1cwq

M INTERMEDIATE STRUCTURE OF THE WILD TYPE BACTERIORHODOPSIN IN COMBINATION WITH THE GROUND STATE STRUCTURE

Method: X-RAY DIFFRACTION Dmax: 65.6 Å Quality: GOOD

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

;BACTERIORHODOPSIN ("M" STATE INTERMEDIATE IN COMBINATION WITH GROUND STATE) ;

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 homooligomer Homooligomer Protein × 6 PDB declaration: hexameric(6) Consistent with protein copy count Chain A; UniProt 2–247 Chain B; UniProt 2–247 Not recorded RET RETINAL × 6 UND UNDECANE × 24 OCT N-OCTANE × 48 HEX HEXANE × 36 TRD TRIDECANE × 18 X-RAY DIFFRACTION X-ray crystallization conditions:pH 5.6;CUBIC LIPID PHASE 2.5M PHOSPHATE, pH 5.60 Resolution 2.25 Å R-free 0.236

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_HALHA
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 3–248; UniProt 2–247 Author chain B; PDBConstruct 3–248; UniProt 2–247

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 1cwq

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id1cwq
Deposition date deposition_date1999-08-26
Structure title titleM INTERMEDIATE STRUCTURE OF THE WILD TYPE BACTERIORHODOPSIN IN COMBINATION WITH THE GROUND STATE STRUCTURE
Keywords keywordsPHOTO CYCLE INTERMEDIATE, 7-HELICAL MEMBRANE PROTEIN, PROTON TRANSPORT, RETINAL PROTEIN, ION TRANSPORT; ION TRANSPORT
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier19.85
Radius of gyration Rg (electron density) rg_electron18.79
Forward intensity I(0) i08986390.00
Molecular weight molecular_weight27788.0 kDa
Excluded volume excluded_volume37273 ų
Envelope volume envelope_volume41839 ų
Hydration-shell volume shell_volume18732 ų
Envelope diameter envelope_diameter66.5
Shell Rg shell_rg24.90
Envelope Rg envelope_rg19.27
Shape Rg shape_rg18.77
Total Rg total_rg19.99
Total atoms total_atoms1965
Residues n_residues238
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 dmax65.6
Rg (real space) rg_real19.93
Rg uncertainty (real space) rg_real_error0.50
I(0) (real space) i0_real8.9860e+06
I(0) uncertainty (real space) i0_real_error1.1460e+05
Rg (reciprocal space) rg_reciprocal19.92
I(0) (reciprocal space) i0_reciprocal8986000.0000
Solution quality estimate total_estimate0.7987
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary20.3
Skewness Skewness skewness0.429
Kurtosis Kurtosis kurtosis-0.323
Angular range angular_range— – 0.4000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha1977000.0000
Real-space data points n_real_points72
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.827; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.901; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (7)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd1cwqa_
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_idd1cwqb_
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_id1cwqA00
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_id1cwqB00
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)