3KNE

Carbonic Anhydrase II H64C mutant in complex with an in situ formed triazole


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.183 
  • R-Value Observed: 0.128 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Stereo- and Regioselective Azide/Alkyne Cycloadditions in Carbonic Anhydrase II via Tethering, Monitored by Crystallography and Mass Spectrometry.

Schulze Wischeler, J.Sun, D.Sandner, N.U.Linne, U.Heine, A.Koert, U.Klebe, G.

(2011) Chemistry 17: 5842-5851

  • DOI: 10.1002/chem.201002437
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The carbonic anhydrase II mutant His64Cys was prepared and applied to tethered alkyne/azide cycloaddition reactions. The azide component could be tethered to the enzyme surface through a disulfide bridge, while the alkyne component was reversibly coo ...

    The carbonic anhydrase II mutant His64Cys was prepared and applied to tethered alkyne/azide cycloaddition reactions. The azide component could be tethered to the enzyme surface through a disulfide bridge, while the alkyne component was reversibly coordinated through a sulfonamide anchor to the zinc ion in the original catalytic center of the enzyme. The incipient orientation of the reactants in the binding site and of the formed triazole product were characterized by crystallography. The reaction progression could be monitored by HPLC-MS analysis.


    Organizational Affiliation

    Institut für Pharmazeutische Chemie, Philipps-Universität Marburg, Marbacher Weg 6, 35032 Marburg, Germany.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Carbonic anhydrase 2A265Homo sapiensMutation(s): 1 
Gene Names: CA2
EC: 4.2.1.1
Find proteins for P00918 (Homo sapiens)
Explore P00918 
Go to UniProtKB:  P00918
NIH Common Fund Data Resources
PHAROS  P00918
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DAW
Query on DAW

Download CCD File 
A
N-[(S)-(1-{2-oxo-2-[(3-sulfanylpropyl)amino]ethyl}-1H-1,2,3-triazol-5-yl)(phenyl)methyl]-4-sulfamoylbenzamide
C21 H24 N6 O4 S2
SQLGLXFRIDQRKD-FQEVSTJZSA-N
 Ligand Interaction
BE7
Query on BE7

Download CCD File 
A
(4-CARBOXYPHENYL)(CHLORO)MERCURY
C7 H5 Cl Hg O2
YFZOUMNUDGGHIW-UHFFFAOYSA-M
 Ligand Interaction
ZN
Query on ZN

Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.183 
  • R-Value Observed: 0.128 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.4α = 90
b = 41.5β = 104.3
c = 72γ = 90
Software Package:
Software NamePurpose
MAR345data collection
SHELXmodel building
SHELXL-97refinement
HKL-2000data reduction
HKL-2000data scaling
SHELXphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-05-18
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-11-01
    Changes: Refinement description