Sucrose gradient analysis: computer simulation and measurement of the parameters involved in the sedimentation of DNA molecules
- PMID: 143820
- DOI: 10.1515/znc-1977-7-810
Sucrose gradient analysis: computer simulation and measurement of the parameters involved in the sedimentation of DNA molecules
Abstract
The Montecarlo method is used to computer simulate a random distribution of molecular lengths generated by inducing T4 DNA fragmentation through the decay of 32P atoms introduced in the molecule. Taking into account the experimental conditions we find that the value of alpha for alkali sucrose gradients is 0.46 +/- 0.02 and does not depend on the running time. Our findings also prove that the computer simulation can be utilized to analyze sedimentation profiles of DNA molecules fragmented in vivo.
Similar articles
-
The sucrose gradient and native DNA S20,W, an examination of measurement problems.Biochim Biophys Acta. 1976 Dec 13;454(3):567-77. doi: 10.1016/0005-2787(76)90282-3. Biochim Biophys Acta. 1976. PMID: 793631
-
Use of ethidium bromide fluorescence enhancement to detect duplex DNA and DNA bacteriophages during zone sedimentation in sucrose gradients: molecular weight of DNA as a function of sedimentation rate.Biochemistry. 1978 Apr 4;17(7):1166-70. doi: 10.1021/bi00600a005. Biochemistry. 1978. PMID: 656381
-
Interpretation of sucrose gradient sedimentation pattern of deoxyribonucleic acid fragments resulting from random breaks.J Virol. 1969 Jul;4(1):24-30. doi: 10.1128/JVI.4.1.24-30.1969. J Virol. 1969. PMID: 5804949 Free PMC article.
-
Sedimentation rate as a measure of molecular weight of DNA.Biophys J. 1963 Jul;3(4):309-21. doi: 10.1016/s0006-3495(63)86823-x. Biophys J. 1963. PMID: 14016998 Free PMC article.
-
Computer simulation of density-gradient centrifugation.Subcell Biochem. 1979;6:117-41. doi: 10.1007/978-1-4615-7945-8_2. Subcell Biochem. 1979. PMID: 377582 Review. No abstract available.