2b5u

Crystal Structure Of Colicin E3 V206C Mutant In Complex With Its Immunity Protein

Method: X-RAY DIFFRACTION Dmax: 182.0 Å Quality: REASONABLE

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

Colicin E3

Escherichia coli

UniProt P00646

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 heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 1–551 Mutation:V206C Colicin E3 immunity protein × 1 (P02984) CIT CITRIC ACID × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;pH 5.6;277 K;Sodium citrate, pH 5.6, VAPOR DIFFUSION, temperature 277K Resolution 2.30 Å R-free 0.295
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain C; UniProt 1–551 Mutation:V206C Colicin E3 immunity protein × 1 (P02984) CIT CITRIC ACID × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;pH 5.6;277 K;Sodium citrate, pH 5.6, VAPOR DIFFUSION, temperature 277K Resolution 2.30 Å R-free 0.295

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.

5 other PDB entries and 8 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CEA3_ECOLI
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–551; UniProt 1–551 Author chain C; PDBConstruct 1–551; UniProt 1–551

Colicin E3 immunity protein

Escherichia coli

UniProt P02984

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 heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain B; UniProt 1–84 Not recorded Colicin E3 × 1 (P00646) CIT CITRIC ACID × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;pH 5.6;277 K;Sodium citrate, pH 5.6, VAPOR DIFFUSION, temperature 277K Resolution 2.30 Å R-free 0.295
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain D; UniProt 1–84 Not recorded Colicin E3 × 1 (P00646) CIT CITRIC ACID × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION;pH 5.6;277 K;Sodium citrate, pH 5.6, VAPOR DIFFUSION, temperature 277K Resolution 2.30 Å R-free 0.295

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.

4 other PDB entries and 6 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name IMM3_ECOLI
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–84; UniProt 1–84 Author chain D; PDBConstruct 1–84; UniProt 1–84

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 2b5u

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 2b5u
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2. Structure Basics 2. Structure Basics

Entry ID entry_id2b5u
Deposition date deposition_date2005-09-29
Structure title titleCrystal Structure Of Colicin E3 V206C Mutant In Complex With Its Immunity Protein
Keywords keywordsHigh resolution crystal structure, Colicin E3, Immunity Protein, Ribosome inactivation, RIBOSOME INHIBITOR, HYDROLASE; RIBOSOME INHIBITOR, HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier60.20
Radius of gyration Rg (electron density) rg_electron61.92
Forward intensity I(0) i0231286000.00
Molecular weight molecular_weight121620.0 kDa
Excluded volume excluded_volume150220 ų
Envelope volume envelope_volume250390 ų
Hydration-shell volume shell_volume37568 ų
Envelope diameter envelope_diameter191.4
Shell Rg shell_rg51.62
Envelope Rg envelope_rg59.76
Shape Rg shape_rg61.99
Total Rg total_rg61.36
Total atoms total_atoms8572
Residues n_residues1108
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 dmax182.0
Rg (real space) rg_real61.25
Rg uncertainty (real space) rg_real_error2.30
I(0) (real space) i0_real2.3130e+08
I(0) uncertainty (real space) i0_real_error4.7270e+06
Rg (reciprocal space) rg_reciprocal59.21
I(0) (reciprocal space) i0_reciprocal230500000.0000
Solution quality estimate total_estimate0.6326
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary35.0
Skewness Skewness skewness0.379
Kurtosis Kurtosis kurtosis-1.098
Angular range angular_range— – 0.1300 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha6076000.0000
Real-space data points n_real_points27
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.342; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.193; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 14 domains

SCOP 2.08 (8 domains)

Domain ID domain_idd2b5ua1
Class classb — All beta proteins
Fold Fold foldb.101 — Ribonuclease domain of colicin E3
Superfamily Superfamily superfamilyb.101.1 — Ribonuclease domain of colicin E3
Family Family familyb.101.1.1 — Ribonuclease domain of colicin E3
Domain ID domain_idd2b5ua2
Class classb — All beta proteins
Fold Fold foldb.110 — Cloacin translocation domain
Superfamily Superfamily superfamilyb.110.1 — Cloacin translocation domain
Family Family familyb.110.1.1 — Cloacin translocation domain
Domain ID domain_idd2b5ua3
Class classh — Coiled coil proteins
Fold Fold foldh.4 — Antiparallel coiled-coil
Superfamily Superfamily superfamilyh.4.9 — Colicin E3 receptor domain
Family Family familyh.4.9.1 — Colicin E3 receptor domain
Domain ID domain_idd2b5ub_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.26 — FKBP-like
Superfamily Superfamily superfamilyd.26.2 — Colicin E3 immunity protein
Family Family familyd.26.2.1 — Colicin E3 immunity protein
Domain ID domain_idd2b5uc1
Class classb — All beta proteins
Fold Fold foldb.101 — Ribonuclease domain of colicin E3
Superfamily Superfamily superfamilyb.101.1 — Ribonuclease domain of colicin E3
Family Family familyb.101.1.1 — Ribonuclease domain of colicin E3
Domain ID domain_idd2b5uc2
Class classb — All beta proteins
Fold Fold foldb.110 — Cloacin translocation domain
Superfamily Superfamily superfamilyb.110.1 — Cloacin translocation domain
Family Family familyb.110.1.1 — Cloacin translocation domain
Domain ID domain_idd2b5uc3
Class classh — Coiled coil proteins
Fold Fold foldh.4 — Antiparallel coiled-coil
Superfamily Superfamily superfamilyh.4.9 — Colicin E3 receptor domain
Family Family familyh.4.9.1 — Colicin E3 receptor domain
Domain ID domain_idd2b5ud_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.26 — FKBP-like
Superfamily Superfamily superfamilyd.26.2 — Colicin E3 immunity protein
Family Family familyd.26.2.1 — Colicin E3 immunity protein

CATH v4.4 (6 domains)

Domain ID domain_id2b5uA02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology287 — Helix Hairpins
Homologous superfamily homologous superfamily620 — Helix Hairpins
Domain ID domain_id2b5uA03
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology380 — Ribonuclease domain of colicin e3 (Residues 456-551)
Homologous superfamily homologous superfamily10 — Colicin E3-like ribonuclease domain
Domain ID domain_id2b5uB00
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology50 — Chitinase A; domain 3
Homologous superfamily homologous superfamily20 — Cloacin immunity protein
Domain ID domain_id2b5uC02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology287 — Helix Hairpins
Homologous superfamily homologous superfamily620 — Helix Hairpins
Domain ID domain_id2b5uC03
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology380 — Ribonuclease domain of colicin e3 (Residues 456-551)
Homologous superfamily homologous superfamily10 — Colicin E3-like ribonuclease domain
Domain ID domain_id2b5uD00
Class class3 — Alpha Beta
Architecture architecture10 — Roll
Topology topology50 — Chitinase A; domain 3
Homologous superfamily homologous superfamily20 — Cloacin immunity protein

8. Citations (1)

9. Files and Curves (10)