4A7E

X-ray crystal structure of porcine insulin flash-cooled at high pressure


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.856 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.176 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Fast High-Pressure Freezing of Protein Crystals in Their Mother Liquor

Burkhardt, A.Warmer, M.Pannerselvam, S.Wagner, A.Zouni, A.Reimer, R.Hohenberg, H.Meents, A.

(2012) Acta Crystallogr.,Sect.F 68: 495

  • DOI: 10.1107/S1744309112009670
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • High-pressure freezing (HPF) is a method which allows sample vitrification without cryoprotectants. In the present work, protein crystals were cooled to cryogenic temperatures at a pressure of 210 MPa. In contrast to other HPF methods published to da ...

    High-pressure freezing (HPF) is a method which allows sample vitrification without cryoprotectants. In the present work, protein crystals were cooled to cryogenic temperatures at a pressure of 210 MPa. In contrast to other HPF methods published to date in the field of cryocrystallography, this protocol involves rapid sample cooling using a standard HPF device. The fast cooling rates allow HPF of protein crystals directly in their mother liquor without the need for cryoprotectants or external reagents. HPF was first attempted with hen egg-white lysozyme and cubic insulin crystals, yielding good to excellent diffraction quality. Non-cryoprotected crystals of the membrane protein photosystem II have been successfully cryocooled for the first time. This indicates that the presented HPF method is well suited to the vitrification of challenging systems with large unit cells and weak crystal contacts.


    Organizational Affiliation

    Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany. anja.burkhardt@desy.de




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
INSULIN A CHAIN
A
21Sus scrofaGene Names: INS
Find proteins for P01315 (Sus scrofa)
Go to Gene View: INS
Go to UniProtKB:  P01315
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
INSULIN B CHAIN
B
30Sus scrofaGene Names: INS
Find proteins for P01315 (Sus scrofa)
Go to Gene View: INS
Go to UniProtKB:  P01315
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.856 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.176 
  • Space Group: I 21 3
Unit Cell:
Length (Å)Angle (°)
a = 77.100α = 90.00
b = 77.100β = 90.00
c = 77.100γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
PHENIXrefinement
PHENIXphasing
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-11-30
    Type: Initial release
  • Version 1.1: 2012-04-11
    Type: Other
  • Version 1.2: 2012-05-30
    Type: Other