Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 16.19 kDa 
• Atom Count: 1111 
• Modelled Residue Count: 143 
• Deposited Residue Count: 143 
• Unique protein chains: 2

1L3E

NMR Structures of the HIF-1alpha CTAD/p300 CH1 Complex

• PDB DOI: 10.2210/pdb1L3E/pdb
• BMRB: 5306

• Classification: TRANSCRIPTION
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2002-02-26 Released: 2002-04-24 
• Deposition Author(s): Freedman, S.J., Sun, Z.J., Poy, F., Kung, A.L., Livingston, D.M., Wagner, G., Eck, M.J.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 25 
• Conformers Submitted: 17 
• Selection Criteria: structures with the least restraint violations,structures with the lowest energy 

Literature

Structural basis for recruitment of CBP/p300 by hypoxia-inducible factor-1 alpha.

Freedman, S.J., Sun, Z.Y., Poy, F., Kung, A.L., Livingston, D.M., Wagner, G., Eck, M.J.

(2002) Proc Natl Acad Sci U S A 99: 5367-5372

• PubMed: 11959990 
• DOI: 10.1073/pnas.082117899
• Primary Citation of Related Structures:  
  1L3E


• PubMed Abstract: 
  

Adaptation to hypoxia is mediated by transactivation of hypoxia-responsive genes by hypoxia-inducible factor-1 (HIF-1) in complex with the CBP and p300 transcriptional coactivators. We report the solution structure of the cysteine/histidine-rich 1 (CH1) domain of p300 bound to the C-terminal transactivation domain of HIF-1 alpha. CH1 has a triangular geometry composed of four alpha-helices with three intervening Zn(2+)-coordinating centers. CH1 serves as a scaffold for folding of the HIF-1 alpha C-terminal transactivation domain, which forms a vise-like clamp on the CH1 domain that is stabilized by extensive hydrophobic and polar interactions. The structure reveals the mechanism of specific recognition of p300 by HIF-1 alpha, and shows how HIF-1 alpha transactivation is regulated by asparagine hydroxylation.

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Organizational Affiliation: 

Division of Hematology/Oncology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA 02215, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
hypoxia inducible factor-1 alpha subunit	A	42	Homo sapiens	Mutation(s): 0  Gene Names: hypoxia inducible factor-1 alpha, HIF1A, BHLHE78, MOP1, PASD8
UniProt & NIH Common Fund Data Resources
Find proteins for Q16665 (Homo sapiens) Explore Q16665  Go to UniProtKB:  Q16665
PHAROS:  Q16665

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
p300 protein	B	101	Homo sapiens	Mutation(s): 0  Gene Names: P300, EP300 EC: 2.3.1.48 (UniProt), 2.3.1 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q09472 (Homo sapiens) Explore Q09472  Go to UniProtKB:  Q09472
PHAROS:  Q09472

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	C [auth B], D [auth B], E [auth B]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 25 
• Conformers Submitted: 17 
• Selection Criteria: structures with the least restraint violations,structures with the lowest energy 
• OLDERADO: 1L3E Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-02-26 
• Released Date: 2002-04-24 
Deposition Author(s): Freedman, S.J., Sun, Z.J., Poy, F., Kung, A.L., Livingston, D.M., Wagner, G., Eck, M.J.

Revision History  

• Version 1.0: 2002-04-24
  Type: Initial release
  
• Version 1.1: 2008-04-28
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2022-02-23
  Changes: Data collection, Database references, Derived calculations