Reverse Phase Ion Pair High Performance Liquid Chromatography of Viral Tryptic Glycopeptides

Genotypic transitions among bluetongue viral isolates from domestic ruminants in Colorado during 1981-1984

Two predominant electropherotypes of bluetongue virus (BTV) serotype 11 isolates from cattle during a 1981-1984 field study in eastern Colorado were characterized. The genomes of strains isolated from the first 2 years of the study had 1 predominant electropherotype (CO81), with the exception of 1 isolate that differed only in the migration of segment 3. A second electropherotype (CO83), with differences in the migration of 4 segments, coexisted in the same region during 1983 and 1984 with strains having the CO81 RNA profile. The genomes of CO81 and CO83 were also distinguishable from those of the US prototype of BTV 11. Analysis of the polypeptides of representative strains of each electropherotype by sodium dodecyl sulfate-polyacrylamide gel electrophoresis indicated that the proteins were very similar. The occurrence of the CO81 electropherotype was apparently the result of multiple viral infections since the positions of 7 segments had faint second bands and single-banded variants were isolated after serial plaque purifications. In addition, protein 7 of 1 of the CO81 isolates and protein 7 of the single-banded variant differed as shown by reverse phase-high performance liquid chromatography of 35S-methionine-labeled tryptic peptides.

Chapter 12 Compound Biopolymers and Biooligomers

This chapter is devoted to the separation of simple saccharides. In this chapter, the rapid chromatographic separation of natural oligomeric or polymeric compounds containing important molecular moieties of a different type are discussed, such as nucleoprotein complexes, glycolipids, glycopeptides and glycoside oligomeric derivatives. In addition, separations of several natural complex substances that are not well known are discussed. This chapter concludes with a brief discussion on the separation techniques used for the miscellaneous polymeric and oligomeric substances.

Use of mini-octadecylsilane ultrasphere column in high-pressure liquid chromatography for protein structural studies

Using a single mini-octadecylsilane (ODS) 5-micron ultrasphere column (0.46 X 4.5 cm) and linear gradients of different solvents, all the aspects of protein structural analysis have been defined. The effectiveness of the system has been evaluated by separating the alpha and beta chains of hemoglobin and their tryptic peptides, then performing amino acid analysis and, finally, identifying the phenylthiohydantoin derivatives of amino acids.