1PEF

PEPTIDE F (EQLLKALEFLLKELLEKL), AMPHIPHILIC OCTADECAPEPTIDE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.170 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

A novel, multilayer structure of a helical peptide.

Taylor, K.S.Lou, M.Z.Chin, T.M.Yang, N.C.Garavito, R.M.

(1996) Protein Sci. 5: 414-421

  • DOI: 10.1002/pro.5560050302

  • PubMed Abstract: 
  • X-ray diffraction analysis at 1.5 A resolution has confirmed the helical conformation of a de novo designed 18-residue peptide. However, the crystal structure reveals the formation of continuous molecular layers of parallel-packed amphiphilic helices ...

    X-ray diffraction analysis at 1.5 A resolution has confirmed the helical conformation of a de novo designed 18-residue peptide. However, the crystal structure reveals the formation of continuous molecular layers of parallel-packed amphiphilic helices as a result of much more extensive helix-helix interactions than predicted. The crystal packing arrangement, by virtue of distinct antiparallel packing interactions, segregates the polar and apolar surfaces of the helices into discrete and well-defined interfacial regions. An extensive "ridges-into-grooves" interdigitation characterizes the hydrophobic interface, whereas an extensive network of salt bridges and hydrogen bonds dominates the corresponding hydrophilic interface.


    Related Citations: 
    • Self-Assembling Hexameric Helical Bundle Forming Peptides
      Chin, T.-M.,Berndt, K.D.,Yang, N.C.
      (1992) J.Am.Chem.Soc. 114: 2279
    • Fluorescence Study of Hexameric Helical Peptide Systems
      Hu, Y.,Chin, T.-M.,Fleming, G.R.,Yang, N.C.
      (1993) J.Phys.Chem. 97: 13330


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, University of Chicago, Illinois 60637, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PEPTIDE F (EQLLKALEFLLKELLEKL)
A
18N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.170 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 22.600α = 90.00
b = 10.670β = 101.85
c = 29.240γ = 90.00
Software Package:
Software NamePurpose
MADNESdata reduction
X-PLORmodel building
X-PLORrefinement
SADNESdata reduction
CCP4data reduction
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1996-12-07
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-04-18
    Type: Data collection, Other