Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 57857.03 
• Atom Count: 3687 
• Residue Count: 430 
• Unique protein chains: 1
• Unique nucleic acid chains: 2

1IC8

HEPATOCYTE NUCLEAR FACTOR 1A BOUND TO DNA : MODY3 GENE PRODUCT

• DOI: 10.2210/pdb1IC8/pdb
• NDB: PD0208

• Classification: TRANSCRIPTION/DNA
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2001-03-30 Released: 2002-11-27 
• Deposition Author(s): Chi, Y.-I., Frantz, J.D., Oh, B.-C., Hansen, L., Dhe-Paganon, S., Shoelson, S.E.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.6 Å
• R-Value Free: 0.312 
• R-Value Work: 0.254 

Literature

Diabetes mutations delineate an atypical POU domains in HNF1-Alpha

Chi, Y.-I., Frantz, J.D., Oh, B.-C., Hansen, L., Dhe-Paganon, S., Shoelson, S.E.

(2002) Mol.Cell 10: 1129-1137

• PubMed: 12453420 


• PubMed Abstract: 
  

Mutations in Hnf-1alpha are the most common Mendelian cause of diabetes mellitus. To elucidate the molecular function of a mutational hotspot, we cocrystallized human HNF-1alpha 83-279 with a high-affinity promoter and solved the structure of the complex. Two identical protein molecules are bound to the promoter. Each contains a homeodomain and a second domain structurally similar to POU-specific domains that was not predicted on the basis of amino acid sequence. Atypical elements in both domains create a stable interface that further distinguishes HNF-1alpha from other flexible POU-homeodomain proteins. The numerous diabetes-causing mutations in HNF-1alpha thus identified a previously unrecognized POU domain which was used as a search model to identify additional POU domain proteins in sequence databases.

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Organizational Affiliation: 

Joslin Diabetes Center, Department of Medicine, Harvard Medical School, Boston, MA 02215, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details
HEPATOCYTE NUCLEAR FACTOR 1-ALPHA	A, B	194	Homo sapiens	Mutation(s): 0  Gene Names: HNF1A (TCF1)
Find proteins for P20823 (Homo sapiens) Go to Gene View: HNF1A Go to UniProtKB:  P20823

Entity ID: 1
Molecule	Chains	Length	Organism
5'-D(*CP*TP*TP*GP*GP*TP*TP*AP*AP*TP*AP*AP*TP*TP*CP*AP*CP*CP*AP*GP*A)-3'	E	21	N/A

Entity ID: 2
Molecule	Chains	Length	Organism
5'-D(*TP*CP*TP*GP*GP*TP*GP*AP*AP*TP*TP*AP*TP*TP*AP*AP*CP*CP*AP*AP*G)-3'	F	21	N/A

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.6 Å
• R-Value Free: 0.312 
• R-Value Work: 0.254 
• Space Group: P 4₁

Unit Cell:

Length (Å)	Angle (°)
a = 50.389	α = 90.00
b = 50.389	β = 90.00
c = 207.272	γ = 90.00

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2001-03-30 
• Released Date: 2002-11-27 
• Deposition Author(s): Chi, Y.-I., Frantz, J.D., Oh, B.-C., Hansen, L., Dhe-Paganon, S., Shoelson, S.E.

Revision History 

• Version 1.0: 2002-11-27
  Type: Initial release
• Version 1.1: 2008-04-27
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance
• Version 1.3: 2017-02-01
  Type: Structure summary
• Version 1.4: 2018-01-24
  Type: Database references, Structure summary