1kj4

SUBSTRATE SHAPE DETERMINES SPECIFICITY OF RECOGNITION RECOGNITION FOR HIV-1 PROTEASE: ANALYSIS OF CRYSTAL STRUCTURES OF SIX SUBSTRATE COMPLEXES

Method: X-RAY DIFFRACTION Dmax: 72.3 Å Quality: EXCELLENT

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

POL polyprotein

Human immunodeficiency virus 1

UniProt P03369

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 heterocomplex Heteromer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain A; UniProt 57–155 Chain B; UniProt 57–155 Fragment:HIV-1 PROTEASE, RESIDUES 57-155 Mutation:D25N,Q7K gag polyprotein × 1 (P20875) ACT ACETATE ION × 7 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;298 K;Ammonium Sulphate, SODIUM PHOSPHATE, SODIUM CITRATE, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.90 Å R-free 0.248
2 Protein heterocomplex Heteromer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain C; UniProt 57–155 Chain D; UniProt 57–155 Fragment:HIV-1 PROTEASE, RESIDUES 57-155 Mutation:D25N,Q7K gag polyprotein × 1 (P20875) ACT ACETATE ION × 5 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;298 K;Ammonium Sulphate, SODIUM PHOSPHATE, SODIUM CITRATE, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.90 Å R-free 0.248
3 Protein heterocomplex Heteromer Protein × 24 PDB declaration: 24-meric(24) Consistent with protein copy count Chain A; UniProt 57–155 Chain B; UniProt 57–155 Chain C; UniProt 57–155 Chain D; UniProt 57–155 Fragment:HIV-1 PROTEASE, RESIDUES 57-155 Mutation:D25N,Q7K gag polyprotein × 8 (P20875) ACT ACETATE ION × 48 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;298 K;Ammonium Sulphate, SODIUM PHOSPHATE, SODIUM CITRATE, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.90 Å R-free 0.248

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.

80 other PDB entries and 94 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name POL_HV1A2
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–99; UniProt 57–155 Author chain B; PDBConstruct 1–99; UniProt 57–155 Author chain C; PDBConstruct 1–99; UniProt 57–155 Author chain D; PDBConstruct 1–99; UniProt 57–155

gag polyprotein

OrganismNot specified

UniProt P20875

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 heterocomplex Heteromer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain P; UniProt 127–136 Fragment:MATRIX-CAPSID SUBSTRATE PEPTIDE, RESIDUES 127-136 POL polyprotein × 2 (P03369) ACT ACETATE ION × 7 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;298 K;Ammonium Sulphate, SODIUM PHOSPHATE, SODIUM CITRATE, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.90 Å R-free 0.248
2 Protein heterocomplex Heteromer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain S; UniProt 127–136 Fragment:MATRIX-CAPSID SUBSTRATE PEPTIDE, RESIDUES 127-136 POL polyprotein × 2 (P03369) ACT ACETATE ION × 5 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;298 K;Ammonium Sulphate, SODIUM PHOSPHATE, SODIUM CITRATE, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.90 Å R-free 0.248
3 Protein heterocomplex Heteromer Protein × 24 PDB declaration: 24-meric(24) Consistent with protein copy count Chain P; UniProt 127–136 Chain S; UniProt 127–136 Fragment:MATRIX-CAPSID SUBSTRATE PEPTIDE, RESIDUES 127-136 POL polyprotein × 16 (P03369) ACT ACETATE ION × 48 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;298 K;Ammonium Sulphate, SODIUM PHOSPHATE, SODIUM CITRATE, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 2.90 Å R-free 0.248

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.

2 other PDB entries and 2 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name POL_HV1JR
Isoform
PDB entities 2
Chains and sequence ranges Author chain P; PDBConstruct 1–10; UniProt 127–136 Author chain S; PDBConstruct 1–10; UniProt 127–136

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.

SAXS scattering curve SAXS Profile

SAXS profile for 1kj4

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1kj4
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1kj4
Deposition date deposition_date2001-12-04
Structure title titleSUBSTRATE SHAPE DETERMINES SPECIFICITY OF RECOGNITION RECOGNITION FOR HIV-1 PROTEASE: ANALYSIS OF CRYSTAL STRUCTURES OF SIX SUBSTRATE COMPLEXES
Keywords keywordsMARIX-CAPSID, SUBSTRATE RECOGNITION, HYDROLASE; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier23.08
Radius of gyration Rg (electron density) rg_electron22.11
Forward intensity I(0) i030029400.00
Molecular weight molecular_weight44086.0 kDa
Excluded volume excluded_volume56101 ų
Envelope volume envelope_volume66098 ų
Hydration-shell volume shell_volume24717 ų
Envelope diameter envelope_diameter75.8
Shell Rg shell_rg28.86
Envelope Rg envelope_rg22.07
Shape Rg shape_rg22.13
Total Rg total_rg22.90
Total atoms total_atoms3099
Residues n_residues411
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

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

Maximum dimension Dmax dmax72.3
Rg (real space) rg_real22.96
Rg uncertainty (real space) rg_real_error0.32
I(0) (real space) i0_real3.0030e+07
I(0) uncertainty (real space) i0_real_error3.6510e+05
Rg (reciprocal space) rg_reciprocal22.99
I(0) (reciprocal space) i0_reciprocal30030000.0000
Solution quality estimate total_estimate0.9063
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary28.9
Skewness Skewness skewness0.141
Kurtosis Kurtosis kurtosis-0.609
Angular range angular_range— – 0.3450 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha18380000.0000
Real-space data points n_real_points66
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.929; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.999; Smooth: 0.992

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd1kj4a_
Class classb — All beta proteins
Fold Fold foldb.50 — Acid proteases
Superfamily Superfamily superfamilyb.50.1 — Acid proteases
Family Family familyb.50.1.1 — Retroviral protease (retropepsin)
Domain ID domain_idd1kj4b_
Class classb — All beta proteins
Fold Fold foldb.50 — Acid proteases
Superfamily Superfamily superfamilyb.50.1 — Acid proteases
Family Family familyb.50.1.1 — Retroviral protease (retropepsin)
Domain ID domain_idd1kj4c_
Class classb — All beta proteins
Fold Fold foldb.50 — Acid proteases
Superfamily Superfamily superfamilyb.50.1 — Acid proteases
Family Family familyb.50.1.1 — Retroviral protease (retropepsin)
Domain ID domain_idd1kj4d_
Class classb — All beta proteins
Fold Fold foldb.50 — Acid proteases
Superfamily Superfamily superfamilyb.50.1 — Acid proteases
Family Family familyb.50.1.1 — Retroviral protease (retropepsin)

CATH v4.4 (4 domains)

Domain ID domain_id1kj4A00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology70 — Cathepsin D, subunit A; domain 1
Homologous superfamily homologous superfamily10 — Acid Proteases
Domain ID domain_id1kj4B00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology70 — Cathepsin D, subunit A; domain 1
Homologous superfamily homologous superfamily10 — Acid Proteases
Domain ID domain_id1kj4C00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology70 — Cathepsin D, subunit A; domain 1
Homologous superfamily homologous superfamily10 — Acid Proteases
Domain ID domain_id1kj4D00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology70 — Cathepsin D, subunit A; domain 1
Homologous superfamily homologous superfamily10 — Acid Proteases

8. Citations (1)

9. Files and Curves (10)