6I42 image
Deposition Date 2018-11-08
Release Date 2020-02-19
Last Version Date 2024-01-24
Entry Detail
PDB ID:
6I42
Keywords:
Title:
Structure of the alpha-Synuclein PreNAC/Cyclophilin A-complex
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Method Details:
Experimental Method:
Resolution:
1.38 Å
R-Value Free:
0.17
R-Value Work:
0.16
R-Value Observed:
0.16
Space Group:
P 43 21 2
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Peptidyl-prolyl cis-trans isomerase A
Gene (Uniprot):PPIA
Chain IDs:A
Chain Length:164
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Molecule:Alpha-synuclein
Gene (Uniprot):SNCA
Chain IDs:B
Chain Length:13
Number of Molecules:1
Biological Source:Homo sapiens
Primary Citation
The Molecular Basis of the Interaction of Cyclophilin A with alpha-Synuclein.
Angew.Chem.Int.Ed.Engl. 59 5643 5646 (2020)
PMID: 31830361 DOI: 10.1002/anie.201914878

Abstact

Peptidylprolyl isomerases (PPIases) catalyze cis/trans isomerization of prolines. The PPIase CypA colocalizes with the Parkinson's disease (PD)-associated protein α-synuclein in cells and interacts with α-synuclein oligomers. Herein, we describe atomic insights into the molecular details of the α-synuclein/CypA interaction. NMR spectroscopy shows that CypA catalyzes isomerization of proline 128 in the C-terminal domain of α-synuclein. Strikingly, we reveal a second CypA-binding site formed by the hydrophobic sequence 47 GVVHGVATVA56 , termed PreNAC. The 1.38 Å crystal structure of the CypA/PreNAC complex displays a contact between alanine 53 of α-synuclein and glutamine 111 in the catalytic pocket of CypA. Mutation of alanine 53 to glutamate, as found in patients with early-onset PD, weakens the interaction of α-synuclein with CypA. Our study provides high-resolution insights into the structure of the PD-associated protein α-synuclein in complex with the most abundant cellular cyclophilin.

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