1q5i

Crystal structure of bacteriorhodopsin mutant P186A crystallized from bicelles

Method: X-RAY DIFFRACTION Dmax: 79.0 Å Quality: EXCELLENT

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

Bacteriorhodopsin

Halobacterium salinarum

UniProt P02945

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 monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 14–262 Mutation:P186A RET RETINAL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 4;310 K;DMPC, CHAPSO, sodium phosphate, hexanediol, pH 4.0, VAPOR DIFFUSION, HANGING DROP, temperature 310.0K Resolution 2.30 Å R-free 0.256
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 14–262 Mutation:P186A RET RETINAL × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 4;310 K;DMPC, CHAPSO, sodium phosphate, hexanediol, pH 4.0, VAPOR DIFFUSION, HANGING DROP, temperature 310.0K Resolution 2.30 Å R-free 0.256

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.

173 other PDB entries and 200 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name BACR_HALN1
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–249; UniProt 14–262 Author chain B; PDBConstruct 1–249; UniProt 14–262

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 1q5i

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1q5i
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1q5i
Deposition date deposition_date2003-08-07
Structure title titleCrystal structure of bacteriorhodopsin mutant P186A crystallized from bicelles
Keywords keywordsalpha helix, membrane protein; MEMBRANE PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier24.99
Radius of gyration Rg (electron density) rg_electron23.88
Forward intensity I(0) i031417500.00
Molecular weight molecular_weight50146.0 kDa
Excluded volume excluded_volume65623 ų
Envelope volume envelope_volume73984 ų
Hydration-shell volume shell_volume25783 ų
Envelope diameter envelope_diameter81.4
Shell Rg shell_rg31.02
Envelope Rg envelope_rg23.92
Shape Rg shape_rg23.89
Total Rg total_rg24.79
Total atoms total_atoms3548
Residues n_residues454
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 dmax79.0
Rg (real space) rg_real24.91
Rg uncertainty (real space) rg_real_error0.53
I(0) (real space) i0_real3.1420e+07
I(0) uncertainty (real space) i0_real_error4.0760e+05
Rg (reciprocal space) rg_reciprocal24.94
I(0) (reciprocal space) i0_reciprocal31420000.0000
Solution quality estimate total_estimate0.9094
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary28.8
Skewness Skewness skewness0.168
Kurtosis Kurtosis kurtosis-0.594
Angular range angular_range— – 0.3200 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha5222000.0000
Real-space data points n_real_points64
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.946; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.990; Smooth: 0.989

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1q5ia_
Class classf — Membrane and cell surface proteins and peptides
Fold Fold foldf.13 — Class A G protein-coupled receptor (GPCR)-like
Superfamily Superfamily superfamilyf.13.1 — Class A G protein-coupled receptor (GPCR)-like
Family Family familyf.13.1.1 — Bacteriorhodopsin-like
Domain ID domain_idd1q5ib_
Class classf — Membrane and cell surface proteins and peptides
Fold Fold foldf.13 — Class A G protein-coupled receptor (GPCR)-like
Superfamily Superfamily superfamilyf.13.1 — Class A G protein-coupled receptor (GPCR)-like
Family Family familyf.13.1.1 — Bacteriorhodopsin-like

CATH v4.4 (2 domains)

Domain ID domain_id1q5iA00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology1070 — Rhopdopsin 7-helix transmembrane proteins
Homologous superfamily homologous superfamily10 — Rhodopsin 7-helix transmembrane proteins
Domain ID domain_id1q5iB00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology1070 — Rhopdopsin 7-helix transmembrane proteins
Homologous superfamily homologous superfamily10 — Rhodopsin 7-helix transmembrane proteins

8. Citations (1)

9. Files and Curves (10)