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2ftk

berylloflouride Spo0F complex with Spo0B

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

Sporulation initiation phosphotransferase B

Bacillus subtilis

UniProt P06535

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 4 Sporulation initiation phosphotransferase F × 2 （P06628） MAGNESIUM ION × 2 Consistent with protein count
2 Protein heterocomplex Heteromer Protein 4 Sporulation initiation phosphotransferase F × 2 （P06628） MAGNESIUM ION × 2 Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer
1ixm

1 assemblies

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1f51 1f51 2ftk 2ftk

4 assemblies

View Construct and Data Evidence
UniProt name SP0B_BACSU
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–192； UniProt 1–192 Author chain B； PDBConstruct 1–192； UniProt 1–192 Author chain C； PDBConstruct 1–192； UniProt 1–192 Author chain D； PDBConstruct 1–192； UniProt 1–192

Sporulation initiation phosphotransferase F

Bacillus subtilis

UniProt P06628

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 4 Sporulation initiation phosphotransferase B × 2 （P06535） MAGNESIUM ION × 2 Consistent with protein count
2 Protein heterocomplex Heteromer Protein 4 Sporulation initiation phosphotransferase B × 2 （P06535） MAGNESIUM ION × 2 Consistent with protein count

Other States of the Same Protein in the Database

Monomer
1fsp 1nat 1pey 1pey 1pey 1pux 2fsp 2jvi 2jvj 2jvk

10 assemblies

Homodimer
1srr 1srr

2 assemblies

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1f51 1f51 2ftk 2ftk 3q15 3q15

6 assemblies

View Construct and Data Evidence
UniProt name SP0F_BACSU
Isoform —
PDB entities 2
Chains and sequence ranges Author chain E； PDBConstruct 1–124； UniProt 1–124 Author chain F； PDBConstruct 1–124； UniProt 1–124 Author chain G； PDBConstruct 1–124； UniProt 1–124 Author chain H； PDBConstruct 1–124； UniProt 1–124

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_id2ftk
Deposition date deposition_date2006-01-24
Structure title titleberylloflouride Spo0F complex with Spo0B
Keywords keywordsSporulation, Spo0F, Spo0B phosphorelay, TRANSFERASE; TRANSFERASE
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.

2ftk__assembly_1__model_1

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

Download this curve (.dat)

2ftk__assembly_1__model_1 | I(q)

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

2ftk__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）27.66 Å
Rg (electron density)26.56 Å
Total Rg27.33 Å
Atom count4912
Residues599
Excluded volume87982 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 2ftk__assembly_1__model_1 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 2ftk__assembly_2__model_1 tetrameric （4） 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) 20 domains

SCOP 2.08 (8 domains)

Domain ID domain_idd2ftka_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.123 — Sporulation response regulatory protein Spo0B
Superfamily Superfamily superfamilyd.123.1 — Sporulation response regulatory protein Spo0B
Family Family familyd.123.1.1 — Sporulation response regulatory protein Spo0B
Domain ID domain_idd2ftkb_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.123 — Sporulation response regulatory protein Spo0B
Superfamily Superfamily superfamilyd.123.1 — Sporulation response regulatory protein Spo0B
Family Family familyd.123.1.1 — Sporulation response regulatory protein Spo0B
Domain ID domain_idd2ftkc_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.123 — Sporulation response regulatory protein Spo0B
Superfamily Superfamily superfamilyd.123.1 — Sporulation response regulatory protein Spo0B
Family Family familyd.123.1.1 — Sporulation response regulatory protein Spo0B
Domain ID domain_idd2ftkd_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.123 — Sporulation response regulatory protein Spo0B
Superfamily Superfamily superfamilyd.123.1 — Sporulation response regulatory protein Spo0B
Family Family familyd.123.1.1 — Sporulation response regulatory protein Spo0B
Domain ID domain_idd2ftke_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.23 — Flavodoxin-like
Superfamily Superfamily superfamilyc.23.1 — CheY-like
Family Family familyc.23.1.1 — CheY-related
Domain ID domain_idd2ftkf_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.23 — Flavodoxin-like
Superfamily Superfamily superfamilyc.23.1 — CheY-like
Family Family familyc.23.1.1 — CheY-related
Domain ID domain_idd2ftkg_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.23 — Flavodoxin-like
Superfamily Superfamily superfamilyc.23.1 — CheY-like
Family Family familyc.23.1.1 — CheY-related
Domain ID domain_idd2ftkh_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.23 — Flavodoxin-like
Superfamily Superfamily superfamilyc.23.1 — CheY-like
Family Family familyc.23.1.1 — CheY-related

CATH v4.4 (12 domains)

Domain ID domain_id2ftkA01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology287 — Helix Hairpins
Homologous superfamily homologous superfamily130 — Signal transduction histidine kinase, dimerisation/phosphotransfer (DHp) domain
Domain ID domain_id2ftkA02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology565 — Heat Shock Protein 90
Homologous superfamily homologous superfamily30 — Sporulation initiation phosphotransferase B (SpoOB), C-terminal domain
Domain ID domain_id2ftkB01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology287 — Helix Hairpins
Homologous superfamily homologous superfamily130 — Signal transduction histidine kinase, dimerisation/phosphotransfer (DHp) domain
Domain ID domain_id2ftkB02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology565 — Heat Shock Protein 90
Homologous superfamily homologous superfamily30 — Sporulation initiation phosphotransferase B (SpoOB), C-terminal domain
Domain ID domain_id2ftkC01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology287 — Helix Hairpins
Homologous superfamily homologous superfamily130 — Signal transduction histidine kinase, dimerisation/phosphotransfer (DHp) domain
Domain ID domain_id2ftkC02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology565 — Heat Shock Protein 90
Homologous superfamily homologous superfamily30 — Sporulation initiation phosphotransferase B (SpoOB), C-terminal domain
Domain ID domain_id2ftkD01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology287 — Helix Hairpins
Homologous superfamily homologous superfamily130 — Signal transduction histidine kinase, dimerisation/phosphotransfer (DHp) domain
Domain ID domain_id2ftkD02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology565 — Heat Shock Protein 90
Homologous superfamily homologous superfamily30 — Sporulation initiation phosphotransferase B (SpoOB), C-terminal domain
Domain ID domain_id2ftkE00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily2300 — Response regulator
Domain ID domain_id2ftkF00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily2300 — Response regulator
Domain ID domain_id2ftkG00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily2300 — Response regulator
Domain ID domain_id2ftkH00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily2300 — Response regulator
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7. Citations (1)