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 

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This is version 2.0 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
  • Primary Citation of Related Structures:  
    1T0W

  • 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"-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 ...

    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: 
    • 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
    • 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
    • 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
    • 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 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

    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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HeveinA33N/AMutation(s): 0 
UniProt
Find proteins for P02877 (Hevea brasiliensis)
Explore P02877 
Go to UniProtKB:  P02877
Protein Feature View
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  • Reference Sequence
Oligosaccharides

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Entity ID: 2
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseB3N/A Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G47362BJ
GlyCosmos:  G47362BJ
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 2
IDChainsNameType/Class2D Diagram3D Interactions
PRD_900017
Query on PRD_900017
Btriacetyl-beta-chitotrioseOligosaccharide /  Inhibitor Ligand Interaction
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

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-09-28
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary