Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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Global Symmetry: Dihedral - D3  (3D View)
Global Stoichiometry: Hetero 12-mer - A6B6 

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

Macromolecule Content

• Total Structure Weight: 35887.59 
• Atom Count: 2477 
• Residue Count: 306 
• Unique protein chains: 2

1EV6

Structure of the monoclinic form of the M-cresol/insulin R6 hexamer

• DOI: 10.2210/pdb1EV6/pdb

• Classification: HORMONE/GROWTH FACTOR
• Organism(s): Homo sapiens


• Deposited: 2000-04-19 Released: 2000-12-04 
• Deposition Author(s): Smith, G.D., Ciszak, E., Magrum, L.A., Pangborn, W.A., Blessing, R.H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.9 Å
• R-Value Free: 0.235 
• R-Value Work: 0.195 

Literature

R6 Hexameric Insulin Complexed with m-Cresol or Resorcinol

Smith, G.D., Ciszak, E., Magrum, L.A., Pangborn, W.A., Blessing, R.H.

(2000) Biochem.Biophys.Res.Commun. 56: 1541-1548

• PubMed: 11092919 
• Primary Citation of Related Structures:  
  1EVR, 1EV3


• PubMed Abstract: 
  

The structures of three R(6) human insulin hexamers have been determined. Crystals of monoclinic m-cresol-insulin, monoclinic resorcinol-insulin and rhombohedral m-cresol-insulin diffracted to 1. 9, 1.9 and 1.78 A, respectively, and have been refined to residuals of 0.195, 0.179 and 0.200, respectively. In all three structures, a phenolic derivative is found to occupy the phenolic binding site, where it forms hydrogen bonds to the carbonyl O atom of CysA6 and the N atom of CysA11. Two additional phenolic derivative binding sites were identified within or between hexamers. The structures of all three hexamers are nearly identical, although a large displacement of the N-terminus of one B chain in both monoclinic structures results from coordination to a sodium ion which is located between symmetry-related hexamers. Other minor differences in structure arise from differences in packing in the monoclinic cell compared with the rhombohedral cell. Based upon the differences in conformation of the GluB13 side chains in T(6), T(3)R(f)(3) and R(6) hexamers, the deprotonation of these side chains appears to be associated with the T-->R conformational transition.

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Related Citations: 

• Phenol Stabilizes more Helix in a New Symmetrical Zinc Insulin Hexamer
  Derewenda, U.,Derewenda, Z.,Dodson, E.J.,Dodson, G.G.,Reynolds, C.D.,Smith, G.D.,Sparks, C.,Swenson, D.
  (1989) Nature 338: 594
• Structure of a Rhombohedral R6 Insulin/Phenol Complex
  Smith, G.D.,Dodson, G.G.
  (1992) Proteins 14: 401




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Organizational Affiliation: 

Hauptman-Woodward Medical Research Institute, 73 High Street, Buffalo, NY 14203, USA. [e-mail]

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
INSULIN	A, C, E, G, I, K	21	Homo sapiens	Mutation(s): 0  Gene Names: INS
Find proteins for P01308 (Homo sapiens) Go to Gene View: INS Go to UniProtKB:  P01308

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
INSULIN	B, D, F, H, J, L	30	Homo sapiens	Mutation(s): 0  Gene Names: INS
Find proteins for P01308 (Homo sapiens) Go to Gene View: INS Go to UniProtKB:  P01308

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
CRS	A, C, E, G, I, K	M-CRESOL C7 H8 O RLSSMJSEOOYNOY-UHFFFAOYSA-N
ZN	B, D	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
NA	C	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N
CL	B, D	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.9 Å
• R-Value Free: 0.235 
• R-Value Work: 0.195 
• Space Group: P 1 2₁ 1

Unit Cell:

Length (Å)	Angle (°)
a = 61.247	α = 90.00
b = 61.739	β = 111.32
c = 47.467	γ = 90.00

Software Package:

Software Name	Purpose
SCALEPACK	data scaling
DENZO	data reduction
CNS	refinement
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-04-19 
• Released Date: 2000-12-04 
• Deposition Author(s): Smith, G.D., Ciszak, E., Magrum, L.A., Pangborn, W.A., Blessing, R.H.

Revision History 

• Version 1.0: 2000-12-04
  Type: Initial release
• Version 1.1: 2008-04-27
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance