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2x9b

The filamentous phages fd and IF1 use different infection mechanisms

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

ATTACHMENT PROTEIN G3P

ENTEROBACTERIA PHAGE IF1

UniProt O80297

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein monomer Monomer Protein 1 water × 1 Consistent with protein count
2 Protein monomer Monomer Protein 1 water × 1 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
2x9b 2x9b

2 assemblies

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
2x9a 2x9a

2 assemblies

View Construct and Data Evidence
UniProt name G3P_BPIF1
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–65； UniProt 17–81 Author chain B； PDBConstruct 1–65； UniProt 17–81

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_id2x9b
Deposition date deposition_date2010-03-15
Structure title titleThe filamentous phages fd and IF1 use different infection mechanisms
Keywords keywordsVIRION, VIRAL PROTEIN, PHAGE RECOGNITION, HOST PHAGE COAT PROTEIN HOST-VIRUS INTERACTION; VIRAL PROTEIN
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.

2x9b__assembly_2__model_1

Assembly 2 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

2x9b__assembly_2__model_1 | I(q)

10-2 10-1 104 105 106 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

2x9b__assembly_2__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）12.27 Å
Rg (electron density)11.06 Å
Total Rg12.47 Å
Atom count473
Residues61
Excluded volume8169 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 2x9b__assembly_1__model_1 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 2x9b__assembly_2__model_1 monomeric （1） 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 (2)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd2x9ba_
Class classb — All beta proteins
Fold Fold foldb.37 — N-terminal domains of the minor coat protein g3p
Superfamily Superfamily superfamilyb.37.1 — N-terminal domains of the minor coat protein g3p
Family Family familyb.37.1.0 — automated matches
Domain ID domain_idd2x9bb_
Class classb — All beta proteins
Fold Fold foldb.37 — N-terminal domains of the minor coat protein g3p
Superfamily Superfamily superfamilyb.37.1 — N-terminal domains of the minor coat protein g3p
Family Family familyb.37.1.0 — automated matches

CATH v4.4 (2 domains)

Domain ID domain_id2x9bA00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology27 — Phage FD Coat Protein, Membrane penetration domain
Homologous superfamily homologous superfamily10 — Phage FD Coat Protein,Membrane penetration domain
Domain ID domain_id2x9bB00
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology27 — Phage FD Coat Protein, Membrane penetration domain
Homologous superfamily homologous superfamily10 — Phage FD Coat Protein,Membrane penetration domain
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7. Citations (1)