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| Description
| - Glucosides of trans-zeatin occur widely in plant tissues, formed either by O-glucosylation of the hydroxylated side chain or N-glucosylation of the purine ring structure. O-Glucosylation is stereo-specific: the O-glucosyltransferase encoded by the Phaseolus lunatus ZOG1 gene has high affinity for trans-zeatin as the substrate, whereas the enzyme encoded by the maize (Zea mays) cisZOG1 gene prefers cis-zeatin. Here we show that hydroxylated derivatives of benzyladenine (topolins) are also substrates of ZOG1 and cisZOG1. The m-OH and o-OH derivatives are the preferred substrate of ZOG1 and cisZOG1, respectively. Among the hydroxylated derivatives of thidiazuron tested, the only enzyme/substrate combination resulting in conversion was cisZOG1/(o-OH) thidiazuron. The abilities of these cytokinins to serve as substrates to the glucosyltransferases were in a large part correlated with their biological activities in the P. lunatus callus bioassay, indicating that there may be similarities ...
- Glucosides of trans-zeatin occur widely in plant tissues, formed either by O-glucosylation of the hydroxylated side chain or N-glucosylation of the purine ring structure. O-Glucosylation is stereo-specific: the O-glucosyltransferase encoded by the Phaseolus lunatus ZOG1 gene has high affinity for trans-zeatin as the substrate, whereas the enzyme encoded by the maize (Zea mays) cisZOG1 gene prefers cis-zeatin. Here we show that hydroxylated derivatives of benzyladenine (topolins) are also substrates of ZOG1 and cisZOG1. The m-OH and o-OH derivatives are the preferred substrate of ZOG1 and cisZOG1, respectively. Among the hydroxylated derivatives of thidiazuron tested, the only enzyme/substrate combination resulting in conversion was cisZOG1/(o-OH) thidiazuron. The abilities of these cytokinins to serve as substrates to the glucosyltransferases were in a large part correlated with their biological activities in the P. lunatus callus bioassay, indicating that there may be similarities ... (en)
- trans-Zeatin je v rostlinách hojně glukozylován, a to jak na hydroxylovaném postranním řetězci (O-glukozidy), tak na purinovém jádře (N-glukozidy). O-Glukozylace je stereo-specifická: O-glukozyltransferáza kódovaná genem ZOG1 z Phaseolus lunatus má vysokou afinitu vůči trans-zeatinu, zatímco enzym kódovaný genem cisZOG1 z kukuřice (Zea mays) preferuje cis-zeatin. Zjistili jsme, že substrátem pro ZOG1 a cisZOG1 jsou rovněž hydroxylované deriváty benzyladeninu (topoliny). m-OH Derivát je velmi dobrým substrátem pro ZOG1, zatímco o-OH derivát je preferován cisZOG1. Z testovaných hydroxylovaných derivátů thidiazuronu, došlo ke glukozylaci pouze u kombinace cisZOG1/(o-OH)thidiazuronu. Schopnost cytokininů interagovat s trans-zeatin O-glukozyltransferázou korelovala s jejich biologickou aktivitou ve fazolovém kalusovém biotestu, což naznačuje, že může existovat podobnost mezi cytokininovým vazebným místem enzymů a příslušných receptorů. Tento předpoklad byl potvrzen porovnáním subst... (cs)
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| Title
| - Topolins and hydroxylated thidiazuron derivatives are substrates of cytokinin O-glucosyltransferase with position specificity related to receptor recognition
- Topoliny a hydroxylované deriváty thidiazuronu jsou substráty cytokinin O-glukozyltransferáz, substrátová specifita těchto enzymů koreluje se specifitou cytokininových receptorů (cs)
- Topolins and hydroxylated thidiazuron derivatives are substrates of cytokinin O-glucosyltransferase with position specificity related to receptor recognition (en)
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| skos:prefLabel
| - Topolins and hydroxylated thidiazuron derivatives are substrates of cytokinin O-glucosyltransferase with position specificity related to receptor recognition
- Topoliny a hydroxylované deriváty thidiazuronu jsou substráty cytokinin O-glukozyltransferáz, substrátová specifita těchto enzymů koreluje se specifitou cytokininových receptorů (cs)
- Topolins and hydroxylated thidiazuron derivatives are substrates of cytokinin O-glucosyltransferase with position specificity related to receptor recognition (en)
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| skos:notation
| - RIV/61389030:_____/05:00030611!RIV06-GA0-61389030
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(GA522/04/0549), P(ME 406), Z(AV0Z50380511)
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
| |
| http://linked.open...iv/duvernostUdaju
| |
| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
| |
| http://linked.open...ai/riv/idVysledku
| - RIV/61389030:_____/05:00030611
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| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - ARABIDOPSIS-THALIANA; AROMATIC CYTOKININS; PHASEOLUS-VULGARIS (en)
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| http://linked.open.../riv/klicoveSlovo
| |
| http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
|
| http://linked.open...ontrolniKodProRIV
| |
| http://linked.open...i/riv/nazevZdroje
| |
| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
| |
| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Dobrev, Petre
- Vaňková, Radomíra
- Martin, R. C.
- Mok, D. W. S.
- Mok, M. C.
- Sakakibara, H.
- Yonekura-Sakakibara, K.
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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