2LWL

Structural Basis for the Interaction of Human β-Defensin 6 and Its Putative Chemokine Receptor CCR2 and Breast Cancer Microvesicles


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural Basis for the Interaction of Human beta-Defensin 6 and Its Putative Chemokine Receptor CCR2 and Breast Cancer Microvesicles.

De Paula, V.S.Gomes, N.S.Lima, L.G.Miyamoto, C.A.Monteiro, R.Q.Almeida, F.C.Valente, A.P.

(2013) J.Mol.Biol. 425: 4479-4495

  • DOI: 10.1016/j.jmb.2013.08.001

  • PubMed Abstract: 
  • Human β-defensins (hBDs) are believed to function as alarm molecules that stimulate the adaptive immune system when a threat is present. In addition to its antimicrobial activity, defensins present other activities such as chemoattraction of a range ...

    Human β-defensins (hBDs) are believed to function as alarm molecules that stimulate the adaptive immune system when a threat is present. In addition to its antimicrobial activity, defensins present other activities such as chemoattraction of a range of different cell types to the sites of inflammation. We have solved the structure of the hBD6 by NMR spectroscopy that contains a conserved β-defensin domain followed by an extended C-terminus. We use NMR to monitor the interaction of hBD6 with microvesicles shed by breast cancer cell lines and with peptides derived from the extracellular domain of CC chemokine receptor 2 (Nt-CCR2) possessing or not possessing sulfation on Tyr26 and Tyr28. The NMR-derived model of the hBD6/CCR2 complex reveals a contiguous binding surface on hBD6, which comprises amino acid residues of the α-helix and β2-β3 loop. The microvesicle binding surface partially overlaps with the chemokine receptor interface. NMR spin relaxation suggests that free hBD6 and the hBD6/CCR2 complex exhibit microsecond-to-millisecond conformational dynamics encompassing the CCR2 binding site, which might facilitate selection of the molecular configuration optimal for binding. These data offer new insights into the structure-function relation of the hBD6-CCR2 interaction, which is a promising target for the design of novel anticancer agents.


    Organizational Affiliation

    Centro Nacional de Ressonância Magnética Nuclear de Macromoléculas, Instituto de Bioquímica Médica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ 21941-902, Brazil.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Beta-defensin 106
A
49Homo sapiensMutation(s): 1 
Gene Names: DEFB106A, DEFB106B (BD6, DEFB106, DEFB6)
Find proteins for Q8N104 (Homo sapiens)
Go to Gene View: DEFB106A DEFB106B
Go to UniProtKB:  Q8N104
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-08-21
    Type: Initial release
  • Version 1.1: 2013-09-11
    Type: Database references
  • Version 1.2: 2013-11-13
    Type: Database references