1ak4

HUMAN CYCLOPHILIN A BOUND TO THE AMINO-TERMINAL DOMAIN OF HIV-1 CAPSID

Method: X-RAY DIFFRACTION Dmax: 91.6 Å Quality: EXCELLENT

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

CYCLOPHILIN A

Homo sapiens

UniProt P62937

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 × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 1–164 Not recorded HIV-1 CAPSID × 1 (P12497) X-RAY DIFFRACTION X-ray crystallization conditions:pH 7;THE PROTEIN SOLUTION WAS 0.25 MM CYPA AND 0.25 MM CA(151) IN 10 MM TRISHCL (PH 8.0) AND 1 MM 2-MERCAPTOETHANOL. THE RESERVOIR SOLUTION WAS 1ML OF 1.0 M LICL, 0.1 M BICINE (PH 7.0), AND 22% POLYETHYLENE GLYCOL 8000. THE INITIAL DROP WAS 6 MICROL OF A 1:1 MIX OF PROTEIN AND RESERVOIR SOLUTIONS. Resolution 2.36 Å R-free 0.306
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain B; UniProt 1–164 Not recorded HIV-1 CAPSID × 1 (P12497) X-RAY DIFFRACTION X-ray crystallization conditions:pH 7;THE PROTEIN SOLUTION WAS 0.25 MM CYPA AND 0.25 MM CA(151) IN 10 MM TRISHCL (PH 8.0) AND 1 MM 2-MERCAPTOETHANOL. THE RESERVOIR SOLUTION WAS 1ML OF 1.0 M LICL, 0.1 M BICINE (PH 7.0), AND 22% POLYETHYLENE GLYCOL 8000. THE INITIAL DROP WAS 6 MICROL OF A 1:1 MIX OF PROTEIN AND RESERVOIR SOLUTIONS. Resolution 2.36 Å R-free 0.306

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.

183 other PDB entries and 257 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name PPIA_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 2–165; UniProt 1–164 Author chain B; PDBConstruct 2–165; UniProt 1–164

HIV-1 CAPSID

Human immunodeficiency virus 1

UniProt P12497

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 × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain D; UniProt 132–276 Fragment:N-TERMINAL DOMAIN Mutation:DELETION MUTANT DEL(152-231) CYCLOPHILIN A × 1 (P62937) X-RAY DIFFRACTION X-ray crystallization conditions:pH 7;THE PROTEIN SOLUTION WAS 0.25 MM CYPA AND 0.25 MM CA(151) IN 10 MM TRISHCL (PH 8.0) AND 1 MM 2-MERCAPTOETHANOL. THE RESERVOIR SOLUTION WAS 1ML OF 1.0 M LICL, 0.1 M BICINE (PH 7.0), AND 22% POLYETHYLENE GLYCOL 8000. THE INITIAL DROP WAS 6 MICROL OF A 1:1 MIX OF PROTEIN AND RESERVOIR SOLUTIONS. Resolution 2.36 Å R-free 0.306
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain C; UniProt 132–276 Fragment:N-TERMINAL DOMAIN Mutation:DELETION MUTANT DEL(152-231) CYCLOPHILIN A × 1 (P62937) X-RAY DIFFRACTION X-ray crystallization conditions:pH 7;THE PROTEIN SOLUTION WAS 0.25 MM CYPA AND 0.25 MM CA(151) IN 10 MM TRISHCL (PH 8.0) AND 1 MM 2-MERCAPTOETHANOL. THE RESERVOIR SOLUTION WAS 1ML OF 1.0 M LICL, 0.1 M BICINE (PH 7.0), AND 22% POLYETHYLENE GLYCOL 8000. THE INITIAL DROP WAS 6 MICROL OF A 1:1 MIX OF PROTEIN AND RESERVOIR SOLUTIONS. Resolution 2.36 Å R-free 0.306

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.

163 other PDB entries and 210 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name POL_HV1N5
Isoform
PDB entities 2
Chains and sequence ranges Author chain C; PDBConstruct 1–145; UniProt 132–276 Author chain D; PDBConstruct 1–145; UniProt 132–276

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 1ak4

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1ak4
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1ak4
Deposition date deposition_date1997-05-28
Structure title titleHUMAN CYCLOPHILIN A BOUND TO THE AMINO-TERMINAL DOMAIN OF HIV-1 CAPSID
Keywords keywordsCAPSID, HIV-1, CYCLOPHILIN A, ISOMERASE, ROTAMASE COMPLEX (CAPSID PROTEIN-CYCLOSPORIN), Viral protein-isomerase COMPLEX; Viral protein/isomerase
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier29.83
Radius of gyration Rg (electron density) rg_electron29.30
Forward intensity I(0) i076503300.00
Molecular weight molecular_weight67994.0 kDa
Excluded volume excluded_volume84886 ų
Envelope volume envelope_volume108450 ų
Hydration-shell volume shell_volume31879 ų
Envelope diameter envelope_diameter92.4
Shell Rg shell_rg35.70
Envelope Rg envelope_rg28.52
Shape Rg shape_rg29.28
Total Rg total_rg30.01
Total atoms total_atoms5836
Residues n_residues618
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 dmax91.6
Rg (real space) rg_real29.71
Rg uncertainty (real space) rg_real_error0.52
I(0) (real space) i0_real7.6500e+07
I(0) uncertainty (real space) i0_real_error1.0980e+06
Rg (reciprocal space) rg_reciprocal29.76
I(0) (reciprocal space) i0_reciprocal76510000.0000
Solution quality estimate total_estimate0.9083
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary43.2
Skewness Skewness skewness0.072
Kurtosis Kurtosis kurtosis-0.718
Angular range angular_range— – 0.2650 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha19870000.0000
Real-space data points n_real_points54
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.953; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 1.000; Smooth: 0.944

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd1ak4a_
Class classb — All beta proteins
Fold Fold foldb.62 — Cyclophilin-like
Superfamily Superfamily superfamilyb.62.1 — Cyclophilin-like
Family Family familyb.62.1.1 — Cyclophilin (peptidylprolyl isomerase)
Domain ID domain_idd1ak4b_
Class classb — All beta proteins
Fold Fold foldb.62 — Cyclophilin-like
Superfamily Superfamily superfamilyb.62.1 — Cyclophilin-like
Family Family familyb.62.1.1 — Cyclophilin (peptidylprolyl isomerase)
Domain ID domain_idd1ak4c_
Class classa — All alpha proteins
Fold Fold folda.73 — Retrovirus capsid protein, N-terminal core domain
Superfamily Superfamily superfamilya.73.1 — Retrovirus capsid protein, N-terminal core domain
Family Family familya.73.1.1 — Retrovirus capsid protein, N-terminal core domain
Domain ID domain_idd1ak4d_
Class classa — All alpha proteins
Fold Fold folda.73 — Retrovirus capsid protein, N-terminal core domain
Superfamily Superfamily superfamilya.73.1 — Retrovirus capsid protein, N-terminal core domain
Family Family familya.73.1.1 — Retrovirus capsid protein, N-terminal core domain

CATH v4.4 (4 domains)

Domain ID domain_id1ak4A00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology100 — Cyclophilin
Homologous superfamily homologous superfamily10 — Cyclophilin-like
Domain ID domain_id1ak4B00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology100 — Cyclophilin
Homologous superfamily homologous superfamily10 — Cyclophilin-like
Domain ID domain_id1ak4C00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology375 — Human Immunodeficiency Virus Type 1 Capsid Protein
Homologous superfamily homologous superfamily10 — Human Immunodeficiency Virus Type 1 Capsid Protein
Domain ID domain_id1ak4D00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology375 — Human Immunodeficiency Virus Type 1 Capsid Protein
Homologous superfamily homologous superfamily10 — Human Immunodeficiency Virus Type 1 Capsid Protein

8. Citations (2)

9. Files and Curves (10)