the enzyme kinetic studies with endonucleases specific for single-stranded dna and the thermal denaturation analyses of dna showed that a high mobility group ( hmg ) nonhistone protein fraction hmg ( 1 + 2 ) , composed of hmg1 and hmg2 , has an activity to unwind dna partially at low protein-to-dna weight ratio .
C0012935
single-stranded dna
C0012854
dna