title: Isotachophoretic analysis of peptides.
abstract: Operating conditions for the qualitative and quantitative determination of plasma kinins, human angiotensin, reduced and oxidized glutathiones and oligopeptides with the same amino acid residues by capillary-tube isotachophoresis using a potential gradient detector have been established. The potential unit (PU) value is proposed as a qualitative index for capillary-tube isotachophoresis with a potential gradient detector. As it is unaffected by changes in the operating conditions, the PU value permits inter-laboratory comparison of data. The coefficient of variation of this index under the various operating conditions used was less than 1.69%.
mesh_terms: D000595:Amino Acid Sequence; D000804:Angiotensin II / Q000032:analysis; D004586:Electrophoresis; D005978:Glutathione / Q000032:analysis; D006801:Humans; D007705:Kinins / Q000032:analysis; D008722:Methods; D009842:Oligopeptides / Q000032:analysis; D010084:Oxidation-Reduction; D010455:Peptides / Q000032:analysis*; D013696:Temperature
chemical_list: D007705:Kinins; D009842:Oligopeptides; D010455:Peptides; D000804:Angiotensin II; D005978:Glutathione