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 (software)

Macromolecule Content

• Total Structure Weight: 33006.92 
• Atom Count: 2287 
• Residue Count: 288 
• Unique protein chains: 2

1HTV

CRYSTAL STRUCTURE OF DESTRIPEPTIDE (B28-B30) INSULIN

• DOI: 10.2210/pdb1HTV/pdb

• Classification: HORMONE/GROWTH FACTOR
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2001-01-01 Released: 2001-05-23 
• Deposition Author(s): Ye, J., Chang, W., Liang, D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.9 Å
• R-Value Free: 0.240 
• R-Value Work: 0.196 

Literature

Crystal structure of destripeptide (B28-B30) insulin: implications for insulin dissociation.

Ye, J., Chang, W., Liang, D.

(2001) Biochim.Biophys.Acta 1547: 18-25

• PubMed: 11343787 


• PubMed Abstract: 
  

Destripeptide (B28-B30) insulin (DTRI) is an insulin analogue that has much weaker association ability than native insulin but keeps most of its biological activity. It can be crystallized from a solution containing zinc ions at near-neutral pH. Its crystal structure has been determined by molecular replacement and refined at 1.9 A resolution. DTRI in the crystal exists as a loose hexamer compared with 2Zn insulin. The hexamer only contains one zinc ion that coordinates to the B10 His residues of three monomers. Although residues B28-B30 are located in the monomer-monomer interface within a dimer, the removal of them can simultaneously weaken both the interactions between monomers within the dimer and the interactions between dimers. Because the B-chain C-terminus of insulin is very flexible, we take the DTRI hexamer as a transition state in the native insulin dissociation process and suggest a possible dissociation process of the insulin hexamer based on the DTRI structure.

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Related Citations: 

• Preparation of Destripeptide (B28-B30) Insulin and Destetrapeptide (B27-B30) Insulin and Preliminary X-ray Crystallographic Study of Destripeptide Insulin
  Mao, Y.,Li, M.,Wan, Z.,Jiang, T.,An, X.,Liang, D.,Liu, F.,Huang, C.,Chen, L.,Hu, M.
  (1999) PROG.NAT.SCI. 9: 241
• Crystal Structural Studies of Destripeptide (B28-B30) Insulin
  Ye, J.,Mao, Y.,Gui, L.,Chang, W.,Liang, D.
  (2000) SCI.CHINA,SER.B 43: 178




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Organizational Affiliation: 

National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road, Chaoyang District, 100101, Beijing, PR China.

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	27	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	B	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.9 Å
• R-Value Free: 0.240 
• R-Value Work: 0.196 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 49.810	α = 90.00
b = 51.550	β = 90.00
c = 100.600	γ = 90.00

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
X-PLOR	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2001-01-01 
• Released Date: 2001-05-23 
• Deposition Author(s): Ye, J., Chang, W., Liang, D.

Revision History 

• Version 1.0: 2001-05-23
  Type: Initial release
• Version 1.1: 2008-04-27
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance