SAXSdb — 7c8d

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1. Protein Identity and Related Structures Protein Identity & Related Structures

Angiotensin-converting enzyme 2

Felis catus

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	Spike protein S1 × 1 （P0DTC2） ZINC ION × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ACE2_FELCA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–724； UniProt 18–740

Spike protein S1

Severe acute respiratory syndrome coronavirus 2

UniProt P0DTC2

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	Angiotensin-converting enzyme 2 × 1 （Q56H28） ZINC ION × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SPIKE_SARS2
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–195； UniProt 333–527

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	7c8d
Deposition date deposition_date	2020-05-29
Structure title title	Cryo-EM structure of cat ACE2 and SARS-CoV-2 RBD
Keywords keywords	ACE2, SARS-CoV-2, Cryo-EM, complex, PROTEIN BINDING, HYDROLASE-VIRAL PROTEIN complex; HYDROLASE/VIRAL PROTEIN
Experimental Method method	ELECTRON MICROSCOPY

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

7c8d__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

7c8d__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

7c8d__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	31.03 Å
Rg (electron density)	30.52 Å
Total Rg	31.15 Å
Atom count	6359
Residues	792
Excluded volume	112690 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`7c8d__assembly_1__model_1`	dimeric （2）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Description description	Angiotensin-converting enzyme 2
Molecular weight formula_weight	85133.0 kDa
EC 编号 ec_number	3.4.17.23
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	6359

MQSTTEELAKTFLEKFNHEAEELSYQSSLASWNYNTNITDENVQKMNEAGAKWSAFYEEQSKLAKTYPLAEIHNTTVKRQLQALQQSGSSVLSADKSQRLNTILNAMSTIYSTGKACNPNNPQECLLLEPGLDDIMENSKDYNERLWAWEGWRAEVGKQLRPLYEEYVALKNEMARANNYEDYGDYWRGDYEEEWTDGYNYSRSQLIKDVEHTFTQIKPLYQHLHAYVRAKLMDTYPSRISPTGCLPAHLLGDMWGRFWTNLYPLTVPFGQKPNIDVTDAMVNQSWDARRIFKEAEKFFVSVGLPNMTQGFWENSMLTEPGDSRKVVCHPTAWDLGKGDFRIKMCTKVTMDDFLTAHHEMGHIQYDMAYAVQPFLLRNGANEGFHEAVGEIMSLSAATPNHLKTIGLLSPGFSEDSETEINFLLKQALTIVGTLPFTYMLEKWRWMVFKGEIPKEQWMQKWWEMKREIVGVVEPVPHDETYCDPASLFHVANDYSFIRYYTRTIYQFQFQEALCRIAKHEGPLHKCDISNSSEAGKKLLQMLTLGKSKPWTLALEHVVGEKKMNVTPLLKYFEPLFTWLKEQNRNSFVGWNTDWRPYADQSIKVRISLKSALGDEAYEWNDNEMYLFRSSVAYAMREYFSKVKNQTIPFVEDNVWVSNLKPRISFNFFVTASKNVSDVIPRSEVEEAIRMSRSRINDAFRLDDNSLEFLGIQPTLSPPYQPPVTHHHHHHHH

Source Source

Source organism organism	Felis catus
Common name common_name	Cat
NCBI taxonomy ID ncbi_taxonomy_id	9685
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	Spike protein S1
Molecular weight formula_weight	21873.5 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

TNLCPFGEVFNATRFASVYAWNRKRISNCVADYSVLYNSASFSTFKCYGVSPTKLNDLCFTNVYADSFVIRGDEVRQIAPGQTGKIADYNYKLPDDFTGCVIAWNSNNLDSKVGGNYNYLYRLFRKSNLKPFERDISTEIYQAGSTPCNGVEGFNCYFPLQSYGFQPTNGVGYQPYRVVVLSFELLHAPATVCGP

Source Source

Source organism organism	Severe acute respiratory syndrome coronavirus 2
Common name common_name	2019-nCoV
NCBI taxonomy ID ncbi_taxonomy_id	2697049
Host organism host_organism	Spodoptera frugiperda

Entity 3 Entity 3 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	1

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d7c8da_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.92 — Zincin-like
Superfamily Superfamily superfamily	d.92.1 — Metalloproteases ('zincins'), catalytic domain
Family Family family	d.92.1.5 — Neurolysin-like

Domain ID domain_id	d7c8db_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.318 — SARS receptor-binding domain-like
Superfamily Superfamily superfamily	d.318.1 — SARS receptor-binding domain-like
Family Family family	d.318.1.1 — SARS receptor-binding domain-like

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Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	—

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	—

Resolution resolution	3.00 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	195370

Cryo-EM structure of cat ACE2 and SARS-CoV-2 RBD

1. Protein Identity and Related Structures Protein Identity & Related Structures

Angiotensin-converting enzyme 2

State in the Current Structure

Other States of the Same Protein in the Database

Spike protein S1

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

7c8d__assembly_1__model_1

7c8d__assembly_1__model_1 | I(q)

7c8d__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (2 domains)

7. Citations (1)

Cryo-EM structure of cat ACE2 and SARS-CoV-2 RBD

1. Protein Identity and Related Structures Protein Identity & Related Structures

Angiotensin-converting enzyme 2

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Spike protein S1

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

7c8d__assembly_1__model_1

7c8d__assembly_1__model_1 | I(q)

7c8d__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (2 domains)

7. Citations (1)