SAXSdb — 6b38

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

HIV-1 Protease

Human immunodeficiency virus 1

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 2	CHLORIDE ION × 3 N-(3-fluoro-2-{2-[(2S,6R)-6-methyl-1-(phenylsulfonyl)piperazin-2-yl]ethyl}phenyl)-3,3-bis(4-fluorophenyl)propanamide × 2 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	POL_HV1B5
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–99； UniProt 501–599 Author chain B； PDBConstruct 1–99； UniProt 501–599

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	6b38
Deposition date deposition_date	2017-09-21
Structure title title	Crystal Structure of HIV Protease complexed with N-(3-fluoro-2-(2-((2S,6R)-6-methyl-1-(phenylsulfonyl)piperazin-2-yl)ethyl)phenyl)-3,3-bis(4-fluorophenyl)propanamide
Keywords keywords	HIV, protease, VIRAL PROTEIN, VIRAL PROTEIN-INHIBITOR complex; VIRAL PROTEIN/INHIBITOR
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.

6b38__assembly_1__model_1

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

Download this curve (.dat)

6b38__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

6b38__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	18.16 Å
Rg (electron density)	17.16 Å
Total Rg	18.21 Å
Atom count	1563
Residues	198
Excluded volume	28633 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`6b38__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 (4)

Entity 1 Entity 1 polymer

Description description	HIV-1 Protease
Molecular weight formula_weight	10804.8 kDa
EC 编号 ec_number	3.4.23.16
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	1772

PQITLWKRPLVTIKIGGQLKEALLDTGADDTVIEEMSLPGRWKPKMIGGIGGFIKVRQYDQIIIEICGHKAIGTVLVGPTPVNIIGRNLLTQIGCTLNF

Source Source

Source organism organism	Human immunodeficiency virus 1
Common name common_name	HIV-1
NCBI taxonomy ID ncbi_taxonomy_id	11676
Host organism host_organism	Human immunodeficiency virus 1

Entity 2 Entity 2 non-polymer

Description description	CHLORIDE ION
Molecular weight formula_weight	35.5 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 3 Entity 3 non-polymer

Description description	N-(3-fluoro-2-{2-[(2S,6R)-6-methyl-1-(phenylsulfonyl)piperazin-2-yl]ethyl}phenyl)-3,3-bis(4-fluorophenyl)propanamide
Molecular weight formula_weight	621.7 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	165

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d6b38a_
Class class	b — All beta proteins
Fold Fold fold	b.50 — Acid proteases
Superfamily Superfamily superfamily	b.50.1 — Acid proteases
Family Family family	b.50.1.1 — Retroviral protease (retropepsin)

Domain ID domain_id	d6b38b_
Class class	b — All beta proteins
Fold Fold fold	b.50 — Acid proteases
Superfamily Superfamily superfamily	b.50.1 — Acid proteases
Family Family family	b.50.1.1 — Retroviral protease (retropepsin)

CATH v4.4 (2 domains)

Domain ID domain_id	6b38A00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	70 — Cathepsin D, subunit A; domain 1
Homologous superfamily homologous superfamily	10 — Acid Proteases

Domain ID domain_id	6b38B00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	70 — Cathepsin D, subunit A; domain 1
Homologous superfamily homologous superfamily	10 — Acid Proteases

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Unit-cell length a length_a	58.330 Å
Unit-cell length b length_b	85.780 Å
Unit-cell length c length_c	46.550 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 2
Space-group number int_tables_number	18
Crystal system crystal_system	—

Resolution resolution	1.480 Å
Low-resolution limit resolution_low	21.440 Å
R factor r_factor	0.1840
R_work r_work	0.1830
R_free r_free	0.1960

Crystal Structure of HIV Protease complexed with N-(3-fluoro-2-(2-((2S,6R)-6-methyl-1-(phenylsulfonyl)piperazin-2-yl)ethyl)phenyl)-3,3-bis(4-fluorophenyl)propanamide

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

HIV-1 Protease

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

6b38__assembly_1__model_1

6b38__assembly_1__model_1 | I(q)

6b38__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)

Crystal Structure of HIV Protease complexed with N-(3-fluoro-2-(2-((2S,6R)-6-methyl-1-(phenylsulfonyl)piperazin-2-yl)ethyl)phenyl)-3,3-bis(4-fluorophenyl)propanamide

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

HIV-1 Protease

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

6b38__assembly_1__model_1

6b38__assembly_1__model_1 | I(q)

6b38__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 (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

CATH v4.4 (2 domains)

7. Citations (1)