7OFG

Oxytocin NMR solution structure

• PDB DOI: https://doi.org/10.2210/pdb7OFG/pdb
• BMRB: 34620

• Classification: HORMONE
• Organism(s): Homo sapiens
• Mutation(s): Yes 


• Deposited: 2021-05-04 Released: 2021-10-13 
• Deposition Author(s): Shalev, D.E., Alshanski, I., Yitzchaik, S., Hurevich, M.
• Funding Organization(s): European Union (EU)

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 14 
• Selection Criteria: structures with the lowest energy 

Literature

Determining the structure and binding mechanism of oxytocin-Cu 2+ complex using paramagnetic relaxation enhancement NMR analysis.

Alshanski, I., Shalev, D.E., Yitzchaik, S., Hurevich, M.

(2021) J Biol Inorg Chem 26: 809-815

• PubMed: 34459989 
• DOI: https://doi.org/10.1007/s00775-021-01897-1
• Primary Citation of Related Structures:  
  7OFG, 7OTD


• PubMed Abstract: 
  

  Oxytocin is a neuropeptide that binds copper ions in nature. The structure of oxytocin in interaction with Cu ²⁺ was determined here by NMR, showing which atoms of the peptide are involved in binding. Paramagnetic relaxation enhancement NMR analyses indicated a binding mechanism where the amino terminus was required for binding and subsequently Tyr2, Ile3 and Gln4 bound in that order. The aromatic ring of Tyr2 formed a π-cation interaction with Cu ²⁺ . Oxytocin copper complex structure revealed by paramagnetic relaxation enhancement NMR analyses.

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Organizational Affiliation: 

Institute of Chemistry and Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Givat Ram, 91904, Jerusalem, Israel.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 1.01 kDa 
• Atom Count: 69 
• Modelled Residue Count: 10 
• Deposited Residue Count: 10 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Oxytocin	A	10	Homo sapiens	Mutation(s): 1
UniProt & NIH Common Fund Data Resources
Find proteins for P01178 (Homo sapiens) Explore P01178  Go to UniProtKB:  P01178
PHAROS:  P01178 GTEx:  ENSG00000101405

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 14 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2021-10-13 
Deposition Author(s): Shalev, D.E., Alshanski, I., Yitzchaik, S., Hurevich, M.

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Funding Organization	Location	Grant Number
European Union (EU)	Israel	664786

Revision History  

• Version 1.0: 2021-10-13
  Type: Initial release
  
• Version 1.1: 2023-06-14
  Changes: Other
• Version 1.2: 2024-10-16
  Changes: Data collection, Database references, Structure summary