these isolated active complexes are nucleoprotein filaments with the following characteristics : ( i ) a contour length that is at least 1.5 times that of the corresponding duplex dna molecule , ( ii ) an ordered structure visualized by negative staining as a striated filament with a repeat distance of 9.0 nm and a width of 9.3 nm , ( iii ) approximately 8 molecules of reca protein and 20 nucleotide residues per striation .
C1521970
characteristics
C1444754
length