9A9Z | pdb_00009a9z

Hypoxia Inducible Factor 1 complex bound to a TACC3 fragment (758-838)

• PDB DOI: https://doi.org/10.2210/pdb9A9Z/pdb
• NAKB: 9A9Z

• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 2025-05-19 Released: 2025-07-09 
• Deposition Author(s): Closson, J.D., Tiyani, T.T., Gardner, K.H.

---

Integrative Structure Snapshot

• Multi-Scale: No 
• Multi-State: No 
• Ordered State: No 
• Deposited Models: 1 
• Representative Model: 1 

Literature

Context-Dependent Variability Of HIF Heterodimers Influences Interactions With Macromolecular And Small Molecule Partners

Closson, J.D., Xu, X., Zhang, M., Tiyani, T.T., Marcelino, L.P., Isiorho, E.A., Nagati, J.S., Garcia, J.A., Gardner, K.H.

(2025) Biorxiv 

• DOI: https://doi.org/10.1101/2025.05.29.656908

Assembly  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 4-mer - A2B1C1 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 

Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 

Macromolecule Content 

• Total Structure Weight: 122.59 kDa 
• Atom Count: 5,788 
• Modeled Residue Count: 648 
• Deposited Residue Count: 863 
• Unique protein chains: 3
• Unique nucleic acid chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Aryl hydrocarbon receptor nuclear translocator	A	384	Homo sapiens	Mutation(s): 0  Gene Names: ARNT
UniProt & NIH Common Fund Data Resources
Find proteins for P27540 (Homo sapiens) Explore P27540  Go to UniProtKB:  P27540
PHAROS:  P27540 GTEx:  ENSG00000143437

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Hypoxia inducible factor 1-alpha	B	345	Homo sapiens	Mutation(s): 0  Gene Names: HIF1A
UniProt & NIH Common Fund Data Resources
Find proteins for Q16665 (Homo sapiens) Explore Q16665  Go to UniProtKB:  Q16665
PHAROS:  Q16665 GTEx:  ENSG00000100644

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
Transforming acidic coiled-coil containing protein 3	E, F	46	Homo sapiens	Mutation(s): 0  Gene Names: TACC3
UniProt & NIH Common Fund Data Resources
Find proteins for Q9Y6A5 (Homo sapiens) Explore Q9Y6A5  Go to UniProtKB:  Q9Y6A5
PHAROS:  Q9Y6A5 GTEx:  ENSG00000013810

Entity ID: 3
Molecule	Chains	Length	Organism	Image
20 bp hypoxia response element (forward)	C	21	N/A

Entity ID: 4
Molecule	Chains	Length	Organism	Image
20 bp hypoxia response element (reverse)	D	21	N/A

Experimental Data & Validation

Integrative Structure Snapshot

• Multi-Scale: No 
• Multi-State: No 
• Ordered State: No 
• Deposited Models: 1 
• Representative Model: 1 

Structure Validation

View Full Validation Report

View Summary Validation Report

Entry History 

Deposition Data

• Released Date: 2025-07-09 
Deposition Author(s): Closson, J.D., Tiyani, T.T., Gardner, K.H.

Revision History  

• Version 1.0: 2025-07-09
  Type: Initial release