4LP6

Crystal Structure of Human Carbonic Anhydrase II in complex with a quinoline oligoamide foldamer


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.194 

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Literature

Structure of a complex formed by a protein and a helical aromatic oligoamide foldamer at 2.1 angstrom resolution.

Buratto, J.Colombo, C.Stupfel, M.Dawson, S.J.Dolain, C.Langlois d'Estaintot, B.Fischer, L.Granier, T.Laguerre, M.Gallois, B.Huc, I.

(2014) Angew Chem Int Ed Engl 53: 883-887

  • DOI: 10.1002/anie.201309160
  • Primary Citation of Related Structures:  
    4LP6, 4MTY

  • PubMed Abstract: 
  • In the search of molecules that could recognize sizeable areas of protein surfaces, a series of ten helical aromatic oligoamide foldamers was synthesized on solid phase. The foldamers comprise three to five monomers carrying various proteinogenic side chains, and exist as racemic mixtures of interconverting right-handed and left-handed helices ...

    In the search of molecules that could recognize sizeable areas of protein surfaces, a series of ten helical aromatic oligoamide foldamers was synthesized on solid phase. The foldamers comprise three to five monomers carrying various proteinogenic side chains, and exist as racemic mixtures of interconverting right-handed and left-handed helices. Functionalization of the foldamers by a nanomolar ligand of human carbonic anhydrase II (HCA) ensured that they would be held in close proximity to the protein surface. Foldamer-protein interactions were screened by circular dichroism (CD). One foldamer displayed intense CD bands indicating that a preferred helix handedness is induced upon interacting with the protein surface. The crystal structure of the complex between this foldamer and HCA could be resolved at 2.1 Å resolution and revealed a number of unanticipated protein-foldamer, foldamer-foldamer, and protein-protein interactions.


    Organizational Affiliation

    Université de Bordeaux, CBMN, UMR 5248, Institut Européen de Chimie Biologie, 2 rue Robert Escarpit 33607 Pessac (France); CNRS, CBMN, UMR5248 (France); Institut Polytechnique de Bordeaux, UMR5248 (France).



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Carbonic anhydrase 2A, B260Homo 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
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
Q4I (Subject of Investigation/LOI)
Query on Q4I

Download Ideal Coordinates CCD File 
C [auth A], M [auth B]8-({[4-(3-aminopropoxy)-8-({[4-hydroxy-8-({[4-(2-methylpropoxy)-8-({[4-(3-{[(4-sulfamoylbenzoyl)amino]methyl}phenoxy)butyl]carbamoyl}amino)quinolin-2-yl]carbonyl}amino)quinolin-2-yl]carbonyl}amino)quinolin-2-yl]carbonyl}amino)-4-(carboxymethoxy)quinoline-2-carboxylic acid
C68 H64 N12 O16 S
QYOLDZJQZAEMKE-UHFFFAOYSA-N
 Ligand Interaction
ZN
Query on ZN

Download Ideal Coordinates CCD File 
D [auth A] , E [auth A] , F [auth A] , G [auth A] , H [auth A] , I [auth A] , J [auth A] , K [auth A] , 
D [auth A], E [auth A], F [auth A], G [auth A], H [auth A], I [auth A], J [auth A], K [auth A], L [auth A], N [auth B], O [auth B], P [auth B], Q [auth B]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.194 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.96α = 90
b = 84.17β = 97.18
c = 76.7γ = 90
Software Package:
Software NamePurpose
XSCALEdata scaling
MOLREPphasing
REFMACrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
XDSdata scaling

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-10-23
    Type: Initial release
  • Version 1.1: 2014-09-17
    Changes: Database references