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Analytical and preparative separations of biologically active peptides by capillary and free-flow electromigration methods
Kašička, Václav ; Prusík, Zdeněk ; Sázelová, Petra ; Koval, Dušan ; Barth, Tomislav ; Hlaváček, Jan ; Ježek, Jan ; Klasová, Lenka ; Slaninová, Jiřina ; Velek, Jiří ; Vepřek, Pavel
Combination of capillary and free-flow electromigration methods has been applied to qualitative and quantitative microanalysis and preparative purification of biologically active peptides.
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Qualitative and quantitative microanalysis and preparative purification of biopeptides by capillary and continuous free-flow electrophoresis
Kašička, Václav ; Prusík, Zdeněk ; Sázelová, Petra ; Ježek, Jan ; Jiráček, Jiří ; Hlaváček, Jan ; Velek, Jiří ; Barth, Tomislav
High-performance capillary electrophoresis (HPCE) has been applied to qualitative and quantitative analysis of several biologically active peptides and their derivatives and fragments, e.g. insulins, insect oostatic hormones, and peptide and glycopeptide dendrimers.
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Semisynthetic preparation of human insulin analogs containing .I.N./I.-methylated B.sup.24./sup.-B.sup.25./sup. or B.sup.25./sup.-B.sup.26./sup. peptide bonds
Klasová, L. ; Huml, Karel ; Barthová, J. ; Ubik, Karel ; Kašička, Václav ; Škarda, Josef ; Hauzerová, Linda ; Barth, Tomislav ; Wollmer, A. ; Brandenburg, D. ; Ježek, Jan ; Velek, Jiří
Desoctapeptideinsulin (DOI), prepared by tryptic cleavage of porcine insulin, was utilized in the enzyme-catalyzed synthesis of human insulin analogs modified in the C-terminal region of the B-chain.
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Preparation and characterization of analogs of tetrapeptide B 23 -B 26 and octapeptide B 23 -B 30 of human insulin
Ježek, Jan ; Velek, Jiří ; Velková, Vlasta ; Klasová, L. ; Barthová, J. ; Ubik, Karel ; Kašička, Václav ; Barth, Tomislav ; Wollmer, A. ; Huml, Karel ; Hauzerová, Linda ; Brandenburg, D.
Gly-Phe-Phe-PheNH2, Gly-Phe-Phe-N(Me)Phe-NH2, Gly-Phe-N(Me)Phe-Phe-NH2, and Gly-Phe-Phe-N(Me)Tyr-NH2 and octapeptides Gly-Phe-Phe-N(Me)Phe-Thr-Pro-Lys(Pac)-Thr-OH and Gly-Phe-Phe-Phe-Thr-Pro-Lys(Pac)-Thr-OH. The compounds were isolated by preparative HPLC and characterized by amino acid analysis.
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