3CZV

Crystal structure of the human carbonic anhydrase XIII in complex with acetazolamide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.178 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structure of human carbonic anhydrase XIII and its complex with the inhibitor acetazolamide.

Di Fiore, A.Monti, S.M.Hilvo, M.Parkkila, S.Romano, V.Scaloni, A.Pedone, C.Scozzafava, A.Supuran, C.T.De Simone, G.

(2008) Proteins 74: 164-175

  • DOI: 10.1002/prot.22144
  • Primary Citation of Related Structures:  3D0N

  • PubMed Abstract: 
  • The cytosolic isoform XIII is a recently discovered member of the human carbonic anhydrase (hCA, EC 4.2.1.1) family. It is selectively expressed among other tissues in the reproductive organs, where it may control pH and ion balance regulation, ensur ...

    The cytosolic isoform XIII is a recently discovered member of the human carbonic anhydrase (hCA, EC 4.2.1.1) family. It is selectively expressed among other tissues in the reproductive organs, where it may control pH and ion balance regulation, ensuring thus proper fertilization conditions. The authors report here the X-ray crystallographic structure of this isozyme in the unbound state and in complex with a classical sulfonamide inhibitor, namely acetazolamide. A detailed comparison of the obtained structural data with those already reported for other CA isozymes provides novel insights into the catalytic properties of the members of this protein family. On the basis of the inhibitory properties of acetazolamide against various cytosolic/transmembrane isoforms and the structural differences detected within the active site of the various CA isoforms, further prospects for the design of isozyme-specific CA inhibitors are here proposed.


    Related Citations: 
    • Refined structure of human carbonic anhydrase II at 2.0 A resolution
      Eriksson, A.E.,Jones, T.A.,Liljas, A.
      (1988) Proteins 4: 274


    Organizational Affiliation

    Istituto di Biostrutture e Bioimmagini-CNR, 80134 Naples, Italy.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Carbonic anhydrase 13
A, B
264Homo sapiensGene Names: CA13
EC: 4.2.1.1
Find proteins for Q8N1Q1 (Homo sapiens)
Go to Gene View: CA13
Go to UniProtKB:  Q8N1Q1
Small Molecules
Ligands 3 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
GOL
Query on GOL

Download SDF File 
Download CCD File 
B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
AZM
Query on AZM

Download SDF File 
Download CCD File 
A, B
5-ACETAMIDO-1,3,4-THIADIAZOLE-2-SULFONAMIDE
C4 H6 N4 O3 S2
BZKPWHYZMXOIDC-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
AZMIC50: 490 - 1050 nM (91) BINDINGDB
AZMKi: 17 nM (91) BINDINGDB
AZMKi: 16 nM BINDINGMOAD
AZMKi: 16 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.178 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 59.030α = 90.00
b = 81.567β = 90.00
c = 112.374γ = 90.00
Software Package:
Software NamePurpose
CrystalCleardata collection
HKL-2000data reduction
AMoREphasing
CNSrefinement
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-07-29
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Non-polymer description, Version format compliance