2bc5

Crystal structure of E. coli cytochrome b562 with engineered c-type heme linkages

Method: X-RAY DIFFRACTION Dmax: 67.4 Å Quality: EXCELLENT

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

Soluble cytochrome b562

Escherichia coli

UniProt P0ABE7

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 23–128 Mutation:K59W, R98C, Y101C SO4 SULFATE ION × 1 HEC HEME C × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 5;298 K;70% ammonium sulfate, pH 5, VAPOR DIFFUSION, SITTING DROP, temperature 298K Resolution 2.25 Å R-free 0.277
10 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain B; UniProt 23–128 Chain D; UniProt 23–128 Mutation:K59W, R98C, Y101C SO4 SULFATE ION × 4 HEC HEME C × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 5;298 K;70% ammonium sulfate, pH 5, VAPOR DIFFUSION, SITTING DROP, temperature 298K Resolution 2.25 Å R-free 0.277
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 23–128 Mutation:K59W, R98C, Y101C SO4 SULFATE ION × 3 HEC HEME C × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 5;298 K;70% ammonium sulfate, pH 5, VAPOR DIFFUSION, SITTING DROP, temperature 298K Resolution 2.25 Å R-free 0.277
3 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain C; UniProt 23–128 Mutation:K59W, R98C, Y101C SO4 SULFATE ION × 4 HEC HEME C × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 5;298 K;70% ammonium sulfate, pH 5, VAPOR DIFFUSION, SITTING DROP, temperature 298K Resolution 2.25 Å R-free 0.277
4 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain D; UniProt 23–128 Mutation:K59W, R98C, Y101C SO4 SULFATE ION × 1 HEC HEME C × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 5;298 K;70% ammonium sulfate, pH 5, VAPOR DIFFUSION, SITTING DROP, temperature 298K Resolution 2.25 Å R-free 0.277
5 Protein homooligomer Homooligomer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain A; UniProt 23–128 Chain B; UniProt 23–128 Chain C; UniProt 23–128 Chain D; UniProt 23–128 Mutation:K59W, R98C, Y101C SO4 SULFATE ION × 9 HEC HEME C × 4 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 5;298 K;70% ammonium sulfate, pH 5, VAPOR DIFFUSION, SITTING DROP, temperature 298K Resolution 2.25 Å R-free 0.277
6 Protein homooligomer Homooligomer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain A; UniProt 23–128 Chain B; UniProt 23–128 Chain C; UniProt 23–128 Chain D; UniProt 23–128 Mutation:K59W, R98C, Y101C SO4 SULFATE ION × 9 HEC HEME C × 4 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 5;298 K;70% ammonium sulfate, pH 5, VAPOR DIFFUSION, SITTING DROP, temperature 298K Resolution 2.25 Å R-free 0.277
7 Protein homooligomer Homooligomer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain A; UniProt 23–128 Chain B; UniProt 23–128 Chain C; UniProt 23–128 Chain D; UniProt 23–128 Mutation:K59W, R98C, Y101C SO4 SULFATE ION × 9 HEC HEME C × 4 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 5;298 K;70% ammonium sulfate, pH 5, VAPOR DIFFUSION, SITTING DROP, temperature 298K Resolution 2.25 Å R-free 0.277
8 Protein homooligomer Homooligomer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain A; UniProt 23–128 Chain B; UniProt 23–128 Chain C; UniProt 23–128 Chain D; UniProt 23–128 Mutation:K59W, R98C, Y101C SO4 SULFATE ION × 9 HEC HEME C × 4 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 5;298 K;70% ammonium sulfate, pH 5, VAPOR DIFFUSION, SITTING DROP, temperature 298K Resolution 2.25 Å R-free 0.277
9 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 23–128 Chain C; UniProt 23–128 Mutation:K59W, R98C, Y101C SO4 SULFATE ION × 5 HEC HEME C × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 5;298 K;70% ammonium sulfate, pH 5, VAPOR DIFFUSION, SITTING DROP, temperature 298K Resolution 2.25 Å R-free 0.277

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.

714 other PDB entries and 813 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name C562_ECOLI
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–106; UniProt 23–128 Author chain B; PDBConstruct 1–106; UniProt 23–128 Author chain C; PDBConstruct 1–106; UniProt 23–128 Author chain D; PDBConstruct 1–106; UniProt 23–128

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 2bc5

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 2bc5
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2. Structure Basics 2. Structure Basics

Entry ID entry_id2bc5
Deposition date deposition_date2005-10-18
Structure title titleCrystal structure of E. coli cytochrome b562 with engineered c-type heme linkages
Keywords keywordsFour-Helix Bundle, K59W, R98C and Y101C mutations, ELECTRON TRANSPORT; ELECTRON TRANSPORT
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier22.87
Radius of gyration Rg (electron density) rg_electron21.67
Forward intensity I(0) i046773800.00
Molecular weight molecular_weight50219.0 kDa
Excluded volume excluded_volume61590 ų
Envelope volume envelope_volume72933 ų
Hydration-shell volume shell_volume27254 ų
Envelope diameter envelope_diameter68.8
Shell Rg shell_rg29.18
Envelope Rg envelope_rg21.59
Shape Rg shape_rg21.65
Total Rg total_rg22.54
Total atoms total_atoms3497
Residues n_residues424
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 dmax67.4
Rg (real space) rg_real22.68
Rg uncertainty (real space) rg_real_error0.27
I(0) (real space) i0_real4.6770e+07
I(0) uncertainty (real space) i0_real_error5.2480e+05
Rg (reciprocal space) rg_reciprocal22.72
I(0) (reciprocal space) i0_reciprocal46780000.0000
Solution quality estimate total_estimate0.9038
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary32.1
Skewness Skewness skewness0.016
Kurtosis Kurtosis kurtosis-0.501
Angular range angular_range— – 0.3450 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha12510000.0000
Real-space data points n_real_points66
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.931; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.971; Smooth: 0.982

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd2bc5a_
Class classa — All alpha proteins
Fold Fold folda.24 — Four-helical up-and-down bundle
Superfamily Superfamily superfamilya.24.3 — Cytochromes
Family Family familya.24.3.1 — Cytochrome b562
Domain ID domain_idd2bc5b_
Class classa — All alpha proteins
Fold Fold folda.24 — Four-helical up-and-down bundle
Superfamily Superfamily superfamilya.24.3 — Cytochromes
Family Family familya.24.3.1 — Cytochrome b562
Domain ID domain_idd2bc5c_
Class classa — All alpha proteins
Fold Fold folda.24 — Four-helical up-and-down bundle
Superfamily Superfamily superfamilya.24.3 — Cytochromes
Family Family familya.24.3.1 — Cytochrome b562
Domain ID domain_idd2bc5d_
Class classa — All alpha proteins
Fold Fold folda.24 — Four-helical up-and-down bundle
Superfamily Superfamily superfamilya.24.3 — Cytochromes
Family Family familya.24.3.1 — Cytochrome b562

CATH v4.4 (4 domains)

Domain ID domain_id2bc5A00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology120 — Four Helix Bundle (Hemerythrin (Met), subunit A)
Homologous superfamily homologous superfamily10 — Cytochrome c/b562
Domain ID domain_id2bc5B00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology120 — Four Helix Bundle (Hemerythrin (Met), subunit A)
Homologous superfamily homologous superfamily10 — Cytochrome c/b562
Domain ID domain_id2bc5C00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology120 — Four Helix Bundle (Hemerythrin (Met), subunit A)
Homologous superfamily homologous superfamily10 — Cytochrome c/b562
Domain ID domain_id2bc5D00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology120 — Four Helix Bundle (Hemerythrin (Met), subunit A)
Homologous superfamily homologous superfamily10 — Cytochrome c/b562

8. Citations (1)

9. Files and Curves (10)