2VK0

Crystal structure form ultalente insulin microcrystals


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.240 
  • R-Value Observed: 0.242 

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This is version 1.2 of the entry. See complete history


Literature

Crystal Structure of Ultralente--A Microcrystalline Insulin Suspension.

Wagner, A.Diez, J.Schulze-Briese, C.Schluckebier, G.

(2009) Proteins 74: 1018

  • DOI: 10.1002/prot.22213
  • Primary Citation of Related Structures:  
    2VJZ, 2VK0

  • PubMed Abstract: 
  • Ultralente insulin has been one of the commercially most important insulin preparations in diabetes treatment over the last 50 years. It is a suspension of insulin microcrystals which dissolve slowly following subcutaneous injection. Because of the s ...

    Ultralente insulin has been one of the commercially most important insulin preparations in diabetes treatment over the last 50 years. It is a suspension of insulin microcrystals which dissolve slowly following subcutaneous injection. Because of the small crystal size of about 25 x 25 x 5 microm(3) the atomic structure has been elusive until now. Here we present the crystal structures from Ultralente and their precursor microcrystals from the industrial manufacturing process. During this process insulin undergoes a conformational change within the microcrystals. Both structures show canonical folding of the insulin molecules but exhibit a number of new features when compared with other insulin structures. Surprisingly, we found that the Ultralente crystals bind the conservation agent methylparaben, which slows down dissolution of the crystals and thus contributes to the long duration of action.


    Organizational Affiliation

    Swiss Light Source, Paul Scherrer Institute, CH-5323 Villigen PSI, Switzerland. armin.wagner@diamond.ac.uk



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
INSULIN A CHAINAC21Homo sapiensMutation(s): 0 
Gene Names: INS
Find proteins for P01308 (Homo sapiens)
Explore P01308 
Go to UniProtKB:  P01308
NIH Common Fund Data Resources
PHAROS  P01308
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
INSULIN B CHAINBD30Homo sapiensMutation(s): 0 
Gene Names: INS
Find proteins for P01308 (Homo sapiens)
Explore P01308 
Go to UniProtKB:  P01308
NIH Common Fund Data Resources
PHAROS  P01308
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MPB
Query on MPB

Download CCD File 
C
4-HYDROXY-BENZOIC ACID METHYL ESTER
C8 H8 O3
LXCFILQKKLGQFO-UHFFFAOYSA-N
 Ligand Interaction
ZN
Query on ZN

Download CCD File 
B, D
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.240 
  • R-Value Observed: 0.242 
  • Space Group: H 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81.03α = 90
b = 81.03β = 90
c = 33.9γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-09-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2011-08-03
    Changes: Database references, Derived calculations, Other