1T0W

25 NMR structures of Truncated Hevein of 32 aa (Hevein-32) complex with N,N,N-triacetylglucosamina


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 25 
  • Conformers Submitted: 25 
  • Selection Criteria: all calculated structures submitted 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

NMR and modeling studies of protein-carbohydrate interactions: synthesis, three-dimensional structure, and recognition properties of a minimum hevein domain with binding affinity for chitooligosaccharides

Aboitiz, N.Vila-Perello, M.Groves, P.Asensio, J.L.Andreu, D.Canada, F.J.Jimenez-Barbero, J.

(2004) Chembiochem 5: 1245-1245

  • DOI: 10.1002/cbic.200400025
  • Also Cited By: 1ZWU, 1ZUV, 1ZNT

  • PubMed Abstract: 
  • HEV32, a 32-residue, truncated hevein lacking eleven C-terminal amino acids, was synthesized by solid-phase methodology and correctly folded with three cysteine bridge pairs. The affinities of HEV32 for small chitin fragments--in the forms of N,N',N" ...

    HEV32, a 32-residue, truncated hevein lacking eleven C-terminal amino acids, was synthesized by solid-phase methodology and correctly folded with three cysteine bridge pairs. The affinities of HEV32 for small chitin fragments--in the forms of N,N',N"-triacetylchitotriose ((GlcNAc)3) (millimolar) and N,N',N",N"',N",N"'-hexaacetylchitohexaose ((GlcNAc)6) (micromolar)--as measured by NMR and fluorescence methods, are comparable with those of native hevein. The HEV32 ligand-binding process is enthalpy driven, while entropy opposes binding. The NMR structure of ligand-bound HEV32 in aqueous solution was determined to be highly similar to the NMR structure of ligand-bound hevein. Solvated molecular-dynamics simulations were performed in order to monitor the changes in side-chain conformation of the binding site of HEV32 and hevein upon interaction with ligands. The calculations suggest that the Trp21 side-chain orientation of HEV32 in the free form differs from that in the bound state; this agrees with fluorescence and thermodynamic data. HEV32 provides a simple molecular model for studying protein-carbohydrate interactions and for understanding the physiological relevance of small native hevein domains lacking C-terminal residues.


    Related Citations: 
    • NMR investigations of protein-carbohydrate interactions: refined three-dimensional structure of the complex between hevein and methyl beta-chitobioside
      Asensio, J.L.,Canada, F.J.,Bruix, M.,Gonzalez, C.,Khiar, N.,Rodriguez-Romero, A.,Jimenez-Barbero, J.
      (1998) Glycobiology 8: 569
    • The interaction of hevein with N-acetylglucosamine-containing oligosaccharides. Solution structure of hevein complexed to chitobiose
      Asensio, J.L.,Canada, F.J.,Bruix, M.,Rodriguez-Romero, A.,Jimenez-Barbero, J.
      (1995) Eur.J.Biochem. 230: 621
    • NMR Investigations of Protein-Carbohydrate Interactions: Studies on the Relevance of Trp/Tyr Variations in Lectin Binding Sites as Deduced from Titration Microcalorimetry and NMR Studies on Hevein Domains. Determination of the NMR Structure of the Complex between Pseudohevein and N'N',N''-triacetylchitotriose
      Asensio, J.L.,Siebert, H.-C.,von der Lieth, C.-W.,Laynez, J.,Bruix, M.,Soedjanaamadja, U.M.,Beintema, J.J.,Canada, F.J.,Gabius, H.-J.,Jimenez-Barbero, J.
      (2000) PROTEINS: STRUCT.,FUNCT.,GENET. 40: 218
    • Structural basis for chitin recognition by defense proteins: GlcNAc residues are bound in a multivalent fashion by extended binding sites in hevein domains
      Asensio, J.L.,Canada, F.J.,Siebert, H.-C.,Laynez, J.,Poveda, A.,Nieto, P.M.,Soedjanaamadja, U.M.,Gabius, H.-J.,Jimenez-Barbero, J.
      (2000) Chem.Biol. 7: 529
    • H NMR study of the solution structure of Ac-AMP2, a sugar binding antimicrobial protein isolated from amaranthus caudatus
      Martins, J.C.,Maes, D.,Loris, R.,Pepermans, H.A.,Wyns, L.,Willem, R.,Verheyden, P.
      (1996) J.Mol.Biol. 258: 322


    Organizational Affiliation

    Department of Protein Structure and Function, Centro de Investigaciones Biológicas, CSIC, Ramiro de Maeztu 9, 28040 Madrid, Spain.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Hevein
A
33Hevea brasiliensisMutation(s): 0 
Gene Names: HEV1
Find proteins for P02877 (Hevea brasiliensis)
Go to UniProtKB:  P02877
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download SDF File 
Download CCD File 
A
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
NH2
Query on NH2
A
NON-POLYMERH2 N

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Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 25 
  • Conformers Submitted: 25 
  • Selection Criteria: all calculated structures submitted 
  • Olderado: 1T0W Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-09-28
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance