ISDA: 7OTD

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Deposition Date 2021-06-10

Release Date 2021-10-13

Last Version Date 2021-10-13

Entry Detail

PDB ID:

7OTD

Keywords:

HORMONE

Title:

Oxytocin NMR solution structure

Method Details:

Experimental Method:

SOLUTION NMR

Conformers Calculated:

Conformers Submitted:

Selection Criteria:

structures with the lowest energy

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:UNK-TYR-ILE-GLN-ASN-CYS-PRO-LEU-GLY
Chain IDs:A
Chain Length:9
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P01178 Pfam ID:PF00220

Ligand Molecules

NH2

Primary Citation

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.Show

J.Biol.Inorg.Chem. 26 809 815 (2021)

PMID: 34459989 DOI: 10.1007/s00775-021-01897-1

Abstact

Oxytocin is a neuropeptide that binds copper ions in nature. The structure of oxytocin in interaction with Cu2+ 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 Cu2+. Oxytocin copper complex structure revealed by paramagnetic relaxation enhancement NMR analyses.

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Primary Citation of related structures

Abstact

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