4EY1

Human Insulin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.471 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.160 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural meta-analysis of regular human insulin in pharmaceutical formulations.

Favero-Retto, M.P.Palmieri, L.C.Souza, T.A.Almeida, F.C.Lima, L.M.

(2013) Eur J Pharm Biopharm 85: 1112-1121

  • DOI: 10.1016/j.ejpb.2013.05.005
  • Primary Citation of Related Structures:  4EWW, 4EWX, 4EWZ, 4EX0, 4EX1, 4EXX, 4EY9, 4EYD, 4EYN, 4EYP, 4F0N, 4F0O, 4F1A, 4F1B, 4F1C, 4F1D, 4F1F, 4F1G, 4F4T, 4F4V, 4F51, 4F8F, 4FG3

  • PubMed Abstract: 
  • We have studied regular acting, wild-type human insulin at potency of 100 U/mL from four different pharmaceutical products directly from their final finished formulation by the combined use of mass spectrometry (MS), dynamic light scattering (DLS), s ...

    We have studied regular acting, wild-type human insulin at potency of 100 U/mL from four different pharmaceutical products directly from their final finished formulation by the combined use of mass spectrometry (MS), dynamic light scattering (DLS), small-angle X-ray scattering (SAXS), nuclear magnetic resonance (NMR), and single-crystal protein crystallography (PX). All products showed similar oligomeric assembly in solution as judged by DLS and SAXS measurements. The NMR spectra were compatible with well folded proteins, showing close conformational identity for the human insulin in the four products. Crystallographic assays conducted with the final formulated products resulted in all insulin crystals belonging to the R3 space group with two a dimer in the asymmetric unit, both with the B-chain in the T configuration. Meta-analysis of the 24 crystal structures solved from the four distinct insulin products revealed close similarity between them regardless of variables such as biological origin, product batch, country origin of the product, and analytical approach, revealing a low conformational variability for the converging insulin structural ensemble. We propose the use of MS, SAXS, NMR fingerprint, and PX as a precise chemical and structural proof of folding identity of regular insulin in the final, formulated product.


    Organizational Affiliation

    School of Pharmacy, Federal University of Rio de Janeiro - UFRJ, Rio de Janeiro, Brazil; Brazilian National Cancer Institute (INCA), Rio de Janeiro, Brazil; Brazilian National Institute of Traumatology and Orthopedics (INTO), Rio de Janeiro, Brazil.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Insulin A chain
A, C
21Homo sapiensGene Names: INS
Find proteins for P01308 (Homo sapiens)
Go to Gene View: INS
Go to UniProtKB:  P01308
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Insulin B chain
B, D
30Homo sapiensGene 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
ZN
Query on ZN

Download SDF File 
Download CCD File 
B, D
ZINC ION
Zn
PTFCDOFLOPIGGS-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: 1.471 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.160 
  • Space Group: H 3
Unit Cell:
Length (Å)Angle (°)
a = 80.860α = 90.00
b = 80.860β = 90.00
c = 33.170γ = 120.00
Software Package:
Software NamePurpose
SCALAdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
MAR345data collection
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-05-01
    Type: Initial release
  • Version 1.1: 2013-06-12
    Type: Database references
  • Version 1.2: 2013-12-18
    Type: Database references
  • Version 1.3: 2017-11-15
    Type: Refinement description