3i17

Crystal structure of the apo R132K:L121E mutant of cellular retinoic acid-binding protein II at 1.68 angstrom resolution

Method: X-RAY DIFFRACTION Dmax: 70.2 Å Quality: EXCELLENT

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

Cellular retinoic acid-binding protein 2

Homo sapiens

UniProt P29373

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 2–138 Chain B; UniProt 2–138 Mutation:R132K, L121E No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 9.5;298 K;0.1 M Bis-tris-propane, pH 9.5, 30% PEG4000, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 1.68 Å R-free 0.231

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.

84 other PDB entries and 138 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name RABP2_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–137; UniProt 2–138 Author chain B; PDBConstruct 1–137; UniProt 2–138

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 3i17

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3i17
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2. Structure Basics 2. Structure Basics

Entry ID entry_id3i17
Deposition date deposition_date2009-06-25
Structure title titleCrystal structure of the apo R132K:L121E mutant of cellular retinoic acid-binding protein II at 1.68 angstrom resolution
Keywords keywordsCRABPII, retinoic acid, retinoid, Nucleus, Retinol-binding, Transport, Vitamin A, lipid binding, retinal binding; lipid binding, retinal binding
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier22.28
Radius of gyration Rg (electron density) rg_electron21.46
Forward intensity I(0) i016934700.00
Molecular weight molecular_weight31094.0 kDa
Excluded volume excluded_volume39005 ų
Envelope volume envelope_volume48724 ų
Hydration-shell volume shell_volume19573 ų
Envelope diameter envelope_diameter71.4
Shell Rg shell_rg27.10
Envelope Rg envelope_rg21.36
Shape Rg shape_rg21.48
Total Rg total_rg22.19
Total atoms total_atoms2180
Residues n_residues274
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 dmax70.2
Rg (real space) rg_real22.29
Rg uncertainty (real space) rg_real_error0.33
I(0) (real space) i0_real1.6930e+07
I(0) uncertainty (real space) i0_real_error2.0790e+05
Rg (reciprocal space) rg_reciprocal22.29
I(0) (reciprocal space) i0_reciprocal16930000.0000
Solution quality estimate total_estimate0.9029
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary23.4
Skewness Skewness skewness0.322
Kurtosis Kurtosis kurtosis-0.533
Angular range angular_range— – 0.3550 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha4076000.0000
Real-space data points n_real_points67
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.920; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.990; Smooth: 0.983

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd3i17a_
Class classb — All beta proteins
Fold Fold foldb.60 — Lipocalins
Superfamily Superfamily superfamilyb.60.1 — Lipocalins
Family Family familyb.60.1.2 — Fatty acid binding protein-like
Domain ID domain_idd3i17b_
Class classb — All beta proteins
Fold Fold foldb.60 — Lipocalins
Superfamily Superfamily superfamilyb.60.1 — Lipocalins
Family Family familyb.60.1.2 — Fatty acid binding protein-like

CATH v4.4 (2 domains)

Domain ID domain_id3i17A00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily20 — Calycin beta-barrel core domain
Domain ID domain_id3i17B00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily20 — Calycin beta-barrel core domain

8. Citations (1)

9. Files and Curves (10)