1ls2

Fitting of EF-Tu and tRNA in the Low Resolution Cryo-EM Map of an EF-Tu Ternary Complex (GDP and Kirromycin) Bound to E. coli 70S Ribosome

Method: ELECTRON MICROSCOPY Dmax: 102.5 Å Quality: GOOD

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

Elongation Factor Tu

OrganismNot specified

UniProt P0A6N1

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein–RNA Monomer Protein × 1 RNA 1 PDB declaration: dimeric(2) Consistent with all polymer counts Chain A; UniProt 1–393 Not recorded Phenylalanine transfer RNA × 1 ELECTRON MICROSCOPY cryo-EM buffer:Hepes-KOH buffer at pH 7.5;pH 7.5;Hepes-KOH buffer at pH 7.5 cryo-EM vitrification conditions:Cryogen ETHANE;Rapid-freezing in liquid ethane Resolution 16.80 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

13 other PDB entries and 24 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name EFTU_ECOLI
Isoform
PDB entities 2
Chains and sequence ranges Author chain A; PDBConstruct 1–393; UniProt 1–393

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.

SAXS scattering curve SAXS Profile

SAXS profile for 1ls2

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1ls2
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1ls2
Deposition date deposition_date2002-05-16
Structure title titleFitting of EF-Tu and tRNA in the Low Resolution Cryo-EM Map of an EF-Tu Ternary Complex (GDP and Kirromycin) Bound to E. coli 70S Ribosome
Keywords keywordsEF-Tu, ternary complex, cryo-EM, 70S E.coli ribosome, TRANSLATION-RNA COMPLEX; TRANSLATION/RNA
Experimental Method methodELECTRON MICROSCOPY

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier27.17
Radius of gyration Rg (electron density) rg_electron24.24
Forward intensity I(0) i041115800.00
Molecular weight molecular_weight44632.0 kDa
Excluded volume excluded_volume52424 ų
Envelope volume envelope_volume59057 ų
Hydration-shell volume shell_volume20320 ų
Envelope diameter envelope_diameter106.7
Shell Rg shell_rg29.75
Envelope Rg envelope_rg29.04
Shape Rg shape_rg27.19
Total Rg total_rg24.66
Total atoms total_atoms76
Residues n_residues76
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax102.5
Rg (real space) rg_real27.60
Rg uncertainty (real space) rg_real_error0.91
I(0) (real space) i0_real4.1110e+07
I(0) uncertainty (real space) i0_real_error6.9080e+05
Rg (reciprocal space) rg_reciprocal27.46
I(0) (reciprocal space) i0_reciprocal41110000.0000
Solution quality estimate total_estimate0.7870
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary28.3
Skewness Skewness skewness0.832
Kurtosis Kurtosis kurtosis0.706
Angular range angular_range— – 0.2900 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha10440000.0000
Real-space data points n_real_points59
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.511; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.714; Smooth: 0.979

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

7. Fold Classification (SCOP + CATH) 1 domains

SCOP 2.08 (1 domains)

Domain ID domain_idd1ls2a_
Class classi — Low resolution protein structures
Fold Fold foldi.1 — Ribosome and ribosomal fragments
Superfamily Superfamily superfamilyi.1.1 — Ribosome and ribosomal fragments
Family Family familyi.1.1.1 — Ribosome complexes

8. Citations (6)

9. Files and Curves (10)