Biological Assembly 1  

 3D View: Structure

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - AB 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 5757.56 
• Atom Count: 398 
• Residue Count: 51 
• Unique protein chains: 2

1HIQ

PARADOXICAL STRUCTURE AND FUNCTION IN A MUTANT HUMAN INSULIN ASSOCIATED WITH DIABETES MELLITUS

• DOI: 10.2210/pdb1HIQ/pdb
• BMRB: 1344

• Classification: HORMONE
• Organism(s): Homo sapiens
• Mutation(s): 1 


• Deposited: 1993-03-05 Released: 1994-01-31 
• Deposition Author(s): Hua, Q.X., Shoelson, S.E., Inouye, K., Weiss, M.A.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Submitted: 10 

Literature

Paradoxical structure and function in a mutant human insulin associated with diabetes mellitus.

Hua, Q.X., Shoelson, S.E., Inouye, K., Weiss, M.A.

(1993) Proc.Natl.Acad.Sci.USA 90: 582-586

• PubMed: 8421693 


• PubMed Abstract: 
  

The solution structure of a diabetes-associated mutant human insulin (insulin Los Angeles; PheB24-->Ser) was determined by 13C-edited NMR spectroscopy and distance-geometry/simulated annealing calculations. Among vertebrate insulins PheB24 is invariant, and in crystal structures the aromatic ring appears to anchor the putative receptor-binding surface through long-range packing interactions in the hydrophobic core. B24 substitutions are of particular interest in relation to the mechanism of receptor binding. In one analogue ([GlyB24]insulin), partial unfolding of the B chain has been observed with paradoxical retention of near-native bioactivity. The present study of [SerB24]insulin extends this observation: relative to [GlyB24]insulin, near-native structure is restored despite significant loss of function. To our knowledge, our results provide the first structural study of a diabetes-associated mutant insulin and support the hypothesis that insulin undergoes a change in conformation on receptor binding.

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Related Citations: 

• Structure and Dynamics of Des-Pentapeptide-Insulin in Solution: The Molten-Globule Hypothesis
  Hua, Q.-X.,Kochoyan, M.,Weiss, M.A.
  (1992) Proc.Natl.Acad.Sci.USA 89: 2379
• Receptor Binding Redefined by a Structural Switch in a Mutant Human Insulin
  Hua, Q.X.,Shoelson, S.E.,Kochoyan, M.,Weiss, M.A.
  (1991) Nature 354: 238




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Organizational Affiliation: 

Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
INSULIN	A	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	30	Homo sapiens	Mutation(s): 1  Gene Names: INS
Find proteins for P01308 (Homo sapiens) Go to Gene View: INS Go to UniProtKB:  P01308

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Submitted: 10 
• Olderado: 1HIQ Olderado

Software Package:

Software Name	Purpose
X-PLOR	phasing
X-PLOR	refinement
X-PLOR	model building

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1993-03-05 
• Released Date: 1994-01-31 
• Deposition Author(s): Hua, Q.X., Shoelson, S.E., Inouye, K., Weiss, M.A.

Revision History 

• Version 1.0: 1994-01-31
  Type: Initial release
• Version 1.1: 2008-03-24
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance
• Version 1.3: 2017-11-29
  Type: Derived calculations, Other