9HKR | pdb_00009hkr

NMR structure of the C-terminal domain of the human SPAG1 protein

• PDB DOI: https://doi.org/10.2210/pdb9HKR/pdb
• BMRB: 34968

• Classification: CHAPERONE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2024-12-04 Released: 2025-12-17 
• Deposition Author(s): Chagot, M.E., Quinternet, M.
• Funding Organization(s): Centre National de la Recherche Scientifique (CNRS)

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 120 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

R2TP-like complexes as quaternary chaperones. A comprehensive overview to understand the dynamic R2SP complex

Chagot, M.E., Quinternet, M.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by (software)

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 15.52 kDa 
• Atom Count: 1,090 
• Modeled Residue Count: 135 
• Deposited Residue Count: 135 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Sperm-associated antigen 1	A	135	Homo sapiens	Mutation(s): 0  Gene Names: SPAG1
UniProt & NIH Common Fund Data Resources
Find proteins for Q07617 (Homo sapiens) Explore Q07617  Go to UniProtKB:  Q07617
PHAROS:  Q07617 GTEx:  ENSG00000104450

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 120 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-12-17 
Deposition Author(s): Chagot, M.E., Quinternet, M.

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Funding Organization	Location	Grant Number
Centre National de la Recherche Scientifique (CNRS)	France	--

Revision History  

• Version 1.0: 2025-12-17
  Type: Initial release