3kx4

Crystal structure of Bacillus megaterium BM3 heme domain mutant I401E

Method: X-RAY DIFFRACTION Dmax: 104.3 Å Quality: GOOD

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

Bifunctional P-450/NADPH-P450 reductase

Bacillus megaterium

UniProt P14779

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 2–471 Fragment:Heme domain (UNP residues 2-471) Mutation:I401E HEM PROTOPORPHYRIN IX CONTAINING FE × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7.4;277 K;100mM cacodylic acid, pH 6.0, containing 18% PEG 3350, 140mM MgCl2, VAPOR DIFFUSION, SITTING DROP, temperature 277K Resolution 1.95 Å R-free 0.210
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 2–471 Fragment:Heme domain (UNP residues 2-471) Mutation:I401E HEM PROTOPORPHYRIN IX CONTAINING FE × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7.4;277 K;100mM cacodylic acid, pH 6.0, containing 18% PEG 3350, 140mM MgCl2, VAPOR DIFFUSION, SITTING DROP, temperature 277K Resolution 1.95 Å R-free 0.210

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.

168 other PDB entries and 310 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CPXB_BACME
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–470; UniProt 2–471 Author chain B; PDBConstruct 1–470; UniProt 2–471

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 3kx4

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3kx4
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2. Structure Basics 2. Structure Basics

Entry ID entry_id3kx4
Deposition date deposition_date2009-12-02
Structure title titleCrystal structure of Bacillus megaterium BM3 heme domain mutant I401E
Keywords keywords;cytochrome P450, I401E mutant, Heme domain, Cytoplasm, Electron transport, FAD, Flavoprotein, FMN, Heme, Iron, Metal-binding, Monooxygenase, Multifunctional enzyme, NADP, Oxidoreductase, Transport ;; OXIDOREDUCTASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier32.64
Radius of gyration Rg (electron density) rg_electron31.76
Forward intensity I(0) i0166332000.00
Molecular weight molecular_weight104820.0 kDa
Excluded volume excluded_volume131840 ų
Envelope volume envelope_volume161520 ų
Hydration-shell volume shell_volume42104 ų
Envelope diameter envelope_diameter109.8
Shell Rg shell_rg39.04
Envelope Rg envelope_rg31.60
Shape Rg shape_rg31.77
Total Rg total_rg32.32
Total atoms total_atoms7388
Residues n_residues907
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 dmax104.3
Rg (real space) rg_real32.62
Rg uncertainty (real space) rg_real_error0.65
I(0) (real space) i0_real1.6630e+08
I(0) uncertainty (real space) i0_real_error2.4950e+06
Rg (reciprocal space) rg_reciprocal32.63
I(0) (reciprocal space) i0_reciprocal166300000.0000
Solution quality estimate total_estimate0.8941
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary36.2
Skewness Skewness skewness0.319
Kurtosis Kurtosis kurtosis-0.487
Angular range angular_range— – 0.2450 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha41330000.0000
Real-space data points n_real_points50
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.913; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.998; Smooth: 0.883

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_idd3kx4a_
Class classa — All alpha proteins
Fold Fold folda.104 — Cytochrome P450
Superfamily Superfamily superfamilya.104.1 — Cytochrome P450
Family Family familya.104.1.1 — Cytochrome P450
Domain ID domain_idd3kx4b_
Class classa — All alpha proteins
Fold Fold folda.104 — Cytochrome P450
Superfamily Superfamily superfamilya.104.1 — Cytochrome P450
Family Family familya.104.1.1 — Cytochrome P450

CATH v4.4 (2 domains)

Domain ID domain_id3kx4A00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology630 — Cytochrome p450
Homologous superfamily homologous superfamily10 — Cytochrome P450
Domain ID domain_id3kx4B00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology630 — Cytochrome p450
Homologous superfamily homologous superfamily10 — Cytochrome P450

8. Citations (1)

9. Files and Curves (10)