7xje

Crystal structure of bacteriorhodopsin in the K state refined against the extrapolated dataset

Method: X-RAY DIFFRACTION Dmax: 68.7 Å Quality: GOOD

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

Bacteriorhodopsin

OrganismNot specified

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 homooligomer Homooligomer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain A; UniProt 18–247 Not recorded RET RETINAL × 3 L2P 2,3-DI-PHYTANYL-GLYCEROL × 30 X-RAY DIFFRACTION X-ray crystallization conditions:LIPIDIC CUBIC PHASE;293 K;MO, 2.0-2.5 M PHOSPHATE Resolution 1.33 Å R-free 0.293

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 201 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name BACR_HALSA
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–230; UniProt 18–247

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 7xje

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 7xje
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2. Structure Basics 2. Structure Basics

Entry ID entry_id7xje
Deposition date deposition_date2022-04-16
Structure title titleCrystal structure of bacteriorhodopsin in the K state refined against the extrapolated dataset
Keywords keywordsproton pump, membrane protein, PROTON TRANSPORT; PROTON TRANSPORT
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier19.56
Radius of gyration Rg (electron density) rg_electron18.52
Forward intensity I(0) i08618330.00
Molecular weight molecular_weight28531.0 kDa
Excluded volume excluded_volume38713 ų
Envelope volume envelope_volume42024 ų
Hydration-shell volume shell_volume18915 ų
Envelope diameter envelope_diameter71.3
Shell Rg shell_rg24.94
Envelope Rg envelope_rg19.11
Shape Rg shape_rg18.50
Total Rg total_rg19.84
Total atoms total_atoms2019
Residues n_residues230
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 dmax68.7
Rg (real space) rg_real19.63
Rg uncertainty (real space) rg_real_error0.62
I(0) (real space) i0_real8.6180e+06
I(0) uncertainty (real space) i0_real_error1.1820e+05
Rg (reciprocal space) rg_reciprocal19.62
I(0) (reciprocal space) i0_reciprocal8618000.0000
Solution quality estimate total_estimate0.7671
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks3
Primary peak position r_peak_primary20.3
Skewness Skewness skewness0.437
Kurtosis Kurtosis kurtosis-0.243
Angular range angular_range— – 0.4050 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha2130000.0000
Real-space data points n_real_points72
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.716; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.822; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

Domain ID domain_id7xjeA01
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)