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Molecular weight and polydispersity of calf-thymus DNA: static light-scattering and size-exclusion chromatography with dual detection

B. Porsch, R. Laga, J. Horský, C. Konák, K. Ulbrich

. 2009 ; 10 (11) : 3148-3150.

Jazyk angličtina Země Spojené státy americké

Typ dokumentu srovnávací studie, časopisecké články, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/bmc12025518

Plausible calf-thymus DNA molecular weight distribution can be obtained by size-exclusion chromatography with dual low-angle light scattering/refractometric detection at sufficiently low flow rate. The distribution extends over three decades of molecular weight and is characterized by weight average molecular weight M(w) = 8418000 and polydispersity index M(w)/M(n) = 5.2. After strongly scattering impurities had been removed from the sample using adsorption properties of the 3 mum mixed-cellulose-ester filter membranes, static light-scattering measurement in flow injection mode was feasible and gave M(w) = 8580000, corroborating the veracity of SEC results.

Citace poskytuje Crossref.org

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