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1zc8

Coordinates of tmRNA, SmpB, EF-Tu and h44 fitted into Cryo-EM map of the 70S ribosome and tmRNA complex

Method: ELECTRON MICROSCOPY
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1. Protein Identity and Related Structures Protein Identity & Related Structures

No usable UniProt protein identity is available for this entry.

The relationship tables retain this entry's assembly and composition data, but cross-PDB links for the same protein cannot be established reliably without a unified protein identity.

Assembly Composition of the Current Entry

Assembly Physical composition Protein state 蛋白 / DNA / RNA / 其他Polymer Data consistency
1 Protein–RNA Heteromer 2 / 0 / 9 / 0 Consistent with all polymers

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_id1zc8
Deposition date deposition_date2005-04-11
Structure title titleCoordinates of tmRNA, SmpB, EF-Tu and h44 fitted into Cryo-EM map of the 70S ribosome and tmRNA complex
Keywords keywordsSmpB, tmRNA, EF-Tu, h44, 30S, 16s rRNA, Cryo-EM, trans-translation, 70S, RNA binding protein-RNA COMPLEX; RNA binding protein/RNA
Experimental Method methodELECTRON MICROSCOPY
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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.

1zc8__assembly_1__model_1

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

Download this curve (.dat)

1zc8__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.

1zc8__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）60.34 Å
Rg (electron density)50.29 Å
Total Rg49.70 Å
Atom count416
Residues416
Excluded volume76103 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 1zc8__assembly_1__model_1 undecameric （11） 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 (11)

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6. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd1zc8k1
Class classb — All beta proteins
Fold Fold foldb.111 — Small protein B (SmpB)
Superfamily Superfamily superfamilyb.111.1 — Small protein B (SmpB)
Family Family familyb.111.1.1 — Small protein B (SmpB)
Domain ID domain_idd1zc8y1
Class classb — All beta proteins
Fold Fold foldb.43 — Reductase/isomerase/elongation factor common domain
Superfamily Superfamily superfamilyb.43.3 — Translation proteins
Family Family familyb.43.3.1 — Elongation factors
Domain ID domain_idd1zc8y2
Class classb — All beta proteins
Fold Fold foldb.44 — Elongation factor/aminomethyltransferase common domain
Superfamily Superfamily superfamilyb.44.1 — EF-Tu/eEF-1alpha/eIF2-gamma C-terminal domain
Family Family familyb.44.1.1 — EF-Tu/eEF-1alpha/eIF2-gamma C-terminal domain
Domain ID domain_idd1zc8y3
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.37 — P-loop containing nucleoside triphosphate hydrolases
Superfamily Superfamily superfamilyc.37.1 — P-loop containing nucleoside triphosphate hydrolases
Family Family familyc.37.1.8 — G proteins
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7. Citations (6)