SAXSdb — 1em9

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

GAG POLYPROTEIN CAPSID PROTEIN P27

Rous sarcoma virus - Prague C

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	MAGNESIUM ION × 1 water × 1	Consistent with protein count
2	Protein monomer	Monomer	Protein 1	water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	GAG_RSVP
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–154； UniProt 240–393 Author chain B； PDBConstruct 1–154； UniProt 240–393

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	1em9
Deposition date deposition_date	2000-03-16
Structure title title	ROUS SARCOMA VIRUS CAPSID PROTEIN: N-TERMINAL DOMAIN
Keywords keywords	VIRUS/VIRAL PROTEIN, Viral protein; VIRAL PROTEIN
Experimental Method method	X-RAY DIFFRACTION

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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.

1em9__assembly_1__model_1

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

Download this curve (.dat)

1em9__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1em9__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	16.75 Å
Rg (electron density)	15.52 Å
Total Rg	16.63 Å
Atom count	1108
Residues	147
Excluded volume	19889 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1em9__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1em9__assembly_2__model_1`	monomeric （1）	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	GAG POLYPROTEIN CAPSID PROTEIN P27
Molecular weight formula_weight	16498.1 kDa
Source method src_method	man
Copy count entity_count	2

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B
Atom count atom_count	2257

PVVIKTEGPAWTPLEPKLITRLADTVRTKGLRSPITMAEVEALMSSPLLPHDVTNLMRVILGPAPYALWMDAWGVQLQTVIAAATRDPRHPANGQGRGERTNLNRLKGLADGMVGNPQGQAALLRPGELVAITASALQAFREVARLAEPAGPWA

Source Source

Source organism organism	Rous sarcoma virus - Prague C
NCBI taxonomy ID ncbi_taxonomy_id	11888
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	101

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d1em9a_
Class class	a — All alpha proteins
Fold Fold fold	a.73 — Retrovirus capsid protein, N-terminal core domain
Superfamily Superfamily superfamily	a.73.1 — Retrovirus capsid protein, N-terminal core domain
Family Family family	a.73.1.1 — Retrovirus capsid protein, N-terminal core domain

Domain ID domain_id	d1em9b_
Class class	a — All alpha proteins
Fold Fold fold	a.73 — Retrovirus capsid protein, N-terminal core domain
Superfamily Superfamily superfamily	a.73.1 — Retrovirus capsid protein, N-terminal core domain
Family Family family	a.73.1.1 — Retrovirus capsid protein, N-terminal core domain

CATH v4.4 (2 domains)

Domain ID domain_id	1em9A00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	375 — Human Immunodeficiency Virus Type 1 Capsid Protein
Homologous superfamily homologous superfamily	10 — Human Immunodeficiency Virus Type 1 Capsid Protein

Domain ID domain_id	1em9B00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	375 — Human Immunodeficiency Virus Type 1 Capsid Protein
Homologous superfamily homologous superfamily	10 — Human Immunodeficiency Virus Type 1 Capsid Protein

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Unit-cell length a length_a	40.500 Å
Unit-cell length b length_b	64.500 Å
Unit-cell length c length_c	108.900 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	8

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.050 Å
Low-resolution limit resolution_low	55.500 Å
R factor r_factor	—
R_work r_work	0.2470
R_free r_free	0.2710

ROUS SARCOMA VIRUS CAPSID PROTEIN: N-TERMINAL DOMAIN

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

GAG POLYPROTEIN CAPSID PROTEIN P27

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

1em9__assembly_1__model_1

1em9__assembly_1__model_1 | I(q)

1em9__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

ROUS SARCOMA VIRUS CAPSID PROTEIN: N-TERMINAL DOMAIN

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

GAG POLYPROTEIN CAPSID PROTEIN P27

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

1em9__assembly_1__model_1

1em9__assembly_1__model_1 | I(q)

1em9__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)