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231224s2014 xx |||||o 00| ||eng c |
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|a 10.1016/j.plantsci.2014.07.009
|2 doi
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|a pubmed25n0806.xml
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|a (DE-627)NLM241886031
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|a (NLM)25219312
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|a (PII)S0168-9452(14)00180-0
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Baiya, Supaporn
|e verfasserin
|4 aut
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|a Expression and enzymatic properties of rice (Oryza sativa L.) monolignol β-glucosidases
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|c 2014
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 18.05.2015
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|a Date Revised 18.03.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2014 Elsevier Ireland Ltd. All rights reserved.
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|a Monolignol glucosides and their β-glucosidases are found in monocots, but their biological roles are unclear. Phylogenetic analysis of rice (Oryza sativa L.) glycoside hydrolase family GH1 β-glucosidases indicated that Os4BGlu14, Os4BGlu16, and Os4BGlu18 are closely related to known monolignol β-glucosidases. An optimized Os4BGlu16 cDNA and cloned Os4BGlu18 cDNA were used to express fusion proteins with His6 tags in Pichia pastoris and Escherichia coli, respectively. The secreted Os4BGlu16 fusion protein was purified from media by immobilized metal affinity chromatography (IMAC), while Os4BGlu18 was extracted from E. coli cells and purified by anion exchange chromatography, hydrophobic interaction chromatography and IMAC. Os4BGlu16 and Os4BGlu18 hydrolyzed the monolignol glucosides coniferin (kcat/KM, 21.6mM(-1)s(-1) for Os4BGlu16 and for Os4BGlu18) and syringin (kcat/KM, 22.8mM(-1)s(-1) for Os4BGlu16 and 24.0mM(-1)s(-1) for Os4BGlu18) with much higher catalytic efficiencies than other substrates. In quantitative RT-PCR, highest Os4BGlu14 mRNA levels were detected in endosperm, embryo, lemma, panicle and pollen. Os4BGlu16 was detected highest in leaf from 4 to 10 weeks, endosperm and lemma, while Os4BGlu18 mRNA was most abundant in vegetative stage from 1 week to 4 weeks, pollen and lemma. These data suggest a role for Os4BGlu16 and Os4BGlu18 monolignol β-glucosidases in both vegetative and reproductive rice tissues
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Expression
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|a Glycosides
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|a Monolignols
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|a Rice (Oryza sativa L.)
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|a β-Glucosidase
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|a Cinnamates
|2 NLM
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|a DNA, Complementary
|2 NLM
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| 650 |
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|a Glucosides
|2 NLM
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|a Phenylpropionates
|2 NLM
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|a Plant Proteins
|2 NLM
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|a RNA, Messenger
|2 NLM
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|a Lignin
|2 NLM
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|a 9005-53-2
|2 NLM
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|a Cellulases
|2 NLM
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|a EC 3.2.1.-
|2 NLM
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|a beta-Glucosidase
|2 NLM
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|a EC 3.2.1.21
|2 NLM
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| 650 |
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|a syringin
|2 NLM
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| 650 |
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|a I6F5B11C96
|2 NLM
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| 650 |
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|a coniferin
|2 NLM
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| 650 |
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|a M6616XLU2J
|2 NLM
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| 700 |
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|a Hua, Yanling
|e verfasserin
|4 aut
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|a Ekkhara, Watsamon
|e verfasserin
|4 aut
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| 700 |
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|a Ketudat Cairns, James R
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant science : an international journal of experimental plant biology
|d 1985
|g 227(2014) vom: 07. Okt., Seite 101-9
|w (DE-627)NLM098174193
|x 1873-2259
|7 nnns
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| 773 |
1 |
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|g volume:227
|g year:2014
|g day:07
|g month:10
|g pages:101-9
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|u http://dx.doi.org/10.1016/j.plantsci.2014.07.009
|3 Volltext
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|a GBV_ILN_350
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|a AR
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|d 227
|j 2014
|b 07
|c 10
|h 101-9
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