1FQQ

SOLUTION STRUCTURE OF HUMAN BETA-DEFENSIN-2


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest target function value 

wwPDB Validation 3D Report Full Report


This is version 2.0 of the entry. See complete history

Literature

The NMR structure of human beta-defensin-2 reveals a novel alpha-helical segment.

Sawai, M.V.Jia, H.P.Liu, L.Aseyev, V.Wiencek, J.M.McCray Jr., P.B.Ganz, T.Kearney, W.R.Tack, B.F.

(2001) Biochemistry 40: 3810-3816


  • PubMed Abstract: 
  • Human beta-defensin-2 (HBD-2) is a member of the defensin family of antimicrobial peptides. HBD-2 was first isolated from inflamed skin where it is posited to participate in the killing of invasive bacteria and in the recruitment of cells of the adap ...

    Human beta-defensin-2 (HBD-2) is a member of the defensin family of antimicrobial peptides. HBD-2 was first isolated from inflamed skin where it is posited to participate in the killing of invasive bacteria and in the recruitment of cells of the adaptive immune response. Static light scattering and two-dimensional proton nuclear magnetic resonance spectroscopy have been used to assess the physical state and structure of HBD-2 in solution. At concentrations of < or = 2.4 mM, HBD-2 is monomeric. The structure is amphiphilic with a nonuniform surface distribution of positive charge and contains several key structural elements, including a triple-stranded, antiparallel beta-sheet with strands 2 and 3 in a beta-hairpin conformation. A beta-bulge in the second strand occurs at Gly28, a position conserved in the entire defensin family. In solution, HBD-2 exhibits an alpha-helical segment near the N-terminus that has not been previously ascribed to solution structures of alpha-defensins or to the beta-defensin BNBD-12. This novel structural element may be a factor contributing to the specific microbicidal or chemokine-like properties of HBD-2.


    Organizational Affiliation

    Departments of Microbiology and Pediatrics and NMR Facility, The University of Iowa College of Medicine, Iowa City, Iowa 52242, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
BETA-DEFENSIN-2
A
41Homo sapiensMutation(s): 0 
Gene Names: DEFB4A, DEFB4B (DEFB102, DEFB2, DEFB4)
Find proteins for O15263 (Homo sapiens)
Go to Gene View: DEFB4A DEFB4B
Go to UniProtKB:  O15263
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest target function value 
  • Olderado: 1FQQ Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-04-11
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 2.0: 2018-10-24
    Type: Atomic model, Data collection, Derived calculations, Source and taxonomy