Recombinant production of A1S_0222 from Acinetobacter baumannii ATCC 17978 and confirmation of its DNA-(adenine N6)-methyltransferase activity.

Blaschke U, Suwono B, Zafari S, Ebersberger I, Skiebe E, Jeffries CM, Svergun DI, Wilharm G, Protein Expr Purif 151:78-85 (2018) Europe PMC

SASDD32 – DNA-(adenine N6)-methyltransferase from Acinetobacter baumannii ATCC 17978

DNA-(adenine N6)-methyltransferase
MWI(0) 52 kDa
MWexpected 49 kDa
VPorod 96 nm3
log I(s) 3.76×103 3.76×102 3.76×101 3.76×100
DNA-(adenine N6)-methyltransferase small angle scattering data  s, nm-1
ln I(s)
DNA-(adenine N6)-methyltransferase Guinier plot ln 3.77×103 Rg: 2.9 nm 0 (2.9 nm)-2 s2
(sRg)2I(s)/I(0)
DNA-(adenine N6)-methyltransferase Kratky plot 1.104 0 3 sRg
p(r)
DNA-(adenine N6)-methyltransferase pair distance distribution function Rg: 3.0 nm 0 Dmax: 11.1 nm

Data validation


Fits and models


log I(s)
 s, nm-1
DNA-(adenine N6)-methyltransferase DAMMIN model
DNA-(adenine N6)-methyltransferase DAMFILT model

Synchrotron SAXS data from solutions of DNA-(adenine N6)-methyltransferase in 150mM NaCl, 10mM Tris, 1mM DTT, 5% v/v glycerol, pH 7.4 were collected at the P12 beam line at the PETRA III storage ring (Hamburg, Germany) using a Pilatus 2M detector at a sample-detector distance of 3 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 2.40 mg/ml was measured at 10°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 and the data were scaled to protein concentration.

The individual DAMMIN models used to generate that averaged spatial representation of the protein (DAMFILT model) are included in the full entry zip archive as well as the refinement of the averaged structure using DAMSTART.

DNA-(adenine N6)-methyltransferase (A1S_0222)
Mol. type   Protein
Organism   Acinetobacter baumannii
Olig. state   Monomer
Mon. MW   48.9 kDa
Sequence   FASTA