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1ifd

MODEL-BUILDING STUDIES OF INOVIRUS: GENETIC VARIATIONS ON A GEOMETRIC THEME

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

INOVIRUS

Enterobacteria phage fd

UniProt P69539

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein homooligomer Homooligomer Protein 55 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
1fdm 1ifd 1ifd 1ifi 1ifi 1ifj 1ifj 1mzt 2c0w 2c0w 2hi5 2hi5

12 assemblies

Homodimer

None

Homotetramer

None

Other homooligomers
1ifd 1ifi 1ifj 2c0w 2c0x 2hi5 8ch5

7 assemblies

Heteromeric or nucleic-acid complex

None

View Construct and Data Evidence
UniProt name COATB_BPFD
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–50； UniProt 24–73

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_id1ifd
Deposition date deposition_date1992-02-16
Structure title titleMODEL-BUILDING STUDIES OF INOVIRUS: GENETIC VARIATIONS ON A GEOMETRIC THEME
Keywords keywordsVIRUS, Helical 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.

1ifd__assembly_1__model_1

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

Download this curve (.dat)

1ifd__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.

1ifd__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）57.50 Å
Rg (electron density)58.45 Å
Total Rg58.09 Å
Atom count20350
Residues2750
Excluded volume369090 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1ifd__assembly_1__model_1 helical （55） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 1ifd__assembly_2__model_1 monomeric （1） Excluded — —
Exclusion reason： Auxiliary symmetry representation; not a complete or representative biological assembly.
3 1 1ifd__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_idd1ifda_
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_id1ifdA00
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 superfamily80 —
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7. Citations (6)