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2i0q

Crystal structure of a telomere single-strand DNA-protein complex from O. nova with full-length alpha and beta telomere proteins

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

Telomere-binding protein alpha subunit

Sterkiella nova

UniProt P29549

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 2 DNA 1 5'-D(*GP*GP*GP*TP*TP*TP*TP*GP*GP*GP*G)-3' × 1 Telomere-binding protein beta subunit × 1 （P16458） CHLORIDE ION × 4 1,2-ETHANEDIOL × 5 water × 3 Consistent with all polymers

Other States of the Same Protein in the Database

Monomer
1k8g

1 assemblies

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1jb7 1k8g 1k8g 1kix 1otc 1pa6 1ph1 1ph2 1ph3 1ph4 1ph5 1ph6

17 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name TEBA_OXYNO
Isoform —
PDB entities 2
Chains and sequence ranges Author chain A； PDBConstruct 1–495； UniProt 1–495

Telomere-binding protein beta subunit

Sterkiella nova

UniProt P16458

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 2 DNA 1 5'-D(*GP*GP*GP*TP*TP*TP*TP*GP*GP*GP*G)-3' × 1 Telomere-binding protein alpha subunit × 1 （P29549） CHLORIDE ION × 4 1,2-ETHANEDIOL × 5 water × 3 Consistent with all polymers

Other States of the Same Protein in the Database

Monomer

None

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1jb7 1otc 1pa6 1ph1 1ph2 1ph3 1ph4 1ph5 1ph6 1ph7 1ph8 1ph9

14 assemblies; showing the first 12

View Construct and Data Evidence
UniProt name TEBB_OXYNO
Isoform —
PDB entities 3
Chains and sequence ranges Author chain B； PDBConstruct 1–385； UniProt 1–385

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_id2i0q
Deposition date deposition_date2006-08-11
Structure title titleCrystal structure of a telomere single-strand DNA-protein complex from O. nova with full-length alpha and beta telomere proteins
Keywords keywordsSINGLE STRAND DNA-PROTEIN COMPLEX, structural protein-DNA COMPLEX; structural protein/DNA
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.

2i0q__assembly_1__model_1

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

Download this curve (.dat)

2i0q__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.

2i0q__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）29.38 Å
Rg (electron density)28.66 Å
Total Rg29.32 Å
Atom count5584
Residues688
Excluded volume98428 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 2i0q__assembly_1__model_1 trimeric （3） 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 (6)

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6. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd2i0qa1
Class classb — All beta proteins
Fold Fold foldb.40 — OB-fold
Superfamily Superfamily superfamilyb.40.4 — Nucleic acid-binding proteins
Family Family familyb.40.4.3 — Single strand DNA-binding domain, SSB
Domain ID domain_idd2i0qa2
Class classb — All beta proteins
Fold Fold foldb.40 — OB-fold
Superfamily Superfamily superfamilyb.40.4 — Nucleic acid-binding proteins
Family Family familyb.40.4.3 — Single strand DNA-binding domain, SSB
Domain ID domain_idd2i0qa3
Class classb — All beta proteins
Fold Fold foldb.40 — OB-fold
Superfamily Superfamily superfamilyb.40.4 — Nucleic acid-binding proteins
Family Family familyb.40.4.3 — Single strand DNA-binding domain, SSB
Domain ID domain_idd2i0qb1
Class classb — All beta proteins
Fold Fold foldb.40 — OB-fold
Superfamily Superfamily superfamilyb.40.4 — Nucleic acid-binding proteins
Family Family familyb.40.4.3 — Single strand DNA-binding domain, SSB

CATH v4.4 (4 domains)

Domain ID domain_id2i0qA01
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily140 — Nucleic acid-binding proteins
Domain ID domain_id2i0qA02
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily140 — Nucleic acid-binding proteins
Domain ID domain_id2i0qA03
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily140 — Nucleic acid-binding proteins
Domain ID domain_id2i0qB00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology200 — Telomere-binding Protein Beta Subunit; Chain B
Homologous superfamily homologous superfamily10 — Telomere-binding Protein Beta Subunit; Chain
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7. Citations (3)