SAXSdb — 3spk

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

HIV-1 protease

human immunodeficiency virus type 1

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric（2） Consistent with protein copy count	Chain A； UniProt 1–99 Chain B； UniProt 1–99	Fragment：HIV-1 protease Mutation：Q7K, L10I, M36V, M46L, I54V, I62V, L63P, A71V, V82T, I84V, L90M	TPV N-(3-{(1R)-1-[(6R)-4-HYDROXY-2-OXO-6-PHENETHYL-6-PROPYL-5,6-DIHYDRO-2H-PYRAN-3-YL]PROPYL}PHENYL)-5-(TRIFLUOROMETHYL)-2-PYRIDINESULFONAMIDE × 2	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, HANGING DROP；pH 6；298 K；0.1M MES and 2.4M ammonium sulfate, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.24 Å R-free 0.227

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB	Difference from Current Entry 3SPK	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
3OQ7 Crystal Structures of Multidrug-Resistant Clinical Isolate 769 HIV-1 Protease Variants Deposited 2010-09-02	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 1–99（99 aa） Fragment：UNP residues 1-99	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；295 K；0.3-1.0M sodium chloride in the pH range 5.5-7.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K	Resolution 1.71 Å R-free 0.223
3OQA Crystal Structures of Multidrug-Resistant Clinical Isolate 769 HIV-1 Protease Variants Deposited 2010-09-02	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 1–99（99 aa） Fragment：UNP residues 1-99	Mutation：T82S	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；295 K；0.3-1.0M sodium chloride in the pH range 5.5-7.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K	Resolution 2.25 Å R-free 0.238
3OQD Crystal Structures of Multidrug-Resistant Clinical Isolate 769 HIV-1 Protease Variants Deposited 2010-09-02	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 1–99（99 aa） Fragment：UNP residues 1-99	Mutation：T82F	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；295 K；0.3-1.0M sodium chloride in the pH range 5.5-7.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K	Resolution 1.71 Å R-free 0.229
3OTY MDR769 HIV-1 protease complexed with RT/RH hepta-peptide Deposited 2010-09-14	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 1–99（99 aa） Chain B 1–99（99 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.8；298 K；0.8M NaCl 01 M MES , pH 5.8, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.75 Å R-free 0.236
3OU1 MDR769 HIV-1 protease complexed with RH/IN hepta-peptide Deposited 2010-09-14	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 1–99（99 aa） Chain B 1–99（99 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.8；298 K；0.8M NaCl 01 M MES , pH 5.8, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.80 Å R-free 0.237
3OU3 MDR769 HIV-1 protease complexed with PR/RT hepta-peptide Deposited 2010-09-14	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 1–99（99 aa） Chain B 1–99（99 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.8；298 K；0.8M NaCl 01 M MES , pH 5.8, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.70 Å R-free 0.226
3OU4 MDR769 HIV-1 protease complexed with TF/PR hepta-peptide Deposited 2010-09-14	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 1–99（99 aa） Chain B 1–99（99 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.8；298 K；0.8M NaCl 01 M MES , pH 5.8, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.60 Å R-free 0.232
3OUA MDR769 HIV-1 protease complexed with p1/p6 hepta-peptide Deposited 2010-09-14	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 1–99（99 aa） Chain B 1–99（99 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.8；298 K；0.8M NaCl 01 M MES , pH 5.8, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.70 Å R-free 0.226
3OUB MDR769 HIV-1 protease complexed with NC/p1 hepta-peptide Deposited 2010-09-14	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 1–99（99 aa） Chain B 1–99（99 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.8；298 K；0.8M NaCl 0.1 M MES , pH 5.8, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.60 Å R-free 0.236
3OUC MDR769 HIV-1 protease complexed with p2/NC hepta-peptide Deposited 2010-09-14	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 1–99（99 aa） Chain B 1–99（99 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.8；298 K；0.8M NaCl 0.1 M MES , pH 5.8, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.00 Å R-free 0.262
3OUD MDR769 HIV-1 protease complexed with CA/p2 hepta-peptide Deposited 2010-09-14	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 1–99（99 aa） Chain B 1–99（99 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.8；298 K；0.8M NaCl 0.1 M MES , pH 5.8, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.80 Å R-free 0.244
3PJ6 Crystal Structures of Multidrug-Resistant Clinical Isolate 769 HIV-1 Protease Variants Deposited 2010-11-08	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 1–99（99 aa） Fragment：UNP residues 1-99	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.3；300 K；0.3-1.0 M NaCl, pH 5.5-7.5, VAPOR DIFFUSION, HANGING DROP, temperature 300K	Resolution 2.25 Å R-free 0.304
3R0W Crystal Structures of Multidrug-resistant HIV-1 Protease in Complex with Mechanism-Based Aspartyl Protease Inhibitors. Deposited 2011-03-09	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 1–99（99 aa） Chain B 1–99（99 aa）	Not recorded	RSY N-[(2R)-1-{[(2S,3S)-5-{[(2R)-1-{[(2S)-1-amino-4-methyl-1-oxopentan-2-yl]amino}-3-chloro-1-oxopropan-2-yl]amino}-3-hydroxy-5-oxo-1-phenylpentan-2-yl]amino}-3-methyl-1-oxobutan-2-yl]pyridine-2-carboxamide × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.2；298 K；0.3 M NaCl, 0.1 M HEPES, pH 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.70 Å R-free 0.245
3R0Y Crystal Structures of Multidrug-resistant HIV-1 Protease in Complex with Mechanism-Based Aspartyl Protease Inhibitors Deposited 2011-03-09	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 1–99（99 aa） Chain B 1–99（99 aa）	Not recorded	RSZ N-[(2S)-1-{[(2S,3S)-3-hydroxy-5-oxo-5-{[(2R)-1-oxo-3-phenyl-1-(prop-2-yn-1-ylamino)propan-2-yl]amino}-1-phenylpentan-2-yl]amino}-3-methyl-1-oxobutan-2-yl]pyridine-2-carboxamide × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.2；298 K；0.3 M NaCl, 0.1 M HEPES, pH 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.65 Å R-free 0.231
3SO9 Darunavir in Complex with a Human Immunodeficiency Virus Type 1 Protease Variant Deposited 2011-06-30	Different construct Different ligand/ion Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 1–99（99 aa） Fragment：HIV-1 protease, UNP residues 1-99 Chain B 1–99（99 aa） Fragment：HIV-1 protease, UNP residues 1-99	Mutation：Q7K, L10I, M36V, M46L, I54V, I62V, L63P, A71V, V82T, I84V, L90M Mutation：Q7K, L10I, M36V, M46L, I54V, I62V, L63P, A71V, V82T, I84V, L90M	017 (3R,3AS,6AR)-HEXAHYDROFURO[2,3-B]FURAN-3-YL(1S,2R)-3-[[(4-AMINOPHENYL)SULFONYL](ISOBUTYL)AMINO]-1-BENZYL-2-HYDROXYPROPYLCARBAMATE × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；298 K；0.1M MES and 2.4M ammonium sulfate, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.87 Å R-free 0.256
4EYR Crystal structure of multidrug-resistant clinical isolate 769 HIV-1 protease in complex with ritonavir Deposited 2012-05-01	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 1–99（99 aa） Fragment：UNP residues 1-99 Chain B 1–99（99 aa） Fragment：UNP residues 1-99	Not recorded	RIT RITONAVIR × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.8；295 K；0.8M NaCl, 0.1 M MES, pH 5.8, VAPOR DIFFUSION, HANGING DROP, temperature 295K	Resolution 1.80 Å R-free 0.226
4FAE Substrate p2/NC in Complex with a Human Immunodeficiency Virus Type 1 Protease Variant Deposited 2012-05-22	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 1–99（99 aa） Chain B 1–99（99 aa）	Mutation：D25N, D35E, I36V, M46L Mutation：D25N, D35E, I36V, M46L	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5.2；298 K；0.1 M citric acid, 2.4 M ammonium sulfate, pH 5.2, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.30 Å R-free 0.279
4FAF Substrate CA/p2 in Complex with a Human Immunodeficiency Virus Type 1 Protease Variant Deposited 2012-05-22	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric	Chain A 1–99（99 aa） Chain B 1–99（99 aa）	Mutation：D25N, D35E, I36V, M46L Mutation：D25N, D35E, I36V, M46L	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；298 K；0.1 M MES, 2.4 M ammonium sulfate, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 2.10 Å R-free 0.240
4L1A Crystallographic study of multi-drug resistant HIV-1 protease Lopinavir complex: mechanism of drug recognition and resistance Deposited 2013-06-03	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 1–99（99 aa） Chain B 1–99（99 aa）	Not recorded	AB1 N-{1-BENZYL-4-[2-(2,6-DIMETHYL-PHENOXY)-ACETYLAMINO]-3-HYDROXY-5-PHENYL-PENTYL}-3-METHYL-2-(2-OXO-TETRAHYDRO-PYRIMIDIN-1-YL)-BUTYRAMIDE × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.6；298 K；The hanging drop vapor diffusion method was used to form the bipyramidal crystals of the MDR 769 protease. Using a grid screen consisting of sodium chloride (0.7 to 1.4 M) and MES-HEPES buffer (pH 5.5 to 8.1), the HIV-1 protease substrate complex crystals formed overnight at 22 C. Routinely, 0.2 mm crystals, in the longest dimension, were obtained after 14 days of incubation. In each well, there were two droplets, containing 1 lL of protease substrate mixture, 1 lL of reservoir solution and 2 lL of protease substrate mixture, 1 lL of reservoir solution, respectively, 07 mL of well solution., VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.90 Å R-free 0.260
4NKK Crystal structure of a multi-drug resistant clinical isolate-769 HIV-1 protease variant that is resistant to the dimerization inhibitory activity of TLF-PafF Deposited 2013-11-12	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 1–99（99 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.3；298 K；0.3-1.0 M NaCl (precipitant), pH 7.3, VAPOR DIFFUSION, HANGING DROP, temperature 298K	Resolution 1.80 Å R-free 0.249

20 other PDB entries and 20 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	Q000H7_9HIV1
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–99； UniProt 1–99 Author chain B； PDBConstruct 1–99； UniProt 1–99

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	3spk
Deposition date deposition_date	2011-07-01
Structure title title	Tipranavir in Complex with a Human Immunodeficiency Virus Type 1 Protease Variant
Keywords keywords	tipranavir, multi-drug resistant HIV-1 protease, HYDORLASE-HYDORLASE INHIBITOR complex; HYDORLASE/HYDORLASE INHIBITOR
Experimental Method method	X-RAY DIFFRACTION

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3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier	18.19 Å
Radius of gyration Rg (electron density) rg_electron	17.23 Å
Forward intensity I(0) i0	8015310.00
Molecular weight molecular_weight	22128.0 kDa
Excluded volume excluded_volume	28381 Å³
Envelope volume envelope_volume	32033 Å³
Hydration-shell volume shell_volume	15863 Å³
Envelope diameter envelope_diameter	64.7 Å
Shell Rg shell_rg	23.06 Å
Envelope Rg envelope_rg	17.69 Å
Shape Rg shape_rg	17.25 Å
Total Rg total_rg	18.21 Å
Total atoms total_atoms	1556
Residues n_residues	198
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax	61.9 Å
Rg (real space) rg_real	18.18 Å
Rg uncertainty (real space) rg_real_error	0.40 Å
I(0) (real space) i0_real	8.0150e+06
I(0) uncertainty (real space) i0_real_error	9.3320e+04
Rg (reciprocal space) rg_reciprocal	18.18 Å
I(0) (reciprocal space) i0_reciprocal	8015000.0000
Solution quality estimate total_estimate	0.7806
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	3
Primary peak position r_peak_primary	20.9 Å
Skewness Skewness skewness	0.403
Kurtosis Kurtosis kurtosis	-0.150
Angular range angular_range	— – 0.4350 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	3819000.0000
Real-space data points n_real_points	75
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.720; Stabil: 0.998; Sysdev: 1.000; Positv: 1.000; Valcen: 0.992; Smooth: 0.000

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (3)

Entity 1 Entity 1 polymer

Description description	HIV-1 protease
Molecular weight formula_weight	10770.7 kDa
EC 编号 ec_number	3.4.23.16
Mutation mutation	Q7K, L10I, M36V, M46L, I54V, I62V, L63P, A71V, V82T, I84V, L90M
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	2065

PQITLWKRPIVTIKIGGQLKEALLNTGADDTVLEEVNLPGRWKPKLIGGIGGFVKVRQYDQVPIEICGHKVIGTVLVGPTPTNVIGRNLMTQIGCTLNF

来源 Source

来源生物 organism	human immunodeficiency virus type 1
通用名 common_name	HIV
NCBI Class编号 ncbi_taxonomy_id	11676
宿主生物 host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	;N-(3-{(1R)-1-[(6R)-4-HYDROXY-2-OXO-6-PHENETHYL-6-PROPYL-5,6-DIHYDRO-2H-PYRAN-3-YL]PROPYL}PHENYL)-5-(TRIFLUOROMETHYL)-2-PYRIDINESULFONAMIDE ;
Molecular weight formula_weight	602.7 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	351

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7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_id	d3spka_
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	d3spkb_
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	3spkA00
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	3spkB00
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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8. Citations (1)

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Unit-cell length a length_a	63.119 Å
Unit-cell length b length_b	63.119 Å
Unit-cell length c length_c	83.540 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	12

Space group space_group	P 61
Space-group number int_tables_number	169
Crystal system crystal_system	—

Resolution resolution	1.240 Å
Low-resolution limit resolution_low	29.523 Å
R factor r_factor	0.1766
R_work r_work	0.1740
R_free r_free	0.2270

fit	/app/data/saxs_computation/sp/3spk/3spk.fit
pddf	/app/data/pr_computation/sp/3spk/3spk.pr.out
profile	/app/data/saxs_computation/sp/3spk/3spk.dat

Tipranavir in Complex with a Human Immunodeficiency Virus Type 1 Protease Variant

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

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution