2FW4

Carbonic anhydrase activators. The first X-ray crystallographic study of an activator of isoform I, structure with L-histidine.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.303 
  • R-Value Work: 0.213 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Carbonic anhydrase activators: The first X-ray crystallographic study of an adduct of isoform I.

Temperini, C.Scozzafava, A.Supuran, C.T.

(2006) Bioorg.Med.Chem.Lett. 16: 5152-5156

  • DOI: 10.1016/j.bmcl.2006.07.021

  • PubMed Abstract: 
  • The X-ray crystallographic structure for the adduct of an activator with human carbonic anhydrase isozyme I (hCA I) is reported. L-Histidine binds deep within the enzyme active site, participating in a network of hydrogen bonds involving its carboxyl ...

    The X-ray crystallographic structure for the adduct of an activator with human carbonic anhydrase isozyme I (hCA I) is reported. L-Histidine binds deep within the enzyme active site, participating in a network of hydrogen bonds involving its carboxylate moiety and the zinc-bound water molecule, as well as the imidazole of His200, being in van der Waals contacts with Thr199, His200, His64, and His67. This binding is very different from that to the other major cytosolic isozyme hCA II.


    Organizational Affiliation

    Università degli Studi di Firenze, Laboratorio di Chimica Bioinorganica, Rm. 188, Via della Lastruccia 3, I-50019 Sesto Fiorentino, Firenze, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Carbonic anhydrase 1
A, B
260Homo sapiensMutation(s): 0 
Gene Names: CA1
EC: 4.2.1.1
Find proteins for P00915 (Homo sapiens)
Go to Gene View: CA1
Go to UniProtKB:  P00915
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
HIS
Query on HIS

Download SDF File 
Download CCD File 
A, B
HISTIDINE
C6 H10 N3 O2
HNDVDQJCIGZPNO-YFKPBYRVSA-O
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
HISKd: 30 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.303 
  • R-Value Work: 0.213 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 62.138α = 90.00
b = 70.182β = 90.00
c = 120.573γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
MOSFLMdata reduction
SCALEPACKdata scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-08-08
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-04-04
    Type: Data collection