6INS | pdb_00006ins

X-RAY ANALYSIS OF THE SINGLE CHAIN B29-A1 PEPTIDE-LINKED INSULIN MOLECULE. A COMPLETELY INACTIVE ANALOGUE

• PDB DOI: https://doi.org/10.2210/pdb6INS/pdb

• Classification: HORMONE
• Organism(s): Sus scrofa
• Mutation(s): No 


• Deposited: 1992-11-25 Released: 1994-01-31 
• Deposition Author(s): Derewenda, U., Derewenda, Z., Dodson, E.J., Dodson, G.G., Bing, X., Markussen, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work: 
  0.175 (DCC) 
• R-Value Observed: 
  0.179 (Depositor) 

Literature

X-ray analysis of the single chain B29-A1 peptide-linked insulin molecule. A completely inactive analogue.

Derewenda, U., Derewenda, Z., Dodson, E.J., Dodson, G.G., Bing, X., Markussen, J.

(1991) J Mol Biology 220: 425-433

• PubMed: 1856866 
• DOI: https://doi.org/10.1016/0022-2836(91)90022-x
• Primary Citation Related Structures: 
  6INS


• PubMed Abstract: 
  

  A crystal structure of a totally inactive insulin molecule has been determined. For this insulin molecule, the first without detectable activity to be characterized, the A and B-chains are linked by a peptide bond between A1 Gly and B29 Lys. The molecule has retained all its normal self-association properties and it can also accommodate the two different conformations designated T and R, as seen in 4Zn native pig insulin crystals. The hexamers of the crosslinked insulin molecule were crystallized using the 4Zn insulin recipe of Schlichtkrull. The structure has been crystallographically refined with data extending to 2 A using restrained least-square methods. Comparison of the B29-A1 peptide crosslink insulin and the 4Zn native insulin reveals close structural similarities with the native dimer. The analysis of the structure confirms the earlier hypothesis that insulin structures in crystals are not in an active conformation and that a separation of N-terminal A-chain and C-terminal B-chain is required for interaction with the insulin receptor.

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Organizational Affiliation: 
• Department of Chemistry, University of York, Heslington, U.K.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

Global Symmetry: Dihedral - D3  (Explore in 3D)
Global Stoichiometry: Homo 6-mer - A6 

Biological assembly 2 generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 11.53 kDa 
• Atom Count: 969 
• Modeled Residue Count: 100 
• Deposited Residue Count: 100 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
INSULIN	A [auth E], B [auth F]	50	Sus scrofa	Mutation(s): 0
UniProt
Find proteins for P01315 (Sus scrofa) Explore P01315  Go to UniProtKB:  P01315

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	C [auth E], D [auth F]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work:  0.175 (DCC) 
• R-Value Observed: 0.179 (Depositor) 

Space Group: H 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 79.22	α = 90
b = 79.22	β = 90
c = 37.75	γ = 120

Software Package:

Software Name	Purpose
PROLSQ	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1994-01-31 
Deposition Author(s): Derewenda, U., Derewenda, Z., Dodson, E.J., Dodson, G.G., Bing, X., Markussen, J.

Revision History  

• Version 1.0: 1994-01-31
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-06-05
  Changes: Data collection, Database references, Derived calculations, Other
• Version 1.4: 2024-10-16
  Changes: Structure summary