RCSB PDB - 1RZA: X-RAY ANALYSIS OF METAL SUBSTITUTED HUMAN CARBONIC ANHYDRASE II DERIVATIVES (original) (raw)
X-RAY ANALYSIS OF METAL SUBSTITUTED HUMAN CARBONIC ANHYDRASE II DERIVATIVES
This is version 1.4 of the entry. See complete history.
X-ray analysis of metal-substituted human carbonic anhydrase II derivatives.
[Hakansson, K.](/search?q=citation.rcsb%5Fauthors:Hakansson, K.), [Wehnert, A.](/search?q=citation.rcsb%5Fauthors:Wehnert, A.), [Liljas, A.](/search?q=citation.rcsb%5Fauthors:Liljas, A.)
(1994) Acta Crystallogr D Biol Crystallogr 50: 93-100
PubMed: 15299481 Search on PubMed
PubMed Abstract:
Metal-substituted crystals of human carbonic anhydrase II belonging to space group P2(1) with cell dimensions a = 42.7, b = 41.7, c = 73.0 A and beta = 104.6 degrees were analyzed crystallographically. The resolution limit ranged from 1.82 to 1.92 A with high completeness (86.2-90.7%). Cobalt(II)-substituted carbonic anhydrase has a tetrahedral coordination around the metal both at pH 6 and pH 7.8, similar to the native zinc enzyme. In contrast, the catalytically inactive copper(II), nickel(II) and manganese(II) derivatives showed increased coordination number around the metal ion. Whereas the copper is best described as penta-coordinated, the nickel and manganese are best described as hexa-coordinated. The results are briefly compared with spectroscopic observations and our current view on carbonic anhydrase catalysis.
Organizational Affiliation:
Molecular Biophysics, Chemical Center, University of Lund, Sweden.
Macromolecule Content
- Total Structure Weight: 29.25 kDa
- Atom Count: 2,300
- Modelled Residue Count: 258
- Deposited Residue Count: 259
- Unique protein chains: 1
Find similar proteins by:
(by identity cutoff) | 3D Structure
Experimental Data & Validation
Experimental Data
- Space Group: [P 1 21 1](/search?q=symmetry.space%5Fgroup%5Fname%5FH%5FM:P 1 21 1)
Unit Cell:
| Length ( Å ) | Angle ( ˚ ) |
|---|---|
| a = 42.7 | α = 90 |
| b = 41.7 | β = 104.6 |
| c = 73 | γ = 90 |
Software Package:
| Software Name | Purpose |
|---|---|
| PROFFT | refinement |
Revision History (Full details and data files)
- Version 1.0: 1993-10-31
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: 2017-11-29
Changes: Derived calculations, Other - Version 1.4: 2024-02-14
Changes: Data collection, Database references, Derived calculations