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231224s2016 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/erw067
|2 doi
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|a pubmed24n1223.xml
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|a (NLM)26969746
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|a DE-627
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|e rakwb
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|a eng
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|a Gnanasekaran, Thiyagarajan
|e verfasserin
|4 aut
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|a Transfer of the cytochrome P450-dependent dhurrin pathway from Sorghum bicolor into Nicotiana tabacum chloroplasts for light-driven synthesis
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|c 2016
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 13.12.2016
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|a Date Revised 13.12.2023
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|a published: Print-Electronic
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|a CommentIn: J Exp Bot. 2016 Apr;67(8):2123-5. - PMID 27022183
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|a Citation Status MEDLINE
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|a © The Author 2016. Published by Oxford University Press on behalf of the Society for Experimental Biology.
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|a Plant chloroplasts are light-driven cell factories that have great potential to act as a chassis for metabolic engineering applications. Using plant chloroplasts, we demonstrate how photosynthetic reducing power can drive a metabolic pathway to synthesise a bio-active natural product. For this purpose, we stably engineered the dhurrin pathway from Sorghum bicolor into the chloroplasts of Nicotiana tabacum (tobacco). Dhurrin is a cyanogenic glucoside and its synthesis from the amino acid tyrosine is catalysed by two membrane-bound cytochrome P450 enzymes (CYP79A1 and CYP71E1) and a soluble glucosyltransferase (UGT85B1), and is dependent on electron transfer from a P450 oxidoreductase. The entire pathway was introduced into the chloroplast by integrating CYP79A1, CYP71E1, and UGT85B1 into a neutral site of the N. tabacum chloroplast genome. The two P450s and the UGT85B1 were functional when expressed in the chloroplasts and converted endogenous tyrosine into dhurrin using electrons derived directly from the photosynthetic electron transport chain, without the need for the presence of an NADPH-dependent P450 oxidoreductase. The dhurrin produced in the engineered plants amounted to 0.1-0.2% of leaf dry weight compared to 6% in sorghum. The results obtained pave the way for plant P450s involved in the synthesis of economically important compounds to be engineered into the thylakoid membrane of chloroplasts, and demonstrate that their full catalytic cycle can be driven directly by photosynthesis-derived electrons
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Cytochrome P450
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|a chloroplast
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|a dhurrin pathway
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|a light-driven
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|a photosynthesis
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|a thylakoids.
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|a Glucosides
|2 NLM
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|a Nitriles
|2 NLM
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|a Protein Subunits
|2 NLM
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|a Cytochrome P-450 Enzyme System
|2 NLM
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| 650 |
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|a 9035-51-2
|2 NLM
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| 650 |
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|a dhurrin
|2 NLM
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|a P5999IY65C
|2 NLM
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1 |
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|a Karcher, Daniel
|e verfasserin
|4 aut
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|a Nielsen, Agnieszka Zygadlo
|e verfasserin
|4 aut
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|a Martens, Helle Juel
|e verfasserin
|4 aut
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|a Ruf, Stephanie
|e verfasserin
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|a Kroop, Xenia
|e verfasserin
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|a Olsen, Carl Erik
|e verfasserin
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|a Motawie, Mohammed Saddik
|e verfasserin
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|a Pribil, Mathias
|e verfasserin
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|a Møller, Birger Lindberg
|e verfasserin
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|a Bock, Ralph
|e verfasserin
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|a Jensen, Poul Erik
|e verfasserin
|4 aut
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 67(2016), 8 vom: 15. Apr., Seite 2495-506
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:67
|g year:2016
|g number:8
|g day:15
|g month:04
|g pages:2495-506
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|u http://dx.doi.org/10.1093/jxb/erw067
|3 Volltext
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