title: Liquid chromatographic analysis of amino acids: using dimethylamino-azobenzenesulfonyl chloride and Hypersil ODS column to analyze the composition of apo B peptides.
abstract: A reliable high-performance liquid chromatography (HPLC) method is described for the separation of dimethylamino-azobenzenesulfonyl-amino acid (DABS-AA). The separation is accomplished by reversed-phase chromatography on a Hypersil ODS column (4.6 x 150 mm) with a Hewlett-Packard liquid chromatography system. In addition to the developed sample and solvent preparation procedure, this precolumn modification method using dimethylaminoazobenzene sulfonyl chloride (DABS-CL) for amino acid analysis is proved reliable and sensitive. Five apolipoprotein B-100 tryptic peptides, two of them containing cysteine, were demonstrated as examples for the general application of this method in amino acid analysis. It is a useful method for analysis of cysteine- and cystine-containing peptide and, furthermore, for determination of sulfhydryl and disulfide linkages of proteins.
authors.affiliation: Department of Medicine, Baylor College of Medicine, Houston, Texas.
authors.forename: C Y
authors.initials: CY
authors.lastname: Yang
authors.forename: T
authors.initials: T
authors.lastname: Yang
authors.forename: B K
authors.initials: BK
authors.lastname: Yeh
mesh_terms: D000595:Amino Acid Sequence; D000596:Amino Acids / Q000032:analysis*; D053299:Apolipoprotein B-100; D001055:Apolipoproteins B / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation / Q000379:methods*; D008969:Molecular Sequence Data; D010446:Peptide Fragments / Q000737:chemistry; D014357:Trypsin; D004124:p-Dimethylaminoazobenzene / Q000031:analogs & derivatives* / Q000737:chemistry
chemical_list: D000596:Amino Acids; D053299:Apolipoprotein B-100; D001055:Apolipoproteins B; D010446:Peptide Fragments; C010572:4-N,N-dimethylaminoazobenzene-4'-sulfonyl chloride; D004124:p-Dimethylaminoazobenzene; D014357:Trypsin