SAXSdb — 9kqr

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

Envelope glycoprotein E2

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 12	Spike glycoprotein E1 × 4 （P03315）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	POLSF_SFV
Isoform	—
PDB entities	1, 2
Chains and sequence ranges	Author chain b； PDBConstruct 1–422； UniProt 334–755 Author chain e； PDBConstruct 1–422； UniProt 334–755 Author chain h； PDBConstruct 1–422； UniProt 334–755 Author chain k； PDBConstruct 1–422； UniProt 334–755 Author chain c； PDBConstruct 1–267； UniProt 1–267 Author chain f； PDBConstruct 1–267； UniProt 1–267 Author chain i； PDBConstruct 1–267； UniProt 1–267 Author chain l； PDBConstruct 1–267； UniProt 1–267

Spike glycoprotein E1

OrganismNot specified

UniProt P03315

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 12	Envelope glycoprotein E2 × 4 （P0DJZ6） Capsid protein × 4 （P0DJZ6）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	POLS_SFV
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain a； PDBConstruct 1–438； UniProt 816–1253 Author chain d； PDBConstruct 1–438； UniProt 816–1253 Author chain g； PDBConstruct 1–438； UniProt 816–1253 Author chain j； PDBConstruct 1–438； UniProt 816–1253

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	9kqr
Deposition date deposition_date	2024-11-26
Last revision last_revision	2025-10-22
Structure title title	Cryo-EM Structure of Mature Semliki Forest Virus
Keywords keywords	alphavirus, Semliki Forest Virus, VIRAL PROTEIN; 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.

9kqr__assembly_1__model_1

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

Download this curve (.dat)

9kqr__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9kqr__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	66.38 Å
Rg (electron density)	65.69 Å
Total Rg	65.99 Å
Atom count	62052
Residues	4084
Excluded volume	556910 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9kqr__assembly_1__model_1`	12-meric （12）	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	Envelope glycoprotein E2
Molecular weight formula_weight	46870.2 kDa
Source method src_method	nat
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	k,b,e,h
Atom count atom_count	62052

SVSQHFNVYKATRPYIAYCADCGAGHSCHSPVAIEAVRSEATDGMLKIQFSAQIGIDKSDNHDYTKIRYADGHAIENAVRSSLKVATSGDCFVHGTMGHFILAKCPPGEFLQVSIQDTRNAVRACRIQYHHDPQPVGREKFTIRPHYGKEIPCTTYQQTTAETVEEIDMHMPPDTPDRTLLSQQSGNVKITVGGKKVKYNCTCGTGNVGTTNSDMTINTCLIEQCHVSVTDHKKWQFNSPFVPRADEPARKGKVHIPFPLDNITCRVPMAREPTVIHGKREVTLHLHPDHPTLFSYRTLGEDPQYHEEWVTAAVERTIPVPVDGMEYHWGNNDPVRLWSQLTTEGKPHGWPHQIVQYYYGLYPAATVSAVVGMSLLALISIFASCYMLVAARSKCLTPYALTPGAAVPWTLGILCCAPRAHA

Entity 2 Entity 2 polymer

Description description	Capsid protein
Molecular weight formula_weight	29920.7 kDa
EC 编号 ec_number	3.4.21.90
Source method src_method	nat
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	l,c,f,i

MNYIPTQTFYGRRWRPRPAARPWPLQATPVAPVVPDFQAQQMQQLISAVNALTMRQNAIAPARPPKPKKKKTTKPKPKTQPKKINGKTQQQKKKDKQADKKKKKPGKRERMCMKIENDCIFEVKHEGKVTGYACLVGDKVMKPAHVKGVIDNADLAKLAFKKSSKYDLECAQIPVHMRSDASKYTHEKPEGHYNWHHGAVQYSGGRFTIPTGAGKPGDSGRPIFDNKGRVVAIVLGGANEGSRTALSVVTWNKDMVTRVTPEGSEEW

Entity 3 Entity 3 polymer

Description description	Spike glycoprotein E1
Molecular weight formula_weight	47488.8 kDa
Source method src_method	nat
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	j,a,d,g

YEHSTVMPNVVGFPYKAHIERPGYSPLTLQMQVVETSLEPTLNLEYITCEYKTVVPSPYVKCCGASECSTKEKPDYQCKVYTGVYPFMWGGAYCFCDSENTQLSEAYVDRSDVCRHDHASAYKAHTASLKAKVRVMYGNVNQTVDVYVNGDHAVTIGGTQFIFGPLSSAWTPFDNKIVVYKDEVFNQDFPPYGSGQPGRFGDIQSRTVESNDLYANTALKLARPSPGMVHVPYTQTPSGFKYWLKEKGTALNTKAPFGCQIKTNPVRAMNCAVGNIPVSMNLPDSAFTRIVEAPTIIDLTCTVATCTHSSDFGGVLTLTYKTNKNGDCSVHSHSNVATLQEATAKVKTAGKVTLHFSTASASPSFVVSLCSARATCSASCEPPKDHIVPYAASHSNVVFPDMSGTALSWVQKISGGLGAFAIGAILVLVVVTCIGLRR

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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	triclinic

Resolution resolution	3.73 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	739620

Cryo-EM Structure of Mature Semliki Forest Virus

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

Envelope glycoprotein E2

State in the Current Structure

Other States of the Same Protein in the Database

Spike glycoprotein E1

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

9kqr__assembly_1__model_1

9kqr__assembly_1__model_1 | I(q)

9kqr__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

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

7. Citations (1)

Cryo-EM Structure of Mature Semliki Forest Virus

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

Envelope glycoprotein E2

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 glycoprotein E1

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

9kqr__assembly_1__model_1

9kqr__assembly_1__model_1 | I(q)

9kqr__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

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

7. Citations (1)