32QA | pdb_000032qa

Cryo-EM structure of Saccharomyces cerevisiae Erv14-Qdr2 complex in lipid nanodiscs (double Erv14 assembly)

PDB DOI: https://doi.org/10.2210/pdb32QA/pdb
EM Map EMD-59065: EMDB EMDataResource

Classification: MEMBRANE PROTEIN
Organism(s): Saccharomyces cerevisiae
Expression System: Saccharomyces cerevisiae
Mutation(s): No

Deposited: 2026-07-20 Released: 2026-08-19
Deposition Author(s): Adams, O., Parker, J.L., Newstead, S.
Funding Organization(s): Wellcome Trust

Experimental Data Snapshot

Method: ELECTRON MICROSCOPY
Resolution: 2.76 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

wwPDB Validation 3D Report Full Report

Validation slider image for 32QA

This is version 1.0 of the entry. See complete history.

Literature

Cornichon receptors couple membrane adaptation to cargo selection during ER export

Tunyi, J., Adams, O., Forrest, L., Parker, J.L., Newstead, S.

To be published.

Macromolecule Content

Total Structure Weight: 100.81 kDa
Atom Count: 6,504
Modeled Residue Count: 764
Deposited Residue Count: 841
Unique protein chains: 2

Macromolecules

Find similar proteins by:

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ER-derived vesicles protein ERV14	A, C	146	Saccharomyces cerevisiae	Mutation(s): 0 Gene Names: ERV14, YGL054C
UniProt
Find proteins for P53173 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P53173 Go to UniProtKB: P53173
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	P53173
Sequence Annotations Expand
Reference Sequence

Find similar proteins by:

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Quinidine resistance protein 2	B	549	Saccharomyces cerevisiae	Mutation(s): 0 Gene Names: QDR2, YIL121W
UniProt
Find proteins for P40474 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P40474 Go to UniProtKB: P40474
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	P40474
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
Y01 Query on Y01 Download:Ideal Coordinates CCD File SDF format, chain D [auth A] SDF format, chain E [auth A] SDF format, chain F [auth B] SDF format, chain G [auth B] SDF format, chain I [auth B] SDF format, chain J [auth B] SDF format, chain K [auth B] SDF format, chain M [auth B] SDF format, chain Q [auth C] MOL2 format, chain D [auth A] MOL2 format, chain E [auth A] MOL2 format, chain F [auth B] MOL2 format, chain G [auth B] MOL2 format, chain I [auth B] MOL2 format, chain J [auth B] MOL2 format, chain K [auth B] MOL2 format, chain M [auth B] MOL2 format, chain Q [auth C] mmCIF format, chain D [auth A] mmCIF format, chain E [auth A] mmCIF format, chain F [auth B] mmCIF format, chain G [auth B] mmCIF format, chain I [auth B] mmCIF format, chain J [auth B] mmCIF format, chain K [auth B] mmCIF format, chain M [auth B] mmCIF format, chain Q [auth C]	D [auth A] E [auth A] F [auth B] G [auth B] I [auth B] D [auth A], E [auth A], F [auth B], G [auth B], I [auth B], J [auth B], K [auth B], M [auth B], Q [auth C]	CHOLESTEROL HEMISUCCINATE C₃₁ H₅₀ O₄ WLNARFZDISHUGS-MIXBDBMTSA-N		Interactions Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth B] Focus chain G [auth B] Focus chain I [auth B] Focus chain J [auth B] Focus chain K [auth B] Focus chain M [auth B] Focus chain Q [auth C] Interactions & Density Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth B] Focus chain G [auth B] Focus chain I [auth B] Focus chain J [auth B] Focus chain K [auth B] Focus chain M [auth B] Focus chain Q [auth C]
NKP Query on NKP Download:Ideal Coordinates CCD File SDF format, chain L [auth B] MOL2 format, chain L [auth B] mmCIF format, chain L [auth B]	L [auth B]	(2R)-2-hydroxy-3-(phosphonooxy)propyl (9E)-octadec-9-enoate C₂₁ H₄₁ O₇ P WRGQSWVCFNIUNZ-SQUSKLHYSA-N		Interactions Focus chain L [auth B] Interactions & Density Focus chain L [auth B]
ERG Query on ERG Download:Ideal Coordinates CCD File SDF format, chain H [auth B] SDF format, chain N [auth B] SDF format, chain O [auth B] SDF format, chain P [auth B] MOL2 format, chain H [auth B] MOL2 format, chain N [auth B] MOL2 format, chain O [auth B] MOL2 format, chain P [auth B] mmCIF format, chain H [auth B] mmCIF format, chain N [auth B] mmCIF format, chain O [auth B] mmCIF format, chain P [auth B]	H [auth B], N [auth B], O [auth B], P [auth B]	ERGOSTEROL C₂₈ H₄₄ O DNVPQKQSNYMLRS-APGDWVJJSA-N		Interactions Focus chain H [auth B] Focus chain N [auth B] Focus chain O [auth B] Focus chain P [auth B] Interactions & Density Focus chain H [auth B] Focus chain N [auth B] Focus chain O [auth B] Focus chain P [auth B]

Experimental Data & Validation

Experimental Data

Method: ELECTRON MICROSCOPY
Resolution: 2.76 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.29.1-4487
MODEL REFINEMENT	Coot	0.9.8.2
MODEL REFINEMENT	ISOLDE	1.10.1
RECONSTRUCTION	cryoSPARC	4.7.1

Structure Validation

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Entry History

& Funding Information

Deposition Data

Released Date: 2026-08-19

Deposition Author(s):

Funding Organization	Location	Grant Number
Wellcome Trust	United Kingdom	219531/Z/19/Z

Revision History (Full details and data files)

Version 1.0: 2026-08-19
Type: Initial release

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.