SAXSdb — 9kwy

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

Processed angiotensin-converting enzyme 2

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 4 其他Polymer 1	Spike protein S1 × 1 （P0DTC2） 1C4 light chain × 1 1C4 heavy chain × 1 ;beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose ; × 1 2-acetamido-2-deoxy-beta-D-glucopyranose × 2	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 1–581； UniProt 19–599

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	Other combination	Heteromer	Protein 4 其他Polymer 1	Processed angiotensin-converting enzyme 2 × 1 （Q56H28） 1C4 light chain × 1 1C4 heavy chain × 1 ;beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose ; × 1 2-acetamido-2-deoxy-beta-D-glucopyranose × 2	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 G； PDBConstruct 1–184； UniProt 334–517

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	9kwy
Deposition date deposition_date	2024-12-06
Structure title title	Cryo-EM structure of SARS-CoV-2 RBD in complex with ACE2 and mAb 1C4
Keywords keywords	SARS-CoV-2, Neutralizing antibody, Cryo-EM, VIRAL PROTEIN/HYDROLASE, VIRAL PROTEIN-HYDROLASE complex; VIRAL PROTEIN/HYDROLASE
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.

9kwy__assembly_1__model_1

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

Download this curve (.dat)

9kwy__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9kwy__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	34.19 Å
Rg (electron density)	33.83 Å
Total Rg	34.44 Å
Atom count	7342
Residues	982
Excluded volume	129740 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9kwy__assembly_1__model_1`	tetrameric （4）	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 (6)

Entity 1 Entity 1 polymer

Description description	Processed angiotensin-converting enzyme 2
Molecular weight formula_weight	67344.0 kDa
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	7342

STTEELAKTFLEKFNHEAEELSYQSSLASWNYNTNITDENVQKMNEAGAKWSAFYEEQSKLAKTYPLAEIHNTTVKRQLQALQQSGSSVLSADKSQRLNTILNAMSTIYSTGKACNPNNPQECLLLEPGLDDIMENSKDYNERLWAWEGWRAEVGKQLRPLYEEYVALKNEMARANNYEDYGDYWRGDYEEEWTDGYNYSRSQLIKDVEHTFTQIKPLYQHLHAYVRAKLMDTYPSRISPTGCLPAHLLGDMWGRFWTNLYPLTVPFGQKPNIDVTDAMVNQSWDARRIFKEAEKFFVSVGLPNMTQGFWENSMLTEPGDSRKVVCHPTAWDLGKGDFRIKMCTKVTMDDFLTAHHEMGHIQYDMAYAVQPFLLRNGANEGFHEAVGEIMSLSAATPNHLKTIGLLSPGFSEDSETEINFLLKQALTIVGTLPFTYMLEKWRWMVFKGEIPKEQWMQKWWEMKREIVGVVEPVPHDETYCDPASLFHVANDYSFIRYYTRTIYQFQFQEALCRIAKHEGPLHKCDISNSSEAGKKLLQMLTLGKSKPWTLALEHVVGEKKMNVTPLLKYFEPLFTWLKEQN

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Homo sapiens

Entity 2 Entity 2 polymer

Description description	Spike protein S1
Molecular weight formula_weight	21026.5 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	G

NLCPFGEVFNATRFASVYAWNRKRISNCVADYSVLYNSASFSTFKCYGVSPTKLNDLCFTNVYADSFVIRGDEVRQIAPGQTGKIADYNYKLPDDFTGCVIAWNSNNLDSKVGGNYNYLYRLFRKSNLKPFERDISTEIYQAGSTPCNGVEGFNCYFPLQSYGFQPTNGVGYQPYRVVVLSFELVC

Source Source

Source organism organism	Severe acute respiratory syndrome coronavirus 2
Common name common_name	2019-nCoV, SARS-CoV-2
NCBI taxonomy ID ncbi_taxonomy_id	2697049
Host organism host_organism	Homo sapiens

Entity 3 Entity 3 polymer

Description description	1C4 light chain
Molecular weight formula_weight	11642.9 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

DIVLTQSPATLSVTPGDNVSLSCRASQIISNNLHWYQQKSHESPRLLIKYASQSISGIPSRFSGSGSGTDFTLSINSVETEDFGMYFCQQSNTWPLTCGSGTKLELN

Entity 4 Entity 4 polymer

Description description	1C4 heavy chain
Molecular weight formula_weight	13384.9 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C

QIQLVQSGPELKKPGETVKISCKASGYTFTDYGLNWVKQAPGKGLKWMGWINTYSGEPTYNDEFRGRFAFSLETSTITAYLKINNLKNEDTATYFCARGGNWDWYFDVWGAGTTVTVSS

Entity 5 Entity 5 branched

Description description	;beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose ;
Molecular weight formula_weight	732.7 kDa
Source method src_method	man
Copy count entity_count	1

Entity 6 Entity 6 non-polymer

Description description	2-acetamido-2-deoxy-beta-D-glucopyranose
Molecular weight formula_weight	221.2 kDa
Source method src_method	syn
Copy count entity_count	2

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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	2.82 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	182640

Cryo-EM structure of SARS-CoV-2 RBD in complex with ACE2 and mAb 1C4

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

Processed 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

9kwy__assembly_1__model_1

9kwy__assembly_1__model_1 | I(q)

9kwy__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 (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 polymer

Polymer Polymer

Entity 4 Entity 4 polymer

Polymer Polymer

Entity 5 Entity 5 branched

Entity 6 Entity 6 non-polymer

7. Citations (1)

Cryo-EM structure of SARS-CoV-2 RBD in complex with ACE2 and mAb 1C4

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

Processed 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

9kwy__assembly_1__model_1

9kwy__assembly_1__model_1 | I(q)

9kwy__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 (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 polymer

Polymer Polymer

Entity 4 Entity 4 polymer

Polymer Polymer

Entity 5 Entity 5 branched

Entity 6 Entity 6 non-polymer

7. Citations (1)