Rapid separation of amino acid phenylthiohydantoins by isocratic high-performance liquid chromatography
β Scribed by G.E. Tarr
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 485 KB
- Volume
- 111
- Category
- Article
- ISSN
- 0003-2697
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β¦ Synopsis
All common phenyhhiohydantoin amino acids derived from sequencing are identifiable in 6 to 9 min with an isocratic method based on buffered aqueous acetonitrile, an ODS stationary phase, and programmed flow which increases during the run. With constant flow the analysis requires 16 min. The effects of variation in percentage eluting solvent, ionic strength, anion, cation, pH, and temperature are defined.
π SIMILAR VOLUMES
Sixteen amino acid thiohydantoins encountered during COOH-terminal degradation of peptides and proteins with ammonium thiocyanate have been separated and identified by reverse phase high-performance liquid chromatography using a DuPont Zorbax ODS column and a novel procedure for preparation of thioh
Thin-layer chromatogram (6 x 6 cm) of the model mixture: (1) inorganic phosphate, (2) choline, (3) choline phosphate, (4) glycerophosphorylcholine, (5) glycerophosphate, (6) betaine. Solvent systems: First direction (vertical), methanol/water/conc. NH4 OH/chlorotorm/acetone (5 : 2 : 1 : 2 : 2); Seco