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1fr0

SOLUTION STRUCTURE OF THE HISTIDINE-CONTAINING PHOSPHOTRANSFER DOMAIN OF ANAEROBIC SENSOR KINASE ARCB FROM ESCHERICHIA COLI.

Method: SOLUTION NMR
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1. Protein Identity and Related Structures Protein Identity & Related Structures

ARCB

Escherichia coli

UniProt P22763

State in the Current Structure

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

Other States of the Same Protein in the Database

Monomer
1a0b 1fr0 2a0b

3 assemblies

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1bdj

1 assemblies

View Construct and Data Evidence
UniProt name ARCB_ECOLI
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–125； UniProt 654–778

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_id1fr0
Deposition date deposition_date2000-09-07
Structure title titleSOLUTION STRUCTURE OF THE HISTIDINE-CONTAINING PHOSPHOTRANSFER DOMAIN OF ANAEROBIC SENSOR KINASE ARCB FROM ESCHERICHIA COLI.
Keywords keywordsfour-helix bundle motif, anaerobic sensor kinase, TRANSFERASE; TRANSFERASE
Experimental Method methodSOLUTION NMR
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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.

1fr0__assembly_1__model_11

Assembly 1 · Model 11 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1fr0__assembly_1__model_11 | I(q)

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

1fr0__assembly_1__model_11 | 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）16.45 Å
Rg (electron density)15.60 Å
Total Rg16.68 Å
Atom count1966
Residues125
Excluded volume17575 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1fr0__assembly_1__model_1 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 2 1fr0__assembly_1__model_2 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 3 1fr0__assembly_1__model_3 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 4 1fr0__assembly_1__model_4 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 5 1fr0__assembly_1__model_5 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 6 1fr0__assembly_1__model_6 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 7 1fr0__assembly_1__model_7 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 8 1fr0__assembly_1__model_8 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 9 1fr0__assembly_1__model_9 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 10 1fr0__assembly_1__model_10 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 11 1fr0__assembly_1__model_11 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 12 1fr0__assembly_1__model_12 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 13 1fr0__assembly_1__model_13 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 14 1fr0__assembly_1__model_14 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 15 1fr0__assembly_1__model_15 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 16 1fr0__assembly_1__model_16 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 17 1fr0__assembly_1__model_17 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 18 1fr0__assembly_1__model_18 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 19 1fr0__assembly_1__model_19 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 20 1fr0__assembly_1__model_20 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 21 1fr0__assembly_1__model_21 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 22 1fr0__assembly_1__model_22 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 23 1fr0__assembly_1__model_23 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 24 1fr0__assembly_1__model_24 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 25 1fr0__assembly_1__model_25 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 26 1fr0__assembly_1__model_26 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 27 1fr0__assembly_1__model_27 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 28 1fr0__assembly_1__model_28 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 29 1fr0__assembly_1__model_29 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 30 1fr0__assembly_1__model_30 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 (1)

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6. Fold Classification (SCOP + CATH) 2 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd1fr0a_
Class classa — All alpha proteins
Fold Fold folda.24 — Four-helical up-and-down bundle
Superfamily Superfamily superfamilya.24.10 — Histidine-containing phosphotransfer domain, HPT domain
Family Family familya.24.10.1 — Aerobic respiration control sensor protein, ArcB

CATH v4.4 (1 domains)

Domain ID domain_id1fr0A00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology120 — Four Helix Bundle (Hemerythrin (Met), subunit A)
Homologous superfamily homologous superfamily160 — HPT domain
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7. Citations (1)