Signaling ammonium across membranes through an ammonium sensor histidine kinase.

Pflüger T, Hernández CF, Lewe P, Frank F, Mertens H, Svergun D, Baumstark MW, Lunin VY, Jetten MSM, Andrade SLA, Nat Commun 9(1):164 (2018) Europe PMC

SASDCS9 – Ammonium transporter Ks-Amt5 (Batch)

ammonium sensor/transducer
MWexperimental 236 kDa
MWexpected 227 kDa
VPorod 482 nm3
log I(s) 1.43×104 1.43×103 1.43×102 1.43×101
ammonium sensor/transducer small angle scattering data  s, nm-1
ln I(s)
ammonium sensor/transducer Guinier plot ln 1.43×104 Rg: 4.9 nm 0 (4.9 nm)-2 s2
(sRg)2I(s)/I(0)
ammonium sensor/transducer Kratky plot 1.104 0 3 sRg
p(r)
ammonium sensor/transducer pair distance distribution function Rg: 4.8 nm 0 Dmax: 17 nm

Data validation


There are no models related to this curve.

Synchrotron SAXS data from solutions of Ammonium transporter Ks-Amt5 (Batch) in 20 mM Tris/HCl,100 mM NaCl, 5%(w/v) glycerol, 0.09%(w/v) CYMAL-5, pH 8 were collected on the EMBL P12 beam line at the PETRA III storage ring (DESY; Hamburg, Germany) using a Pilatus 2M detector at a sample-detector distance of 2.7 m and at a wavelength of λ = 0.124 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 0.050 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.

Batch mode Ks-Amt5 sample in 0.09% (w/v) CYMAL-5 detergent. Pooled fractions from offline SEC.

ammonium sensor/transducer (Ks-Amt5)
Mol. type   Protein
Organism   Candidatus Kuenenia stuttgartiensis
Olig. state   Trimer
Mon. MW   75.5 kDa
 
UniProt   Q1Q357
Sequence   FASTA