Biological Assembly 1  

 3D View: Structure | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 56682.53 
• Atom Count: 3812 
• Residue Count: 496 
• Unique protein chains: 1

1DMX

MURINE MITOCHONDRIAL CARBONIC ANYHDRASE V AT 2.45 ANGSTROMS RESOLUTION

• DOI: 10.2210/pdb1DMX/pdb

• Classification: LYASE (OXO-ACID)
• Organism(s): Mus musculus
• Expression System: Escherichia coli


• Deposited: 1995-10-04 Released: 1996-04-03 
• Deposition Author(s): Boriack-Sjodin, P.A., Christianson, D.W.

---

Experimental Data Snapshot

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

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.USA 92: 10949-10953

• PubMed: 7479916 
• Primary Citation of Related Structures:  
  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.

---

Related Citations: 

• Catalytic Properties of Mouse Carbonic Anhydrase V
  Heck, R.W.,Tanhauser, S.M.,Manda, R.,TU, C.,Laipis, P.J.,Silverman, D.N.
  (1994) J.Biol.Chem. 269: 24742




---

Organizational Affiliation: 

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

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
MURINE CARBONIC ANHYDRASE V	A, B	248	Mus musculus	Mutation(s): 0  Gene Names: Ca5a (Ca5, Car5, Car5a) EC: 4.2.1.1
Find proteins for P23589 (Mus musculus) Go to UniProtKB:  P23589

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
ZN	A, 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 
• Space Group: P 1

Unit Cell:

Length (Å)	Angle (°)
a = 48.690	α = 67.65
b = 60.370	β = 75.26
c = 60.440	γ = 75.21

Software Package:

Software Name	Purpose
X-PLOR	refinement
MOSFLM	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1995-10-04 
• Released Date: 1996-04-03 
• Deposition Author(s): Boriack-Sjodin, P.A., Christianson, D.W.

Revision History 

• Version 1.0: 1996-04-03
  Type: Initial release
• Version 1.1: 2008-03-03
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance