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Comparative CD and X-ray diffraction studies of DNA compact particules which were obtained in PEG-containing water-salt solutions, have been carried out. Compact particles, formed from native DNA, produce a psi CD spectrum (characterized by a negative band at lambda-270 nm) and a small-angle X-ray diffraction pattern, which shows two reflections: I at 34-40 A and II at 80-90 A (together with its second-order reflection). Compact particules, formed from DNA molecules with partially disordered secondary structure, do not produce the psi CD spectrum and the reflection I, while the reflection II remains unchanged. It is suggested that the spacing of 34-40 A is associated with a side-by-side packing of DNA fragments in "microcrystallization' regions in compact particules and that such "microcrystallization' accounts for the generation of the psi CD spectrum.
Y M Evdokimov, and
T L Pyatigorskaya, and
O F Polyvtsev, and
N M Akimenko, and
V A Kadykov, and
D Y Tsvankin, and
Y M Varshavsky
January 1976,
Molekuliarnaia biologiia,
Y M Evdokimov, and
T L Pyatigorskaya, and
O F Polyvtsev, and
N M Akimenko, and
V A Kadykov, and
D Y Tsvankin, and
Y M Varshavsky
January 1977,
Molekuliarnaia biologiia,
Y M Evdokimov, and
T L Pyatigorskaya, and
O F Polyvtsev, and
N M Akimenko, and
V A Kadykov, and
D Y Tsvankin, and
Y M Varshavsky
January 1977,
Molekuliarnaia biologiia,
Y M Evdokimov, and
T L Pyatigorskaya, and
O F Polyvtsev, and
N M Akimenko, and
V A Kadykov, and
D Y Tsvankin, and
Y M Varshavsky
October 1977,
Nucleic acids research,
Y M Evdokimov, and
T L Pyatigorskaya, and
O F Polyvtsev, and
N M Akimenko, and
V A Kadykov, and
D Y Tsvankin, and
Y M Varshavsky
January 1979,
Nucleic acids research,
Y M Evdokimov, and
T L Pyatigorskaya, and
O F Polyvtsev, and
N M Akimenko, and
V A Kadykov, and
D Y Tsvankin, and
Y M Varshavsky
March 1976,
Biopolymers,
Y M Evdokimov, and
T L Pyatigorskaya, and
O F Polyvtsev, and
N M Akimenko, and
V A Kadykov, and
D Y Tsvankin, and
Y M Varshavsky
January 1986,
Molekuliarnaia biologiia,
Y M Evdokimov, and
T L Pyatigorskaya, and
O F Polyvtsev, and
N M Akimenko, and
V A Kadykov, and
D Y Tsvankin, and
Y M Varshavsky
October 1968,
Biopolymers,
Y M Evdokimov, and
T L Pyatigorskaya, and
O F Polyvtsev, and
N M Akimenko, and
V A Kadykov, and
D Y Tsvankin, and
Y M Varshavsky
December 1973,
FEBS letters,
Y M Evdokimov, and
T L Pyatigorskaya, and
O F Polyvtsev, and
N M Akimenko, and
V A Kadykov, and
D Y Tsvankin, and
Y M Varshavsky
December 2000,
Acta crystallographica. Section B, Structural science,
