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3ifm

PF1 FILAMENTOUS BACTERIOPHAGE: REFINEMENT OF A MOLECULAR MODEL BY SIMULATED ANNEALING USING 3.3 ANGSTROMS RESOLUTION X-RAY FIBRE DIFFRACTION DATA

Method: FIBER DIFFRACTION
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1. Protein Identity and Related Structures Protein Identity & Related Structures

PF1 FILAMENTOUS BACTERIOPHAGE

OrganismNot specified

UniProt P03621

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein homooligomer Homooligomer Protein 35 No other associated polymer Consistent with protein count
2 Protein monomer Monomer Protein 1 No other associated polymer Consistent with protein count
3 Protein monomer Monomer Protein 1 No other associated polymer Consistent with protein count

Other States of the Same Protein in the Database

Monomer
1ifm 1ifm 1ifn 1ifn 1pjf 1ql1 1ql1 1zn5 2ifm 2ifm 2ifn 2ifn

20 assemblies; showing the first 12

Homodimer

None

Homotetramer

None

Other homooligomers
1ifm 1ifn 1ql1 1ql2 1ql2 1ql2 2ifm 2ifn 2xkm 3ifm 4ifm

11 assemblies

Heteromeric or nucleic-acid complex
1pfi 1pfi 1pfi

3 assemblies

View Construct and Data Evidence
UniProt name COATB_BPPF1
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–46； UniProt 37–82

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_id3ifm
Deposition date deposition_date1994-01-16
Structure title titlePF1 FILAMENTOUS BACTERIOPHAGE: REFINEMENT OF A MOLECULAR MODEL BY SIMULATED ANNEALING USING 3.3 ANGSTROMS RESOLUTION X-RAY FIBRE DIFFRACTION DATA
Keywords keywordsVIRUS COAT PROTEIN, Helical virus, Virus; VIRUS
Experimental Method methodFIBER 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.

3ifm__assembly_1__model_1

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

Download this curve (.dat)

3ifm__assembly_1__model_1 | I(q)

10-2 10-1 106 107 108 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

3ifm__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）42.37 Å
Rg (electron density)42.37 Å
Total Rg42.52 Å
Atom count11270
Residues1610
Excluded volume206110 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 3ifm__assembly_1__model_1 helical （35） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 3ifm__assembly_2__model_1 monomeric （1） Excluded — —
Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
3 1 3ifm__assembly_3__model_1 monomeric （1） Excluded — —
Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (1)

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd3ifma_
Class classh — Coiled coil proteins
Fold Fold foldh.1 — Parallel coiled-coil
Superfamily Superfamily superfamilyh.1.4 — Inovirus (filamentous phage) major coat protein
Family Family familyh.1.4.1 — Inovirus (filamentous phage) major coat protein

CATH v4.4 (1 domains)

Domain ID domain_id3ifmA00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily230 —
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7. Citations (4)