About: Stability of Ca2+, Zn2+ and Pb2+ complexes with valinomycin in nitrobenzene saturated with water

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About: Stability of Ca2+, Zn2+ and Pb2+ complexes with valinomycin in nitrobenzene saturated with water Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Valinomycin is one of the antibiotics facilitating the transport of cations across a biological membrane [ 1,2]. The ability of valinomycin to carry ions is primarily due to its forming a molecular complex with them. As revealed in particular for the K+ complex by NMR [3-9], infrared spectra [3-7] and X-ray diffraction [10-13], the complex formation requires a change in the conformation of the depsipeptide ring after which the six peptide units fortify a bracelet-like form of the molecule by intramolecular hydrogen bonds and the six carbonylic groups adopt a hexadentate formation binding the metal cation by a polycentric dipolar bond. The change is more dramatic in polar media, where valinomycin has a propeller-like conformation [14] due to intermolecular hydrogen bonds with the solvent. Valinomycin is one of the antibiotics facilitating the transport of cations across a biological membrane [ 1,2]. The ability of valinomycin to carry ions is primarily due to its forming a molecular complex with them. As revealed in particular for the K+ complex by NMR [3-9], infrared spectra [3-7] and X-ray diffraction [10-13], the complex formation requires a change in the conformation of the depsipeptide ring after which the six peptide units fortify a bracelet-like form of the molecule by intramolecular hydrogen bonds and the six carbonylic groups adopt a hexadentate formation binding the metal cation by a polycentric dipolar bond. The change is more dramatic in polar media, where valinomycin has a propeller-like conformation [14] due to intermolecular hydrogen bonds with the solvent. (en) Stabilita Ca2+, Zn2+ and Pb2+ komplexuu valinomycinu v nitrobenzenu nasycenem vodou. (cs)
Title	Stability of Ca2+, Zn2+ and Pb2+ complexes with valinomycin in nitrobenzene saturated with water Stabilita Ca2+, Zn2+ and Pb2+ komplexuu valinomycinu v nitrobenzenu nasycenem vodou (cs) Stability of Ca2+, Zn2+ and Pb2+ complexes with valinomycin in nitrobenzene saturated with water (en)
skos:prefLabel	Stability of Ca2+, Zn2+ and Pb2+ complexes with valinomycin in nitrobenzene saturated with water Stabilita Ca2+, Zn2+ and Pb2+ komplexuu valinomycinu v nitrobenzenu nasycenem vodou (cs) Stability of Ca2+, Zn2+ and Pb2+ complexes with valinomycin in nitrobenzene saturated with water (en)
skos:notation	RIV/61388980:_____/07:00097431!RIV08-AV0-61388980
http://linked.open.../vavai/riv/strany	1531;1534
http://linked.open...avai/riv/aktivita	S Z
http://linked.open...avai/riv/aktivity	S, Z(AV0Z40320502), Z(MSM4977751303)
http://linked.open...iv/cisloPeriodika	8
http://linked.open...vai/riv/dodaniDat	2008
http://linked.open...aciTvurceVysledku	Hálová, Jaroslava
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav anorganické chemie AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	451961
http://linked.open...ai/riv/idVysledku	RIV/61388980:_____/07:00097431
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	biological membranes; extraction (en)
http://linked.open.../riv/klicoveSlovo	extraction biological membranes
http://linked.open...odStatuVydavatele	PL - Polská republika
http://linked.open...ontrolniKodProRIV	[88FE557173BF]
http://linked.open...i/riv/nazevZdroje	Polish Journal of Chemistry
http://linked.open...in/vavai/riv/obor	CA
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...UplatneniVysledku	2007
http://linked.open...v/svazekPeriodika	81
http://linked.open...iv/tvurceVysledku	Makrlík, E. Vaňura, P. Hálová, Jaroslava
http://linked.open...n/vavai/riv/zamer	Design, syntéza a charakterizace klastrů, kompozitů, komplexů a dalších sloučenin na bázi anorganických látek; mechanismy a kinetika jejich interakcí Predikce poruch heterogenních materiálů, komponent mechanických a biomechanických systémů.
issn	0137-5083
number of pages	4 (xsd:int)

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