title: Separation of DNA restriction fragments by ion-pair chromatography.
abstract: The separation of restriction endonuclease fragments of DNA on columns of Pharmacia PepRPC (C2/C18) has been studied. The effect of different concentrations of triethylammonium or tetrabutylammonium salts as ion-pairing reagents, as well as of physical parameters, such as flow-rate and sample load, has been investigated. With the use of triethylammonium buffers, removed by evaporation under vacuum, separated fragments were recovered in yields of 68%. Isolated fragments were accessible to further cleavage with restriction enzymes. Resolution of fragments ranging from 10 to 3000 base pairs depended primarily upon molecular size.
mesh_terms: D002851:Chromatography, High Pressure Liquid; D002852:Chromatography, Ion Exchange; D004262:DNA Restriction Enzymes / Q000302:isolation & purification*; D006868:Hydrolysis; D008970:Molecular Weight; D013050:Spectrometry, Fluorescence
chemical_list: D004262:DNA Restriction Enzymes