4MGP

Structure of racemic Ala-(8,13,18) Magainin 2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.197 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Evidence for Phenylalanine Zipper-Mediated Dimerization in the X-ray Crystal Structure of a Magainin 2 Analogue.

Hayouka, Z.Mortenson, D.E.Kreitler, D.F.Weisblum, B.Forest, K.T.Gellman, S.H.

(2013) J.Am.Chem.Soc. 135: 15738-15741

  • DOI: 10.1021/ja409082w

  • PubMed Abstract: 
  • High-resolution structure elucidation has been challenging for the large group of host-defense peptides that form helices on or within membranes but do not manifest a strong folding propensity in aqueous solution. Here we report the crystal structure ...

    High-resolution structure elucidation has been challenging for the large group of host-defense peptides that form helices on or within membranes but do not manifest a strong folding propensity in aqueous solution. Here we report the crystal structure of an analogue of the widely studied host-defense peptide magainin 2. Magainin 2 (S8A, G13A, G18A) is a designed variant that displays enhanced antibacterial activity relative to the natural peptide. The crystal structure of magainin 2 (S8A, G13A, G18A), obtained for the racemic form, features a dimerization mode that has previously been proposed to play a role in the antibacterial activity of magainin 2 and related peptides.


    Organizational Affiliation

    Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Magainin 2 Derivative
A
23Xenopus laevisMutation(s): 0 
Gene Names: magainins
Find proteins for P11006 (Xenopus laevis)
Go to UniProtKB:  P11006
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.197 
  • Space Group: I -4 2 d
Unit Cell:
Length (Å)Angle (°)
a = 53.380α = 89.97
b = 53.459β = 90.07
c = 29.750γ = 89.98
Software Package:
Software NamePurpose
REFMACrefinement
PHASERphasing
XPREPdata reduction
EMBLdata collection
SCALEPACKdata scaling
DENZOdata reduction
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-10-16
    Type: Initial release
  • Version 1.1: 2013-10-23
    Type: Database references
  • Version 1.2: 2013-11-06
    Type: Database references