← Back to search
1sv1

NMR structure of the ThKaiA180C-CIIABD complex (25-structure ensemble)

Method: SOLUTION NMR
▼

1. Protein Identity and Related Structures Protein Identity & Related Structures

Circadian clock protein KaiA

Thermosynechococcus elongatus

UniProt Q79V62

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 4 Circadian clock protein KaiC × 2 （Q8RR33） Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1suy 1sv1 5jwr 5jwr

4 assemblies

View Construct and Data Evidence
UniProt name KAIA_SYNEL
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 4–107； UniProt 180–283 Author chain B； PDBConstruct 4–107； UniProt 180–283

Circadian clock protein KaiC

Thermosynechococcus elongatus

UniProt Q8RR33

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 4 Circadian clock protein KaiA × 2 （Q79V62） Consistent with protein count

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1suy 1sv1

2 assemblies

View Construct and Data Evidence
UniProt name Q8RR33
Isoform —
PDB entities 2
Chains and sequence ranges Author chain C； PDBConstruct 4–34； UniProt 488–518 Author chain D； PDBConstruct 4–34； UniProt 488–518

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id1sv1
Deposition date deposition_date2004-03-26
Structure title titleNMR structure of the ThKaiA180C-CIIABD complex (25-structure ensemble)
Keywords keywordsX-class Four Helix Bundle, Protein-peptide complex, Circadian Clock Protein; CIRCADIAN CLOCK PROTEIN
Experimental Method methodSOLUTION NMR
▼

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.

1sv1__assembly_1__model_12

Assembly 1 · Model 12 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1sv1__assembly_1__model_12 | I(q)

10-2 10-1 105 106 107 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1sv1__assembly_1__model_12 | 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）20.66 Å
Rg (electron density)19.23 Å
Total Rg20.34 Å
Atom count4596
Residues282
Excluded volume40711 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1sv1__assembly_1__model_1 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 2 1sv1__assembly_1__model_2 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 3 1sv1__assembly_1__model_3 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 4 1sv1__assembly_1__model_4 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 5 1sv1__assembly_1__model_5 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 6 1sv1__assembly_1__model_6 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 7 1sv1__assembly_1__model_7 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 8 1sv1__assembly_1__model_8 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 9 1sv1__assembly_1__model_9 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 10 1sv1__assembly_1__model_10 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 11 1sv1__assembly_1__model_11 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 12 1sv1__assembly_1__model_12 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 13 1sv1__assembly_1__model_13 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 14 1sv1__assembly_1__model_14 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 15 1sv1__assembly_1__model_15 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 16 1sv1__assembly_1__model_16 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 17 1sv1__assembly_1__model_17 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 18 1sv1__assembly_1__model_18 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 19 1sv1__assembly_1__model_19 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 20 1sv1__assembly_1__model_20 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 21 1sv1__assembly_1__model_21 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 22 1sv1__assembly_1__model_22 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 23 1sv1__assembly_1__model_23 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 24 1sv1__assembly_1__model_24 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
1 25 1sv1__assembly_1__model_25 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (2)

▼

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd1sv1a1
Class classa — All alpha proteins
Fold Fold folda.186 — KaiA/RbsU domain
Superfamily Superfamily superfamilya.186.1 — KaiA/RbsU domain
Family Family familya.186.1.1 — Circadian clock protein KaiA, C-terminal domain
Domain ID domain_idd1sv1a2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags
Domain ID domain_idd1sv1b1
Class classa — All alpha proteins
Fold Fold folda.186 — KaiA/RbsU domain
Superfamily Superfamily superfamilya.186.1 — KaiA/RbsU domain
Family Family familya.186.1.1 — Circadian clock protein KaiA, C-terminal domain
Domain ID domain_idd1sv1b2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags

CATH v4.4 (2 domains)

Domain ID domain_id1sv1A00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology1240 — Methyltransferase, Methionine Synthase (B12-binding Domains); Chain A, domain 1
Homologous superfamily homologous superfamily30 — KaiA/RbsU domain
Domain ID domain_id1sv1B00
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology1240 — Methyltransferase, Methionine Synthase (B12-binding Domains); Chain A, domain 1
Homologous superfamily homologous superfamily30 — KaiA/RbsU domain
▶

7. Citations (1)