4md1

Orange species of bacteriorhodopsin from Halobacterium salinarum

Method: X-RAY DIFFRACTION Dmax: 72.9 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 14–261 Not recorded L2P 2,3-DI-PHYTANYL-GLYCEROL × 54 SQL (6E,10E,14E,18E)-2,6,10,15,19,23-hexamethyltetracosa-2,6,10,14,18,22-hexaene × 3 RET RETINAL × 3 X-RAY DIFFRACTION X-ray crystallization conditions:in meso;pH 5.6;295 K;Crystals were obtained in a lipidic cubic phase of monoolein, pH 5.6, in meso, temperature 295K Resolution 1.73 Å R-free 0.190

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 1–248; UniProt 14–261

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 4md1

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4md1
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4md1
Deposition date deposition_date2013-08-22
Structure title titleOrange species of bacteriorhodopsin from Halobacterium salinarum
Keywords keywordsseven transmembrane helix/Bacterial rhodopsins, proton pumping, membrane, TRANSPORT PROTEIN, MEMBRANE PROTEIN; TRANSPORT PROTEIN, MEMBRANE PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier19.25
Radius of gyration Rg (electron density) rg_electron18.05
Forward intensity I(0) i07896510.00
Molecular weight molecular_weight27158.0 kDa
Excluded volume excluded_volume36796 ų
Envelope volume envelope_volume39876 ų
Hydration-shell volume shell_volume18431 ų
Envelope diameter envelope_diameter71.0
Shell Rg shell_rg24.51
Envelope Rg envelope_rg18.59
Shape Rg shape_rg18.05
Total Rg total_rg19.33
Total atoms total_atoms1926
Residues n_residues224
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 dmax72.9
Rg (real space) rg_real19.31
Rg uncertainty (real space) rg_real_error0.67
I(0) (real space) i0_real7.8970e+06
I(0) uncertainty (real space) i0_real_error1.0200e+05
Rg (reciprocal space) rg_reciprocal19.30
I(0) (reciprocal space) i0_reciprocal7896000.0000
Solution quality estimate total_estimate0.8024
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary20.2
Skewness Skewness skewness0.449
Kurtosis Kurtosis kurtosis-0.159
Angular range angular_range— – 0.4150 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha1931000.0000
Real-space data points n_real_points73
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.578; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.695; Smooth: 0.997

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd4md1a_
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 (1 domains)

Domain ID domain_id4md1A00
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)