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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1002/mrc.4183
|2 doi
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|a pubmed24n0824.xml
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|a (DE-627)NLM247421197
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|a (NLM)25808514
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Lee, Ga Hyang
|e verfasserin
|4 aut
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|a Solid-state 31P NMR investigation on the status of guanine nucleotides in paclitaxel-stabilized microtubules
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|c 2015
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 08.01.2016
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|a Date Revised 24.04.2015
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2015 John Wiley & Sons, Ltd.
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|a Microtubule dynamics is a target for many chemotherapeutic drugs. In order to understand the biochemical effects of paclitaxel on the GTPase activity of tubulin, the status of guanine nucleotides in microtubules was investigated by (31)P cross-polarization magic angle spinning (CPMAS) NMR. Microtubules were freshly prepared in vitro in the presence of paclitaxel and then lyophilized in sucrose buffer for solid-state NMR experiments. A (31)P CPMAS NMR spectrum with the SNR of 25 was successfully acquired from the lyophilized microtubule sample. The broadness of the (31)P spectral lines in the spectrum indicates that the molecular environments around the guanine nucleotides inside tubulin may not be as crystalline as reported by many diffraction studies. Deconvolution of the spectrum into four spectral components was carried out in comparison with the (31)P NMR spectra obtained from five control samples. The spectral analysis suggested that about 13% of the nucleotides were present as GTP and 37% as GDP in the β-tubulin (E-site) of the microtubules. It was found that most of the GDPs were present as GDP-Pi complex in the microtubules, which seems to be one of the effects of paclitaxel binding
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a 31P
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|a CPMAS
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|a GTP
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|a NMR
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|a microtubules
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|a paclitaxel
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|a Guanine Nucleotides
|2 NLM
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|a Phosphorus Isotopes
|2 NLM
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|a Tubulin Modulators
|2 NLM
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|a GTP Phosphohydrolases
|2 NLM
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|a EC 3.6.1.-
|2 NLM
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|a Paclitaxel
|2 NLM
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| 650 |
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|a P88XT4IS4D
|2 NLM
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|a Oh, Su Young
|e verfasserin
|4 aut
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|a Yeo, Kwon Joo
|e verfasserin
|4 aut
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| 700 |
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|a Ferdous, Taslima
|e verfasserin
|4 aut
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|a Cho, Meeyeon
|e verfasserin
|4 aut
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|a Paik, Younkee
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Magnetic resonance in chemistry : MRC
|d 1985
|g 53(2015), 5 vom: 15. Mai, Seite 330-6
|w (DE-627)NLM098179667
|x 1097-458X
|7 nnns
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|g volume:53
|g year:2015
|g number:5
|g day:15
|g month:05
|g pages:330-6
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|u http://dx.doi.org/10.1002/mrc.4183
|3 Volltext
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