5LLH

Crystal structure of human carbonic anhydrase isozyme II with 4-(1,3-Benzothiazol-2-ylthio)-2,3,5,6-tetrafluorobenzenesulfonamide

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.188 

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Literature

Crystal structure correlations with the intrinsic thermodynamics of human carbonic anhydrase inhibitor binding.

Smirnov, A., Zubriene, A., Manakova, E., Grazulis, S., Matulis, D.

(2018) PeerJ 6: e4412-e4412

  • DOI: 10.7717/peerj.4412
  • Primary Citation of Related Structures:  
    5LLC, 5LLE, 5LLG, 5LLH, 5LLO, 5LLP, 5MSB

  • PubMed Abstract: 

    • The structure-thermodynamics correlation analysis was performed for a series of fluorine- and chlorine-substituted benzenesulfonamide inhibitors binding to several human carbonic anhydrase (CA) isoforms. The total of 24 crystal structures of 16 inhibitors bound to isoforms CA I, CA II, CA XII, and CA XIII provided the structural information of selective recognition between a compound and CA isoform ...

    The structure-thermodynamics correlation analysis was performed for a series of fluorine- and chlorine-substituted benzenesulfonamide inhibitors binding to several human carbonic anhydrase (CA) isoforms. The total of 24 crystal structures of 16 inhibitors bound to isoforms CA I, CA II, CA XII, and CA XIII provided the structural information of selective recognition between a compound and CA isoform. The binding thermodynamics of all structures was determined by the analysis of binding-linked protonation events, yielding the intrinsic parameters, i.e., the enthalpy, entropy, and Gibbs energy of binding. Inhibitor binding was compared within structurally similar pairs that differ by para- or meta -substituents enabling to obtain the contributing energies of ligand fragments. The pairs were divided into two groups. First, similar binders-the pairs that keep the same orientation of the benzene ring exhibited classical hydrophobic effect, a less exothermic enthalpy and a more favorable entropy upon addition of the hydrophobic fragments. Second, dissimilar binders-the pairs of binders that demonstrated altered positions of the benzene rings exhibited the non-classical hydrophobic effect, a more favorable enthalpy and variable entropy contribution. A deeper understanding of the energies contributing to the protein-ligand recognition should lead toward the eventual goal of rational drug design where chemical structures of ligands could be designed based on the target protein structure.

    Organizational Affiliation: 

    Department of Biothermodynamics and Drug Design, Institute of Biotechnology, Vilnius University, Vilnius, Lithuania.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Carbonic anhydrase 2A260Homo sapiensMutation(s): 0 
Gene Names: CA2
EC: 4.2.1.1
UniProt & NIH Common Fund Data Resources
Find proteins for P00918 (Homo sapiens)
Explore P00918 
Go to UniProtKB:  P00918
PHAROS:  P00918
GTEx:  ENSG00000104267
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
V49 (Subject of Investigation/LOI)
Query on V49
Download Ideal Coordinates CCD File 
C [auth A]4-(1,3-benzothiazol-2-ylsulfanyl)-2,3,5,6-tetrakis(fluoranyl)benzenesulfonamide
C13 H6 F4 N2 O2 S3
YVWIZEXTHJMGAV-UHFFFAOYSA-N		 Ligand Interaction
MES
Query on MES
Download Ideal Coordinates CCD File 
F [auth A]2-(N-MORPHOLINO)-ETHANESULFONIC ACID
C6 H13 N O4 S
SXGZJKUKBWWHRA-UHFFFAOYSA-N		 Ligand Interaction
BCN (Subject of Investigation/LOI)
Query on BCN
Download Ideal Coordinates CCD File 
G [auth A]BICINE
C6 H13 N O4
FSVCELGFZIQNCK-UHFFFAOYSA-N		 Ligand Interaction
DMS
Query on DMS
Download Ideal Coordinates CCD File 
D [auth A], E [auth A]DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N		 Ligand Interaction
ZN
Query on ZN
Download Ideal Coordinates CCD File 
B [auth A]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
V49 BindingDB:  5LLH Kd: 1.1 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.188 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.239α = 90
b = 41.089β = 104.39
c = 71.854γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
PDB_EXTRACTdata extraction
MOLREPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-08-16
    Type: Initial release
  • Version 1.1: 2018-05-02
    Changes: Data collection, Database references, Structure summary
  • Version 1.2: 2018-05-16
    Changes: Data collection, Database references