Base composition heterogeneity of mammalian DNAs in CsCl-netropsin density gradient.
Author(s) -
T. Guttann,
Hana Votavová,
L. Pivec
Publication year - 1976
Publication title -
nucleic acids research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 9.008
H-Index - 537
eISSN - 1362-4954
pISSN - 0305-1048
DOI - 10.1093/nar/3.3.835
Subject(s) - netropsin , biology , density gradient , ionic strength , homogeneous , centrifugation , dna , biochemistry , chemistry , physics , thermodynamics , quantum mechanics , minor groove , aqueous solution
DNAs of 15 mammals and some lower organisms were analysed by CsCl-netropsin density gradient centrifugation. Increased resolving power of this method enabled to detect many new components in mammalian DNAs. Distinct components were detected in the density range of the main band. These components found in different mammalian DNAs have probably limited variation in the G+C content. Most of other components seems to be species specific. The DNAs of lower organisms form homogeneous band even in the presence of netropsin. The relation between densities in CsCl-netropsin and CsCl density gradient is nonlinear. This result supports a hypothesis that in high ionic strength netropsin is preferentially bound to (dA.dT) clusters.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom