← Back to search
2ply

Structure of the mRNA binding fragment of elongation factor SelB in complex with SECIS RNA.

Method: X-RAY DIFFRACTION
▼

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

Selenocysteine-specific elongation factor

Moorella thermoacetica

UniProt Q46455

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–RNA Monomer Protein 1 RNA 1 ;RNA (5'-R(*GP*GP*CP*GP*UP*UP*GP*CP*CP*GP*GP*UP*CP*UP*GP*GP*CP*AP*AP*CP*GP*CP*C)-3') ; × 1 MAGNESIUM ION × 10 SODIUM ION × 1 CALCIUM ION × 2 CHLORIDE ION × 3 water × 2 Consistent with all polymers
2 Protein–RNA Monomer Protein 1 RNA 1 ;RNA (5'-R(*GP*GP*CP*GP*UP*UP*GP*CP*CP*GP*GP*UP*CP*UP*GP*GP*CP*AP*AP*CP*GP*CP*C)-3') ; × 1 MAGNESIUM ION × 7 CHLORIDE ION × 1 water × 2 Consistent with all polymers
3 Protein–RNA Homooligomer Protein 2 RNA 2 ;RNA (5'-R(*GP*GP*CP*GP*UP*UP*GP*CP*CP*GP*GP*UP*CP*UP*GP*GP*CP*AP*AP*CP*GP*CP*C)-3') ; × 2 MAGNESIUM ION × 17 SODIUM ION × 1 CALCIUM ION × 2 CHLORIDE ION × 4 water × 4 Consistent with all polymers

Other States of the Same Protein in the Database

Monomer
1lva 2v9v

2 assemblies

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex
1wsu 2ply 2ply 2ply

4 assemblies

View Construct and Data Evidence
UniProt name SELB_MOOTH
Isoform —
PDB entities 2
Chains and sequence ranges Author chain A； PDBConstruct 1–258； UniProt 377–634 Author chain B； PDBConstruct 1–258； UniProt 377–634

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_id2ply
Deposition date deposition_date2007-04-20
Structure title titleStructure of the mRNA binding fragment of elongation factor SelB in complex with SECIS RNA.
Keywords keywordsprotein-rna, complex, rna, winged helix, selb, SECIS, translation-RNA COMPLEX; translation/RNA
Experimental Method methodX-RAY DIFFRACTION
▼

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.

2ply__assembly_2__model_1

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

Download this curve (.dat)

2ply__assembly_2__model_1 | I(q)

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

2ply__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）21.38 Å
Rg (electron density)20.55 Å
Total Rg21.35 Å
Atom count2113
Residues221
Excluded volume35843 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 2ply__assembly_1__model_1 dimeric （2） Success 4.1.3-1-20251215 (887e7ef) View Download
2 1 2ply__assembly_2__model_1 dimeric （2） Success 4.1.3-1-20251215 (887e7ef) View Download
3 1 2ply__assembly_3__model_1 tetrameric （4） Success 4.1.3-1-20251215 (887e7ef) View Download
▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (7)

▼

6. Fold Classification (SCOP + CATH) 9 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd2plya1
Class classa — All alpha proteins
Fold Fold folda.4 — DNA/RNA-binding 3-helical bundle
Superfamily Superfamily superfamilya.4.5 — 'Winged helix' DNA-binding domain
Family Family familya.4.5.35 — C-terminal fragment of elongation factor SelB
Domain ID domain_idd2plya2
Class classa — All alpha proteins
Fold Fold folda.4 — DNA/RNA-binding 3-helical bundle
Superfamily Superfamily superfamilya.4.5 — 'Winged helix' DNA-binding domain
Family Family familya.4.5.35 — C-terminal fragment of elongation factor SelB
Domain ID domain_idd2plya3
Class classa — All alpha proteins
Fold Fold folda.4 — DNA/RNA-binding 3-helical bundle
Superfamily Superfamily superfamilya.4.5 — 'Winged helix' DNA-binding domain
Family Family familya.4.5.35 — C-terminal fragment of elongation factor SelB
Domain ID domain_idd2plya4
Class classa — All alpha proteins
Fold Fold folda.4 — DNA/RNA-binding 3-helical bundle
Superfamily Superfamily superfamilya.4.5 — 'Winged helix' DNA-binding domain
Family Family familya.4.5.35 — C-terminal fragment of elongation factor SelB

CATH v4.4 (5 domains)

Domain ID domain_id2plyA02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain
Domain ID domain_id2plyA03
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain
Domain ID domain_id2plyA04
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain
Domain ID domain_id2plyB01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily2770 —
Domain ID domain_id2plyB02
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology10 — Arc Repressor Mutant, subunit A
Homologous superfamily homologous superfamily10 — Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain
▶

7. Citations (2)