SAXSdb — 9sjq

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

Transmembrane protein gp41,Y26L-covNHR

Human immunodeficiency virus type 1 (BRU ISOLATE)

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein monomer	Monomer	Protein 1	SULFATE ION × 3 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ENV_HV1BR
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 2–27； UniProt 643–668 Author chain A； PDBConstruct 31–83； UniProt 545–597 Author chain A； PDBConstruct 146–194； UniProt 549–597

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	9sjq
Deposition date deposition_date	2025-08-31
Last revision last_revision	2026-05-13
Structure title title	Single-chain chimeric protein mimicking the interaction between HR1 and HR2 in HIV gp41 (pH 6.5)
Keywords keywords	GP41, HIV-1, 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.

9sjq__assembly_1__model_1

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

Download this curve (.dat)

9sjq__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9sjq__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	24.28 Å
Rg (electron density)	24.32 Å
Total Rg	24.68 Å
Atom count	3215
Residues	193
Excluded volume	28151 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9sjq__assembly_1__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	Transmembrane protein gp41,Y26L-covNHR
Molecular weight formula_weight	23678.8 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	3386

MYTSLIHSLIEESQNQQEKNEQELLELGEGEARQELSGIVQKQNNLLRQIEAQQHLLQLTVSKIKQLQARILAVERYLKDQQLGKGNQPQQDKLYREVALIRAQLQKIESETLQLLHQQAEIERELNNQEQEIGSLKQRGLIDGPLLSGIDQQQNNLKRAIEAQKHLLQLTVWGIKQLQARILAVERYLKDQQLGGGGSHHHHHH

Source Source

Source organism organism	Human immunodeficiency virus type 1 (BRU ISOLATE)
NCBI taxonomy ID ncbi_taxonomy_id	11686
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	143

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Unit-cell length a length_a	53.755 Å
Unit-cell length b length_b	79.713 Å
Unit-cell length c length_c	62.900 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	94.20 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	4

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	monoclinic

Resolution resolution	1.500 Å
Low-resolution limit resolution_low	19.930 Å
R factor r_factor	0.1822
R_work r_work	0.1806
R_free r_free	0.2123

Single-chain chimeric protein mimicking the interaction between HR1 and HR2 in HIV gp41 (pH 6.5)

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

Transmembrane protein gp41,Y26L-covNHR

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

9sjq__assembly_1__model_1

9sjq__assembly_1__model_1 | I(q)

9sjq__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

7. Citations (1)

Single-chain chimeric protein mimicking the interaction between HR1 and HR2 in HIV gp41 (pH 6.5)

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

Transmembrane protein gp41,Y26L-covNHR

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

9sjq__assembly_1__model_1

9sjq__assembly_1__model_1 | I(q)

9sjq__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

7. Citations (1)