SAXSdb — 9ykp

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

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	SULFATE ION × 5 ;(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl [(2S,3R)-3-hydroxy-4-{[(1S)-1-hydroxy-2,3-dihydro-1H-indene-5-sulfonyl](2-methylpropyl)amino}-1-phenylbutan-2-yl]carbamate ; × 1 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	POL_HV1BR
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	9ykp
Deposition date deposition_date	2025-10-07
Structure title title	HIV-1 Protease WT (NL4-3) with Inhibitor NR01-141
Keywords keywords	;HIV, NL4-3 PROTEASE, DRUG RESISTANCE, PROTEASE INHIBITOR, COMPLEX, HYDROLASE INHIBITOR COMPLEX, HYDROLASE, HYDROLASE-HYDROLASE INHIBITOR COMPLEX, VIRAL PROTEIN, HYDROLASE-INHIBITOR complex ;; HYDROLASE/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.

9ykp__assembly_1__model_1

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

Download this curve (.dat)

9ykp__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9ykp__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	18.08 Å
Rg (electron density)	17.00 Å
Total Rg	17.91 Å
Atom count	3114
Residues	198
Excluded volume	27989 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9ykp__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	Protease
Molecular weight formula_weight	10831.8 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	B,A
Atom count atom_count	3280

PQITLWKRPLVTIKIGGQLKEALLDTGADDTVLEEMNLPGRWKPKMIGGIGGFIKVRQYDQILIEICGHKAIGTVLVGPTPVNIIGRNLLTQIGCTLNF

Source Source

Source organism organism	Human immunodeficiency virus 1
NCBI taxonomy ID ncbi_taxonomy_id	11676
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	5

Entity 3 Entity 3 non-polymer

Description description	;(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl [(2S,3R)-3-hydroxy-4-{[(1S)-1-hydroxy-2,3-dihydro-1H-indene-5-sulfonyl](2-methylpropyl)amino}-1-phenylbutan-2-yl]carbamate ;
Molecular weight formula_weight	588.7 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	166

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Unit-cell length a length_a	51.029 Å
Unit-cell length b length_b	58.508 Å
Unit-cell length c length_c	62.116 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	orthorhombic

Resolution resolution	1.960 Å
Low-resolution limit resolution_low	23.600 Å
R factor r_factor	0.1830
R_work r_work	0.1809
R_free r_free	0.2267

HIV-1 Protease WT (NL4-3) with Inhibitor NR01-141

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

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

9ykp__assembly_1__model_1

9ykp__assembly_1__model_1 | I(q)

9ykp__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

7. Citations (1)

HIV-1 Protease WT (NL4-3) with Inhibitor NR01-141

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

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

9ykp__assembly_1__model_1

9ykp__assembly_1__model_1 | I(q)

9ykp__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

7. Citations (1)