Structural insights of the elongation factor EF-Tu complexes in protein translation of Mycobacterium tuberculosis.

Zhan B, Gao Y, Gao W, Li Y, Li Z, Qi Q, Lan X, Shen H, Gan J, Zhao G, Li J, Commun Biol 5(1):1052 (2022) Europe PMC

SASDQD5 – Elongation factor-Tu and Elongation factor-Ts complex from Mycobacterium tuberculosis

Elongation factor Tu
Elongation factor Ts
MWexperimental 70 kDa
MWexpected 72 kDa
VPorod 111 nm3
log I(s) 5.47×10-2 5.47×10-3 5.47×10-4 5.47×10-5
Elongation factor Tu Elongation factor Ts small angle scattering data  s, nm-1
ln I(s)
Elongation factor Tu Elongation factor Ts Guinier plot ln 5.48×10-2 Rg: 3.1 nm 0 (3.1 nm)-2 s2
(sRg)2I(s)/I(0)
Elongation factor Tu Elongation factor Ts Kratky plot 1.104 0 3 sRg
p(r)
Elongation factor Tu Elongation factor Ts pair distance distribution function Rg: 3.2 nm 0 Dmax: 11.2 nm

Data validation


Fits and models


log I(s)
 s, nm-1
Elongation factor Tu Elongation factor Ts DAMMIN model

Synchrotron SAXS data from solutions of the complex formed between elongation factor-Tu and elongation factor-Ts in 20 mM Tris, 100 mM NaCl, pH 8 were collected on the BL19U2 beam line at the Shanghai Synchrotron Radiation Facility (SSRF; Shanghai, China) using a Pilatus 1M detector at a sample-detector distance of 2.6 m and at a wavelength of λ = 0.13 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). One solute concentration of 1.00 mg/ml was measured at 20°C. 20 successive 1 second frames were collected. The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted.

The bead model shown in this entry is the volume and bead occupancy corrected model based on the alignment of an individual model cohort. It does not represent the corresponding fit to the data as displayed in this entry.

Elongation factor Tu
Mol. type   Protein
Organism   Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
Olig. state   Monomer
Mon. MW   43.6 kDa
 
UniProt   P9WNN1 (1-396)
Sequence   FASTA
 
Elongation factor Ts
Mol. type   Protein
Organism   Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
Olig. state   Monomer
Mon. MW   28.8 kDa
 
UniProt   P9WNM1
Sequence   FASTA