2R35

Crystal structure of RB human arg-insulin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.08 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.237 
  • R-Value Observed: 0.243 

wwPDB Validation   3D Report Full Report


This is version 1.2 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: https://doi.org/10.1016/j.ijbiomac.2008.09.019
  • Primary Citation of Related Structures:  
    2R34, 2R35, 2R36

  • 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 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.


  • Organizational Affiliation

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


Macromolecules

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Insulin
A, C
22Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P01308 (Homo sapiens)
Explore P01308 
Go to UniProtKB:  P01308
PHAROS:  P01308
GTEx:  ENSG00000254647 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01308
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Insulin
B, D
30Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P01308 (Homo sapiens)
Explore P01308 
Go to UniProtKB:  P01308
PHAROS:  P01308
GTEx:  ENSG00000254647 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01308
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.08 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.237 
  • R-Value Observed: 0.243 
  • Space Group: H 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 80.522α = 90
b = 80.522β = 90
c = 38.329γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
AUTOMARdata reduction
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-09-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2023-10-25
    Changes: Data collection, Database references, Derived calculations, Refinement description