The Active Conformation of Glutamate Synthase and its Binding to Ferredoxin

van den Heuvel R, Svergun D, Petoukhov M Coda A, Curti B, Ravasio S, Vanoni M, Mattevi A, Journal of Molecular Biology 330(1):113-128 (2003) DOI

SASDLN7 – 1:1 complex of Ferredoxin-dependent glutamate synthase 2 (FdGlts) with ferredoxin

Ferredoxin-dependent glutamate synthase 2
Ferredoxin-1
MWexperimental 191 kDa
MWexpected 180 kDa
VPorod 262 nm3
log I(s) 9.94×102 9.94×101 9.94×100 9.94×10-1
Ferredoxin-dependent glutamate synthase 2 Ferredoxin-1 small angle scattering data  s, nm-1
ln I(s)
Ferredoxin-dependent glutamate synthase 2 Ferredoxin-1 Guinier plot ln 9.95×102 Rg: 3.6 nm 0 (3.6 nm)-2 s2
(sRg)2I(s)/I(0)
Ferredoxin-dependent glutamate synthase 2 Ferredoxin-1 Kratky plot 1.104 0 3 sRg
p(r)
Ferredoxin-dependent glutamate synthase 2 Ferredoxin-1 pair distance distribution function Rg: 3.7 nm 0 Dmax: 12.3 nm

Data validation


Fits and models


log I(s)
 s, nm-1
Ferredoxin-dependent glutamate synthase 2 Ferredoxin-1 OTHER model

Synchrotron SAXS data from the 1:1 complex formed between ferredoxin-dependent glutamate synthase 2 (FdGlts) and ferredoxin in Hepes– KOH buffer, pH 7.5 were collected on the EMBL X33 beam line at the DORIS III storage ring (DESY, Hamburg, Germany) using a 1D Gas detector detector at a sample-detector distance of 2.2 m and at a wavelength of λ = 0.15 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). Solute concentrations ranging between 3 and 17 mg/ml were measured . The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted. The low angle data collected at lower concentration were merged with the highest concentration high angle data to yield the final composite scattering curve.

Experimental temperature: UNKNOWN. X-ray exposure time: UNKNOWN. Specific buffer composition: UNKNOWN.

Tags: X33
Ferredoxin-dependent glutamate synthase 2 (FdGlts)
Mol. type   Protein
Organism   Synechocystis sp. (strain PCC 6803 / Kazusa)
Olig. state   Monomer
Mon. MW   169.5 kDa
 
UniProt   P55038 (1-1556)
Sequence   FASTA
 
Ferredoxin-1 (Fd)
Mol. type   Protein
Organism   Nostoc sp. (strain ATCC 29151 / PCC 7119)
Olig. state   Monomer
Mon. MW   10.8 kDa
 
UniProt   P0A3C8 (1-99)
Sequence   FASTA