27KF | pdb_000027kf

Cryo-EM structure of Tundra swan ACE2 complexed with SARS-CoV-2 RBD

PDB DOI: https://doi.org/10.2210/pdb27KF/pdb
EM Map EMD-81218: EMDB EMDataResource

Classification: VIRAL PROTEIN
Organism(s): Cygnus columbianus, Severe acute respiratory syndrome coronavirus 2
Expression System: Homo sapiens
Mutation(s): Yes

Deposited: 2026-06-04 Released: 2026-06-17
Deposition Author(s): Gao, F.G., Liu, S.
Funding Organization(s): National Natural Science Foundation of China (NSFC)

Experimental Data Snapshot

Method: ELECTRON MICROSCOPY
Resolution: 3.40 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

wwPDB Validation 3D Report Full Report

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

Literature

Cryo-EM structure of Tundra swan ACE2 complexed with SARS-CoV-2 RBD

Gao, F.G., Liu, S.

To be published.

Macromolecule Content

Total Structure Weight: 91.31 kDa
Atom Count: 6,433
Modeled Residue Count: 792
Deposited Residue Count: 792
Unique protein chains: 2

Macromolecules

Find similar proteins by:

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Tundra swan ACE2	A	597	Cygnus columbianus	Mutation(s): 0

Find similar proteins by:

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Spike protein S1	B	195	Severe acute respiratory syndrome coronavirus 2	Mutation(s): 3 Gene Names: S, 2
UniProt
Find proteins for P0DTC2 (Severe acute respiratory syndrome coronavirus 2) Explore P0DTC2 Go to UniProtKB: P0DTC2
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	P0DTC2
Sequence Annotations Expand
Reference Sequence

Experimental Data & Validation

Experimental Data

Method: ELECTRON MICROSCOPY
Resolution: 3.40 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX
RECONSTRUCTION	RELION	3.0

Structure Validation

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Entry History

& Funding Information

Deposition Data

Released Date: 2026-06-17

Deposition Author(s):

Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	--

Revision History (Full details and data files)

Version 1.0: 2026-06-17
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.