2R34 | pdb_00002r34

Crystal structure of MN human arg-insulin

Experimental Data Snapshot

  • Method:&nbspX-RAY DIFFRACTION
  • Resolution:&nbsp2.25 Å
  • R-Value Free:&nbsp
    0.264 (Depositor), 0.190 (DCC)&nbsp
  • R-Value Work:&nbsp
    0.186 (Depositor), 0.190 (DCC)&nbsp
  • R-Value Observed:&nbsp
    0.193&nbsp(Depositor)&nbsp

Starting Model: experimental
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wwPDB Validation&nbsp &nbsp3D Report&nbspFull Report


This is version 1.3 of the entry. See complete&nbsphistory.&nbsp


Literature

Metal induced structural changes observed in hexameric insulin

Sreekanth, R.,&nbspPattabhi, V.,&nbspRajan, S.S.

(2009) Int J Biol Macromol&nbsp44: 29-36

  • DOI:&nbsphttps://doi.org/10.1016/j.ijbiomac.2008.09.019
  • Primary Citation of Related Structures: &nbsp
    2R34, 2R35, 2R36

  • PubMed Abstract:&nbsp

    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:&nbsp

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


Macromolecules

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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Insulin
A, C
22Homo sapiensMutation(s): 0&nbsp
UniProt & NIH Common Fund Data Resources
Find proteins for&nbspP01308&nbsp(Homo sapiens)
Explore&nbspP01308&nbsp
Go to UniProtKB: &nbspP01308
PHAROS: &nbspP01308
GTEx: &nbspENSG00000254647&nbsp
Entity Groups &nbsp
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01308
Sequence Annotations
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  • Reference Sequence
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(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Insulin
B, D
30Homo sapiensMutation(s): 0&nbsp
UniProt & NIH Common Fund Data Resources
Find proteins for&nbspP01308&nbsp(Homo sapiens)
Explore&nbspP01308&nbsp
Go to UniProtKB: &nbspP01308
PHAROS: &nbspP01308
GTEx: &nbspENSG00000254647&nbsp
Entity Groups &nbsp
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01308
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method:&nbspX-RAY DIFFRACTION
  • Resolution:&nbsp2.25 Å
  • R-Value Free:&nbsp 0.264 (Depositor), 0.190 (DCC)&nbsp
  • R-Value Work:&nbsp 0.186 (Depositor), 0.190 (DCC)&nbsp
  • R-Value Observed:&nbsp0.193&nbsp(Depositor)&nbsp
Space Group:&nbspH 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 80.687α = 90
b = 80.687β = 90
c = 37.517γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
AUTOMARdata reduction
AMoREphasing

Structure Validation

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View more in-depth experimental data
Entry History&nbsp

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
  • Version 1.3: 2024-11-20
    Changes: Structure summary