23589
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
C [auth A],
D [auth B]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.168 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.69α = 67.65
b = 60.37β = 75.26
c = 60.44γ = 75.21
Software Package:
Software NamePurpose
X-PLORrefinement
MOSFLMdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1996-04-03
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-02-07
    Changes: Data collection, Database references, Derived calculations, Other