Biological Assembly 1  

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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,PQS (software)

Macromolecule Content

• Total Structure Weight: 11766.12 
• Atom Count: 877 
• Residue Count: 102 
• Unique protein chains: 2

1MSO

T6 Human Insulin at 1.0 A Resolution

• DOI: 10.2210/pdb1MSO/pdb

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


• Deposited: 2002-09-19 Released: 2003-03-04 
• Deposition Author(s): Smith, G.D., Pangborn, W.A., Blessing, R.H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1 Å
• R-Value Free: 0.201 
• R-Value Work: 0.183 

Literature

The structure of T6 human insulin at 1.0 A resolution.

Smith, G.D., Pangborn, W.A., Blessing, R.H.

(2003) Acta Crystallogr.,Sect.D 59: 474-482

• PubMed: 12595704 
• Also Cited By: 2A3G


• PubMed Abstract: 
  

The structure of T(6) human insulin has been determined at 120 K at a resolution of 1.0 A and refined to a residual of 0.183. As a result of cryofreezing, the first four residues of the B chain in one of the two crystallographically independent AB monomers in the hexameric [Zn(1/3)(AB)(2)Zn(1/3)](3) complex undergo a conformational shift that displaces the C(alpha) atom of PheB1 by 7.86 A relative to the room-temperature structure. A least-squares superposition of all backbone atoms of the room-temperature and low-temperature structures yielded a mean displacement of 0.422 A. Omitting the first four residues of the B chain reduced the mean displacement to 0.272 A. At 120 K, nine residues were found to exhibit two discrete side-chain conformations, but only two of these residues are in common with the seven residues found to have disordered side chains in the room-temperature structure. As a result of freezing, the disorder observed at room temperature in both ArgB22 side chains is eliminated. The close contact between pairs of O( epsilon 2) atoms in GluB13 observed at room temperature is maintained at cryotemperature and suggests that a carboxylate-carboxylic acid centered hydrogen bond exists [-C(=O)-O.H.O-C(=O)-] such that the H atom is equally shared between the two partially charged O atoms.

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Organizational Affiliation: 

Structural Biology and Biochemistry, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8, Canada. [e-mail]

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Insulin A-Chain	A, C	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-Chain	B, D	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 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
ZN	D	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1 Å
• R-Value Free: 0.201 
• R-Value Work: 0.183 
• Space Group: H 3

Unit Cell:

Length (Å)	Angle (°)
a = 81.286	α = 90.00
b = 81.286	β = 90.00
c = 33.714	γ = 120.00

Software Package:

Software Name	Purpose
CNS	refinement
sortav	data reduction
SMART	data reduction
SORTAV	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-09-19 
• Released Date: 2003-03-04 
• Deposition Author(s): Smith, G.D., Pangborn, W.A., Blessing, R.H.

Revision History 

• Version 1.0: 2003-03-04
  Type: Initial release
• Version 1.1: 2008-04-28
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Derived calculations, Version format compliance
• Version 1.3: 2017-10-11
  Type: Refinement description