2fhz

Molecular Basis of Inhibition of the Ribonuclease Activity in Colicin E5 by Its Cognate Immunity Protein

Method: X-RAY DIFFRACTION
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1. Protein Identity and Related Structures Protein Identity & Related Structures

Colicin-E5 immunity protein

Escherichia coli

UniProt P13476

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 2 Colicin-E5 × 1 (P18000) water × 2 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name IMM5_ECOLI
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 27–109; UniProt 1–83

Colicin-E5

Escherichia coli

UniProt P18000

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 2 Colicin-E5 immunity protein × 1 (P13476) water × 2 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name CEA5_ECOLI
Isoform —
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 2–108; UniProt 74–180

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.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id2fhz
Deposition date deposition_date2005-12-27
Structure title titleMolecular Basis of Inhibition of the Ribonuclease Activity in Colicin E5 by Its Cognate Immunity Protein
Keywords keywordsProtein-Protein Complex, Inhibition of Ribonuclease, IMMUNE SYSTEM, HYDROLASE; IMMUNE SYSTEM, HYDROLASE
Experimental Method methodX-RAY DIFFRACTION
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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

2fhz__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

2fhz__assembly_1__model_1 | I(q)

10-2 10-1 105 106 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

2fhz__assembly_1__model_1 | P(r) · Pending

The new assembly/model P(r) has not been calculated yet This placeholder does not display legacy data r (Angstrom) P(r)
P(r) will be calculated and displayed separately for the same assembly/model.
Rg(Guinier)16.81 Å
Rg (electron density)15.78 Å
Total Rg16.85 Å
Atom count1571
Residues199
Excluded volume27754 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 2fhz__assembly_1__model_1 dimeric (2) Success 4.1.3-1-20251215 (887e7ef) View Download
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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (3)

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6. Fold Classification (SCOP + CATH) 5 domains

SCOP 2.08 (3 domains)

Domain ID domain_idd2fhza1
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.311 — ImmE5-like
Superfamily Superfamily superfamilyd.311.1 — ImmE5-like
Family Family familyd.311.1.1 — ImmE5-like
Domain ID domain_idd2fhza2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd2fhzb_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.243 — Colicin D/E5 nuclease domain
Superfamily Superfamily superfamilyd.243.1 — Colicin D/E5 nuclease domain
Family Family familyd.243.1.2 — Colicin E5 nuclease domain

CATH v4.4 (2 domains)

Domain ID domain_id2fhzA00
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology190 — Ribulose 1,5 Bisphosphate Carboxylase/Oxygenase
Homologous superfamily homologous superfamily30 —
Domain ID domain_id2fhzB00
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology2310 — YaeB-like fold
Homologous superfamily homologous superfamily30 — Colicin E5 C-terminal ribonuclease domain (CRD)
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7. Citations (1)