3FTL

NVGSNTY segment from Islet Amyloid Polypeptide (IAPP or Amylin), dehydrated crystal form

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.158 
  • R-Value Work: 0.124 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 

Literature

Molecular mechanisms for protein-encoded inheritance

Wiltzius, J.J., Landau, M., Nelson, R., Sawaya, M.R., Apostol, M.I., Goldschmidt, L., Soriaga, A.B., Cascio, D., Rajashankar, K., Eisenberg, D.

(2009) Nat.Struct.Mol.Biol. 16: 973-978

  • DOI: 10.1038/nsmb.1643
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • In prion inheritance and transmission, strains are phenotypic variants encoded by protein 'conformations'. However, it is unclear how a protein conformation can be stable enough to endure transmission between cells or organisms. Here we describe new ...

    In prion inheritance and transmission, strains are phenotypic variants encoded by protein 'conformations'. However, it is unclear how a protein conformation can be stable enough to endure transmission between cells or organisms. Here we describe new polymorphic crystal structures of segments of prion and other amyloid proteins, which offer two structural mechanisms for the encoding of prion strains. In packing polymorphism, prion strains are encoded by alternative packing arrangements (polymorphs) of beta-sheets formed by the same segment of a protein; in segmental polymorphism, prion strains are encoded by distinct beta-sheets built from different segments of a protein. Both forms of polymorphism can produce enduring conformations capable of encoding strains. These molecular mechanisms for transfer of protein-encoded information into prion strains share features with the familiar mechanism for transfer of nucleic acid-encoded information into microbial strains, including sequence specificity and recognition by noncovalent bonds.

    Organizational Affiliation: 

    UCLA-DOE Institute for Genomics and Proteomics, Howard Hughes Medical Institute, Molecular Biology Institute, University of California, Los Angeles, California, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NVGSNTY heptapeptide segment from Islet Amyloid Polypeptide
A, B
7Homo sapiensMutation(s): 0 
Gene Names: IAPP
Find proteins for P10997 (Homo sapiens)
Go to Gene View: IAPP
Go to UniProtKB:  P10997
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.158 
  • R-Value Work: 0.124 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 26.653α = 90.00
b = 4.824β = 101.02
c = 29.048γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
PHASERphasing
PDB_EXTRACTdata extraction
ADSCdata collection
REFMACrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-06-30
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-11-01
    Type: Refinement description, Source and taxonomy