Nucleoid remodeling during environmental adaptation is regulated by HU-dependent DNA bundling.

Remesh SG, Verma SC, Chen JH, Ekman AA, Larabell CA, Adhya S, Hammel M, Nat Commun 11(1):2905 (2020) Europe PMC

SASDF46 – DNA-binding protein HU-alpha bound to 80 base-pair DNA at pH 4.5 with 100 mM NaCl

80bp_DNA Forward
80bp_DNA Reverse
DNA-binding protein HU-alpha
MWexperimental 350 kDa
MWexpected 59 kDa
log I(s)
80bp_DNA Forward 80bp_DNA Reverse DNA-binding protein HU-alpha small angle scattering data  s, nm-1
(sRg)2I(s)
80bp_DNA Forward 80bp_DNA Reverse DNA-binding protein HU-alpha Kratky plot 0 3 sRg

Data validation


There are no models related to this curve.

Synchrotron SAXS data from solutions of DNA-binding protein HU-alpha bound to 80 base-pair DNA in 10 mM sodium acetate, 100 mM NaCl, pH 4.5 were collected on the 12.3.1 (SIBYLS) beam line at the Advanced Light Source (ALS) storage ring (Berkeley, CA, USA) using a Pilatus3 X 2M detector at a sample-detector distance of 1.5 m and at a wavelength of λ = 0.103 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). 300 successive 3 second frames were collected at 10°C. The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted.

SAXS profile corresponds to a protein-DNA complex between bacterial nucleoid associated protein HUalpha and 80bp DNA. Under these conditions, the complex forms lamellar structures visible as Bragg Diffraction peaks.

80bp_DNA Forward
Mol. type   DNA
Organism   Escherichia coli
Olig. state   Monomer
Mon. MW   24.8 kDa
Sequence   FASTA
 
80bp_DNA Reverse
Mol. type   DNA
Organism   Escherichia coli
Olig. state   Monomer
Mon. MW   24.6 kDa
Sequence   FASTA
 
DNA-binding protein HU-alpha
Mol. type   Protein
Organism   Escherichia coli
Olig. state   Unknown
Mon. MW   9.5 kDa
 
UniProt   P0ACF0 (1-90)
Sequence   FASTA