5ENA

Xray crystal structure of isotope-labeled human insulin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.164 
  • R-Value Work: 0.149 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystallization of Enantiomerically Pure Proteins from Quasi-Racemic Mixtures: Structure Determination by X-Ray Diffraction of Isotope-Labeled Ester Insulin and Human Insulin.

Mandal, K.Dhayalan, B.Avital-Shmilovici, M.Tokmakoff, A.Kent, S.B.

(2016) Chembiochem 17: 421-425

  • DOI: 10.1002/cbic.201500600
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • As a part of a program aimed towards the study of the dynamics of human insulin-protein dimer formation using two-dimensional infrared spectroscopy, we used total chemical synthesis to prepare stable isotope labeled [(1-(13) C=(18) O)Phe(B24) )] huma ...

    As a part of a program aimed towards the study of the dynamics of human insulin-protein dimer formation using two-dimensional infrared spectroscopy, we used total chemical synthesis to prepare stable isotope labeled [(1-(13) C=(18) O)Phe(B24) )] human insulin, via [(1-(13) C=(18) O)Phe(B24) )] ester insulin as a key intermediate product that facilitates folding of the synthetic protein molecule (see preceding article). Here, we describe the crystal structure of the synthetic isotope-labeled ester insulin intermediate and the product synthetic human insulin. Additionally, we present our observations on hexamer formation with these two proteins in the absence of phenol derivatives and/or Zn metal ions. We also describe and discuss the fractional crystallization of quasi-racemic protein mixtures containing each of these two synthetic proteins.


    Organizational Affiliation

    Department of Chemistry, University of Chicago, 929 East 57th Street, Chicago, IL, 60637, USA. kmandalt@uchicago.edu.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Insulin chain A
A
21Homo 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 chain B
B
30Homo sapiensMutation(s): 0 
Gene Names: INS
Find proteins for P01308 (Homo sapiens)
Go to Gene View: INS
Go to UniProtKB:  P01308
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.164 
  • R-Value Work: 0.149 
  • Space Group: I 21 3
Unit Cell:
Length (Å)Angle (°)
a = 77.935α = 90.00
b = 77.935β = 90.00
c = 77.935γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
PHENIXrefinement
HKL-2000data scaling
PDB_EXTRACTdata extraction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Diabetes and Digestive and Kidney DiseaseUnited StatesR01DK08993

Revision History 

  • Version 1.0: 2016-01-13
    Type: Initial release
  • Version 1.1: 2016-03-16
    Type: Database references
  • Version 1.2: 2017-09-20
    Type: Author supporting evidence, Derived calculations, Refinement description