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Statements

Subject Item
n2:RIV%2F60461373%3A22340%2F07%3A00018103%21RIV08-AV0-22340___
rdf:type
n18:Vysledek skos:Concept
dcterms:description
Chiral recognition of bilirubin IX-a, biliverdin IX-a, and bilirubin ditaurate dianions by cyclodextrins was studied using a combination of vibrational and electronic circular dichroism. Biliverdin forms inclusion complexes with b-cyclodextrin and b-methylcyclodextrin. Bilirubin bonds to both cyclodextrins by means of hydrogen bonds and only shallow inclusions that are restricted by the presence of COO- in the pigment structure. Bilirubin ditaurate complexes are realized by a weak inclusion of the whole molecule, or some part of it, into the cyclodextrin cavity and stabilization of the conformation by hydrogen bonds. Bilirubin and bilirubin ditaurate can be recognized by cyclodextrin and methylcyclodextrin in the form of opposite conformers. Spectroscopic characteristics of the different conformations of the bile pigments were obtained for the first time by vibrational circular dichroism techniques. Metodami vibračního a elektronového cirkulárního dichroismu bylo studováno chirální rozpoznávání dianiontů bilirubinu IX-a, biliverdinu IX-a, a ditaurátu bilirubinu a cyklodextriny. Biliverdin tvoří s b-cyclodextrinem and b-methylcyclodextrinem inkluzní komplexy. Bilirubin se váže k oběma cyklodextrinům vodíkovými vazbami, které jsou podmíněny přítomností skupin COO- ve struktuře barviva. Komplex ditaurátu bilirubinu vniká slabou inkluzí celé molekuly nebo její části do dutiny cyklodextrinu a konformace je stabilizovaná vodíkovými vazbami. Bilirubin a ditaurát bilirubinu jsou rozpoznávány cyklodextrinem a methylcyklodextrinem ve formě opačných enantiomerů. Poprvé byly získány charakteristické signály konformací studovaných barviv ve spektrech vibračního cirkulárního dichroismu. Chiral recognition of bilirubin IX-a, biliverdin IX-a, and bilirubin ditaurate dianions by cyclodextrins was studied using a combination of vibrational and electronic circular dichroism. Biliverdin forms inclusion complexes with b-cyclodextrin and b-methylcyclodextrin. Bilirubin bonds to both cyclodextrins by means of hydrogen bonds and only shallow inclusions that are restricted by the presence of COO- in the pigment structure. Bilirubin ditaurate complexes are realized by a weak inclusion of the whole molecule, or some part of it, into the cyclodextrin cavity and stabilization of the conformation by hydrogen bonds. Bilirubin and bilirubin ditaurate can be recognized by cyclodextrin and methylcyclodextrin in the form of opposite conformers. Spectroscopic characteristics of the different conformations of the bile pigments were obtained for the first time by vibrational circular dichroism techniques.
dcterms:title
Bile pigment complexes with cyclodextrins: electronic and vibrational circular dichroism study Bile pigment complexes with cyclodextrins: electronic and vibrational circular dichroism study Bile pigment complexes with cyclodextrins: electronic and vibrational circular dichroism study
skos:prefLabel
Bile pigment complexes with cyclodextrins: electronic and vibrational circular dichroism study Bile pigment complexes with cyclodextrins: electronic and vibrational circular dichroism study Bile pigment complexes with cyclodextrins: electronic and vibrational circular dichroism study
skos:notation
RIV/60461373:22340/07:00018103!RIV08-AV0-22340___
n4:strany
2061-2068
n4:aktivita
n5:P n5:Z
n4:aktivity
P(IAA400550702), P(OC 135), Z(MSM6046137307)
n4:cisloPeriodika
17
n4:dodaniDat
n9:2008
n4:domaciTvurceVysledku
n15:6564844
n4:druhVysledku
n16:J
n4:duvernostUdaju
n8:S
n4:entitaPredkladatele
n19:predkladatel
n4:idSjednocenehoVysledku
411751
n4:idVysledku
RIV/60461373:22340/07:00018103
n4:jazykVysledku
n17:eng
n4:klicovaSlova
bilirubin; biliverdine: bilirubin ditaurate; inclusion complex; vibrational circular dichroism; electronic circular dichroism; chiral recognition
n4:klicoveSlovo
n7:electronic%20circular%20dichroism n7:bilirubin n7:vibrational%20circular%20dichroism n7:inclusion%20complex n7:biliverdine%3A%20bilirubin%20ditaurate n7:chiral%20recognition
n4:kodStatuVydavatele
IE - Irsko
n4:kontrolniKodProRIV
[029DEFEAB88B]
n4:nazevZdroje
Tetrahedron Asymmetry
n4:obor
n11:CB
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
2
n4:projekt
n6:OC%20135 n6:IAA400550702
n4:rokUplatneniVysledku
n9:2007
n4:svazekPeriodika
18
n4:tvurceVysledku
Urbanová, Marie Goncharova, Iryna
n4:zamer
n13:MSM6046137307
s:issn
0957-4166
s:numberOfPages
8
n14:organizacniJednotka
22340