About: Vibrational and electronic circular dichroism study of bile pigments: Complexes of bilirubin and biliverdin with metals

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Complexation of bilirubin (BR) and biliverdin (BV) with biogenic and toxic metals (Mn, Cu, Cd, Co, Fe, Ni, Zn, and Ag) has been studied by means of electronic circular dichroism (ECD) and vibrational circular dichroism (VCD). Poly-l-lysine and β-cyclodextrin in water were chosen as matrices capable of recognizing the single stereoconformer of the pigments with defined M-helicity. Such systems allow structural changes caused by complexation of pigments with metals in aqueous solution at pH 10-11 to be followed using chiroptical methods, which are intrinsically sensitive to spatial structure. These and other spectroscopic techniques have revealed that BV and BR form monomeric complexes with Cd, Cu, and Zn and dimeric complexes with Mn. The stabilities of the complexes with Fe, Ni, Co, and Ag are remarkably lower. The sign of the ECD and VCD patterns of the complexed BV does not change for the chelates of any of the studied metals other than Zn, this exception being interpreted in terms of manifesta Complexation of bilirubin (BR) and biliverdin (BV) with biogenic and toxic metals (Mn, Cu, Cd, Co, Fe, Ni, Zn, and Ag) has been studied by means of electronic circular dichroism (ECD) and vibrational circular dichroism (VCD). Poly-l-lysine and β-cyclodextrin in water were chosen as matrices capable of recognizing the single stereoconformer of the pigments with defined M-helicity. Such systems allow structural changes caused by complexation of pigments with metals in aqueous solution at pH 10-11 to be followed using chiroptical methods, which are intrinsically sensitive to spatial structure. These and other spectroscopic techniques have revealed that BV and BR form monomeric complexes with Cd, Cu, and Zn and dimeric complexes with Mn. The stabilities of the complexes with Fe, Ni, Co, and Ag are remarkably lower. The sign of the ECD and VCD patterns of the complexed BV does not change for the chelates of any of the studied metals other than Zn, this exception being interpreted in terms of manifesta (en)
Title	Vibrational and electronic circular dichroism study of bile pigments: Complexes of bilirubin and biliverdin with metals Vibrational and electronic circular dichroism study of bile pigments: Complexes of bilirubin and biliverdin with metals (en)
skos:prefLabel	Vibrational and electronic circular dichroism study of bile pigments: Complexes of bilirubin and biliverdin with metals Vibrational and electronic circular dichroism study of bile pigments: Complexes of bilirubin and biliverdin with metals (en)
skos:notation	RIV/60461373:22340/09:00021837!RIV10-MSM-22340___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(IAA400550702), Z(MSM6046137307)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Urbanová, Marie
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	Vysoká škola chemicko-technologická v Praze / Fakulta chemicko-inženýrská
http://linked.open...dnocenehoVysledku	348797
http://linked.open...ai/riv/idVysledku	RIV/60461373:22340/09:00021837
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	bilirubin; biliverdin; circular dichroism; metal complex; enzyme model (en)
http://linked.open.../riv/klicoveSlovo	bilirubin enzyme model metal complex circular dichroism biliverdin
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[6391F8CC3DFB]
http://linked.open...i/riv/nazevZdroje	Analytical Biochemistry
http://linked.open...in/vavai/riv/obor	CB
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Spectroscopic and theoretical methods for non-covalent molecular interactions
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	392
http://linked.open...iv/tvurceVysledku	Urbanová, Marie Goncharova, Iryna
http://linked.open...ain/vavai/riv/wos	000267920600005
http://linked.open...n/vavai/riv/zamer	Physico-chemical methods of analysis and characterization of chemical systems and biosystems
issn	0003-2697
number of pages	9 (xsd:int)
http://localhost/t...ganizacniJednotka	22340

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