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1k8b

NMR Structure Analysis of the N-terminal Domain of Archaeal Translation Initiation Factor 2 Subunit beta

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

PROBABLE TRANSLATION INITIATION FACTOR 2 BETA SUBUNIT

Methanocaldococcus jannaschii

UniProt Q57562

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
1k81 1k8b

2 assemblies

Homodimer

None

Homotetramer

None

Other homooligomers

None

Heteromeric or nucleic-acid complex

None

View Construct and Data Evidence
UniProt name IF2B_METJA
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 1–52； UniProt 39–90

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_id1k8b
Deposition date deposition_date2001-10-23
Structure title titleNMR Structure Analysis of the N-terminal Domain of Archaeal Translation Initiation Factor 2 Subunit beta
Keywords keywordsN-terminal domain, aIF2 subunit beta, TRANSLATION; TRANSLATION
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.

1k8b__assembly_1__model_6

Assembly 1 · Model 6 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1k8b__assembly_1__model_6 | I(q)

10-2 10-1 104 105 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

1k8b__assembly_1__model_6 | 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）12.37 Å
Rg (electron density)10.71 Å
Total Rg12.31 Å
Atom count863
Residues52
Excluded volume7548 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1k8b__assembly_1__model_1 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 2 1k8b__assembly_1__model_2 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 3 1k8b__assembly_1__model_3 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 4 1k8b__assembly_1__model_4 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 5 1k8b__assembly_1__model_5 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 6 1k8b__assembly_1__model_6 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 7 1k8b__assembly_1__model_7 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 8 1k8b__assembly_1__model_8 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 9 1k8b__assembly_1__model_9 monomeric （1） Success 4.1.3-1-20251215 (887e7ef) View Download
1 10 1k8b__assembly_1__model_10 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_idd1k8ba_
Class classd — Alpha and beta proteins (a+b)
Fold Fold foldd.241 — Ribosome binding domain-like
Superfamily Superfamily superfamilyd.241.1 — Translation initiation factor 2 beta, aIF2beta, N-terminal domain
Family Family familyd.241.1.1 — Translation initiation factor 2 beta, aIF2beta, N-terminal domain

CATH v4.4 (1 domains)

Domain ID domain_id1k8bA00
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology30 — Defensin A-like
Homologous superfamily homologous superfamily50 — Translation initiation factor 2 beta, aIF2beta, N-terminal domain
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7. Citations (1)