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Melectin analogues: The influence of dendrimerization on antimicrobial and hemolytic activity
Niederhafner, Petr ; Šafařík, Martin ; Ježek, Jan ; Borovičková, Lenka ; Bednárová, Lucie ; Fučík, Vladimír ; Čeřovský, Václav ; Slaninová, Jiřina
Dimers and tetramers of MEP and MEP derivatives were synthesized on Fmoc-Lys(Fmoc)-Rink amide resin, the tetramer was obtained from the dimer C-terminally extended via Cys-Cys linkage. In general, the dendrimerization of MEP led to an increase of haemolytic activity but did not improve substantially its antimicrobial properties.
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Novel biologically active peptides from the venom of the solitary bee Macropis fulvipes (HYMENOPTERA: MELITTIDAE)
Monincová, Lenka ; Slaninová, Jiřina ; Voburka, Zdeněk ; Hovorka, Oldřich ; Fučík, Vladimír ; Borovičková, Lenka ; Bednárová, Lucie ; Buděšínský, Miloš ; Straka, J. ; Čeřovský, Václav
Two peptides (macropine-1 and macropin-2) were isolated, their structure determined by Edman degradation and mass spectrometry, which exhibited potent antimicrobial activity against both Gram-positive and -negative bacteria and moderate hemolytic activity against rat erythrocytes. We prepared several MAC-1 analogs to study the effect of their structure on antimicrobial and hemolytic activities.
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New peptides with antimicrobial activity isolated from the venom of the bumblebee Bombus pascuorum (Hymenoptera: Apidae)
Ježek, Rudolf ; Janechová, D. ; Cvačka, Josef ; Slaninová, Jiřina ; Voburka, Zdeněk ; Hovorka, Oldřich ; Fučík, Vladimír ; Borovičková, Lenka ; Maloň, Petr ; Čeřovský, Václav
Six new heptadecapeptides were isolated and synthesized by standard Fmoc solid phase peptide synthesistogether with several structural analogues. Antimicrobial activities were correlated with the peptides hydrophobicity, hydrophobic moment, alpha-helicity and HPLC retention time.
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In vitro and in vivo studies of the neuroprotective peptide humanin using 125I-radiolabeled humanin derivatives
Evangelou, A. ; Zikos, C. ; Benaki, D. ; Pelecanou, M. ; Bouziotis, P. ; Papadopoulos, M. ; Borovičková, Lenka ; Veselá, Iva ; Elbert, Tomáš ; Kunešová, G. ; Pirmettis, I. ; Paravatou-Petsotas, M. ; Slaninová, Jiřina ; Livaniou, E.
Four new HN-derivatives were synthesized: Y-PAGASRLLLTGEIDLP (Y-des-Leu-RG-PAGA, 1), Y-PAGASRLLLLTGEIDLP (Y-RG-PAGA, 2), Y-SALLRSIPAPAGASRLLLTGEIDLP (Y-des-Leu-Colivelin, 3), Y-SALLRSIPAPAGASRLLLLTGEIDLP (Y-Colivelin, 4), their neuroprotective action was evaluated in the T-maze test and the most active ones were monoradioiodinated with 125I and the labelled peptides used for binding and biodistribution studies.
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