Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 16.46 kDa 
• Atom Count: 1,144 
• Modelled Residue Count: 140 
• Deposited Residue Count: 140 
• Unique protein chains: 1

 2MH3

NMR structure of the basic helix-loop-helix region of the transcriptional repressor HES-1

• PDB DOI:  https://doi.org/10.2210/pdb2MH3/pdb
• BMRB: 19614

• Classification: DNA BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2013-11-15 Released: 2014-02-05 
• Deposition Author(s): Wienk, H., Popovic, M., Coglievina, M., Boelens, R., Pongor, S., Pintar, A.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

The basic helix-loop-helix region of the transcriptional repressor hairy and enhancer of split 1 is preorganized to bind DNA.

Popovic, M., Wienk, H., Coglievina, M., Boelens, R., Pongor, S., Pintar, A.

(2014) Proteins 82: 537-545

• PubMed: 24403087 
• DOI: https://doi.org/10.1002/prot.24507
• Primary Citation of Related Structures:  
  2MH3


• PubMed Abstract: 
  

Hairy and enhancer of split 1, one of the main downstream effectors in Notch signaling, is a transcriptional repressor of the basic helix-loop-helix (bHLH) family. Using nuclear magnetic resonance methods, we have determined the structure and dynamics of a recombinant protein, H1H, which includes an N-terminal segment, b1, containing functionally important phosphorylation sites, the basic region b2, required for binding to DNA, and the HLH domain. We show that a proline residue in the sequence divides the protein in two parts, a flexible and disordered N-terminal region including b1 and a structured, mainly helical region comprising b2 and the HLH domain. Binding of H1H to a double strand DNA oligonucleotide was monitored through the chemical shift perturbation of backbone amide resonances, and showed that the interaction surface involves not only the b2 segment but also several residues in the b1 and HLH regions.

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Organizational Affiliation: 

Protein Structure and Bioinformatics Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), AREA Science Park, I-34149, Trieste, Italy.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Transcription factor HES-1	A, B	70	Homo sapiens	Mutation(s): 0  Gene Names: HES1, BHLHB39, HL, HRY
UniProt & NIH Common Fund Data Resources
Find proteins for Q14469 (Homo sapiens) Explore Q14469  Go to UniProtKB:  Q14469
PHAROS:  Q14469

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-02-05 
Deposition Author(s): Wienk, H., Popovic, M., Coglievina, M., Boelens, R., Pongor, S., Pintar, A.

Revision History  

• Version 1.0: 2014-02-05
  Type: Initial release
  
• Version 1.1: 2014-03-26
  Changes: Database references