Small angle x-ray scattering analysis of PE25, PPE41, EspG5 and EccA5 N-terminal domain complex of ESX-5 pathway of Mycobacterium tuberculosis

Rajlakshmi K.

SASDXE7 – Complex of PE25, PPE41, EspG5 and EccA5 N-terminal domain of ESX-5 pathway of Mycobacterium tuberculosis

PE-PGRS family protein PE25
PPE family protein PPE41
ESX-5 secretion-associated protein EspG5
ESX-5 secretion system protein EccA5
MWexperimental 88 kDa
MWexpected 92 kDa
VPorod 141 nm3
log I(s) 1.61×104 1.61×103 1.61×102 1.61×101
PE-PGRS family protein PE25 PPE family protein PPE41 ESX-5 secretion-associated protein EspG5 ESX-5 secretion system protein EccA5 small angle scattering data  s, nm-1
ln I(s)
PE-PGRS family protein PE25 PPE family protein PPE41 ESX-5 secretion-associated protein EspG5 ESX-5 secretion system protein EccA5 Guinier plot ln 1.61×104 Rg: 4.6 nm 0 (4.6 nm)-2 s2
(sRg)2I(s)/I(0)
PE-PGRS family protein PE25 PPE family protein PPE41 ESX-5 secretion-associated protein EspG5 ESX-5 secretion system protein EccA5 Kratky plot 1.104 0 3 sRg
p(r)
PE-PGRS family protein PE25 PPE family protein PPE41 ESX-5 secretion-associated protein EspG5 ESX-5 secretion system protein EccA5 pair distance distribution function Rg: 4.6 nm 0 Dmax: 13.7 nm

Data validation


Fits and models


log I(s)
 s, nm-1
PE-PGRS family protein PE25 PPE family protein PPE41 ESX-5 secretion-associated protein EspG5 ESX-5 secretion system protein EccA5 DAMFILT model

SAXS data from solutions of Complex of PE25, PPE41, EspG5 and EccA5 N-terminal domain of ESX-5 pathway of Mycobacterium tuberculosis in 50mM HEPES, 200mM NaCl, pH 8 were collected on the Anton Paar SAXSpace instrument (CSIR-Central Drug Research Institute, Lucknow, India) using a Mythen2 R 1K detector at a sample-detector distance of 0.3 m and at a wavelength of λ = 0.154 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). One solute concentration of 3.00 mg/ml was measured at 10°C. Four successive 900 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.

PE-PGRS family protein PE25 (PE25t)
Mol. type   Protein
Organism   Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
Olig. state   Monomer
Mon. MW   9 kDa
 
UniProt   I6X486 (7-90)
Sequence   FASTA
 
PPE family protein PPE41 (PPE41t)
Mol. type   Protein
Organism   Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
Olig. state   Monomer
Mon. MW   19.9 kDa
 
UniProt   Q79FE1 (1-174)
Sequence   FASTA
 
ESX-5 secretion-associated protein EspG5 (EspG5)
Mol. type   Protein
Organism   Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
Olig. state   Monomer
Mon. MW   32.4 kDa
 
UniProt   O53943
Sequence   FASTA
 
ESX-5 secretion system protein EccA5 (EccA5NT)
Mol. type   Protein
Organism   Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
Olig. state   Monomer
Mon. MW   30.9 kDa
 
UniProt   P9WPI1 (1-278)
Sequence   FASTA