2R34

Crystal structure of MN human arg-insulin

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.186 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history. 

Literature

Metal induced structural changes observed in hexameric insulin

Sreekanth, R., Pattabhi, V., Rajan, S.S.

(2009) Int.J.Biol.Macromol. 44: 29-36

  • DOI: 10.1016/j.ijbiomac.2008.09.019
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • The metal ions in insulin hexamer play a crucial role in the T to R conformational transitions. We have determined the crystal structures of 2Mn2+, 1Rb1+ and 4Ni2+ human arg-insulin and compared them with the 2Zn2+ structure. The first two structures ...

    The metal ions in insulin hexamer play a crucial role in the T to R conformational transitions. We have determined the crystal structures of 2Mn2+, 1Rb1+ and 4Ni2+ human arg-insulin and compared them with the 2Zn2+ structure. The first two structures exist in the T3R3f state like the native 2Zn2+ arg-insulin, while the 4Ni2+ adopts a T6 conformation. The metal coordination is found to be tetrahedral in all the structures except that of nickel where a dual octahedral and tetrahedral coordination is found at one site. Rubidium occupies only one of the high affinity metal binding sites. The metal induced structural changes observed, have been explained.

    Related Citations: 
    • Crystallographic evidence for dual coordination around zinc in the T3R3 human insulin hexamer
      Ciszak, E.,Smith, G.D.
      (1994) Biochemistry 33: 1512

    Organizational Affiliation: 

    Centre of Advanced Study in Crystallography and Biophysics, University of Madras, Chennai, India.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Insulin
A, C
22Homo sapiensMutation(s): 0 
Gene Names: INS
Find proteins for P01308 (Homo sapiens)
Go to Gene View: INS
Go to UniProtKB:  P01308
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Insulin
B, D
30Homo sapiensMutation(s): 0 
Gene Names: INS
Find proteins for P01308 (Homo sapiens)
Go to Gene View: INS
Go to UniProtKB:  P01308
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MN
Query on MN
Download SDF File 
Download CCD File 
B, D
MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL
Download SDF File 
Download CCD File 
B, D
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.186 
  • Space Group: H 3
Unit Cell:
Length (Å)Angle (°)
a = 80.687α = 90.00
b = 80.687β = 90.00
c = 37.517γ = 120.00
Software Package:
Software NamePurpose
AMoREphasing
REFMACrefinement
AUTOMARdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-09-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance