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Evaluation of Brachypodium distachyon L-Tyrosine Decarboxylase Using L-Tyrosine Over-Producing Saccharomyces cerevisiae

To demonstrate that herbaceous biomass is a versatile gene resource, we focused on the model plant Brachypodium distachyon, and screened the B. distachyon for homologs of tyrosine decarboxylase (TDC), which is involved in the modification of aromatic compounds. A total of 5 candidate genes were iden...

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Autores principales: Noda, Shuhei, Shirai, Tomokazu, Mochida, Keiichi, Matsuda, Fumio, Oyama, Sachiko, Okamoto, Mami, Kondo, Akihiko
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4440718/
https://www.ncbi.nlm.nih.gov/pubmed/25996877
http://dx.doi.org/10.1371/journal.pone.0125488
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author Noda, Shuhei
Shirai, Tomokazu
Mochida, Keiichi
Matsuda, Fumio
Oyama, Sachiko
Okamoto, Mami
Kondo, Akihiko
author_facet Noda, Shuhei
Shirai, Tomokazu
Mochida, Keiichi
Matsuda, Fumio
Oyama, Sachiko
Okamoto, Mami
Kondo, Akihiko
author_sort Noda, Shuhei
collection PubMed
description To demonstrate that herbaceous biomass is a versatile gene resource, we focused on the model plant Brachypodium distachyon, and screened the B. distachyon for homologs of tyrosine decarboxylase (TDC), which is involved in the modification of aromatic compounds. A total of 5 candidate genes were identified in cDNA libraries of B. distachyon and were introduced into Saccharomyces cerevisiae to evaluate TDC expression and tyramine production. It is suggested that two TDCs encoded in the transcripts Bradi2g51120.1 and Bradi2g51170.1 have L-tyrosine decarboxylation activity. Bradi2g51170.1 was introduced into the L-tyrosine over-producing strain of S. cerevisiae that was constructed by the introduction of mutant genes that promote deregulated feedback inhibition. The amount of tyramine produced by the resulting transformant was 6.6-fold higher (approximately 200 mg/L) than the control strain, indicating that B. distachyon TDC effectively converts L-tyrosine to tyramine. Our results suggest that B. distachyon possesses enzymes that are capable of modifying aromatic residues, and that S. cerevisiae is a suitable host for the production of L-tyrosine derivatives.
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spelling pubmed-44407182015-05-29 Evaluation of Brachypodium distachyon L-Tyrosine Decarboxylase Using L-Tyrosine Over-Producing Saccharomyces cerevisiae Noda, Shuhei Shirai, Tomokazu Mochida, Keiichi Matsuda, Fumio Oyama, Sachiko Okamoto, Mami Kondo, Akihiko PLoS One Research Article To demonstrate that herbaceous biomass is a versatile gene resource, we focused on the model plant Brachypodium distachyon, and screened the B. distachyon for homologs of tyrosine decarboxylase (TDC), which is involved in the modification of aromatic compounds. A total of 5 candidate genes were identified in cDNA libraries of B. distachyon and were introduced into Saccharomyces cerevisiae to evaluate TDC expression and tyramine production. It is suggested that two TDCs encoded in the transcripts Bradi2g51120.1 and Bradi2g51170.1 have L-tyrosine decarboxylation activity. Bradi2g51170.1 was introduced into the L-tyrosine over-producing strain of S. cerevisiae that was constructed by the introduction of mutant genes that promote deregulated feedback inhibition. The amount of tyramine produced by the resulting transformant was 6.6-fold higher (approximately 200 mg/L) than the control strain, indicating that B. distachyon TDC effectively converts L-tyrosine to tyramine. Our results suggest that B. distachyon possesses enzymes that are capable of modifying aromatic residues, and that S. cerevisiae is a suitable host for the production of L-tyrosine derivatives. Public Library of Science 2015-05-21 /pmc/articles/PMC4440718/ /pubmed/25996877 http://dx.doi.org/10.1371/journal.pone.0125488 Text en © 2015 Noda et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Noda, Shuhei
Shirai, Tomokazu
Mochida, Keiichi
Matsuda, Fumio
Oyama, Sachiko
Okamoto, Mami
Kondo, Akihiko
Evaluation of Brachypodium distachyon L-Tyrosine Decarboxylase Using L-Tyrosine Over-Producing Saccharomyces cerevisiae
title Evaluation of Brachypodium distachyon L-Tyrosine Decarboxylase Using L-Tyrosine Over-Producing Saccharomyces cerevisiae
title_full Evaluation of Brachypodium distachyon L-Tyrosine Decarboxylase Using L-Tyrosine Over-Producing Saccharomyces cerevisiae
title_fullStr Evaluation of Brachypodium distachyon L-Tyrosine Decarboxylase Using L-Tyrosine Over-Producing Saccharomyces cerevisiae
title_full_unstemmed Evaluation of Brachypodium distachyon L-Tyrosine Decarboxylase Using L-Tyrosine Over-Producing Saccharomyces cerevisiae
title_short Evaluation of Brachypodium distachyon L-Tyrosine Decarboxylase Using L-Tyrosine Over-Producing Saccharomyces cerevisiae
title_sort evaluation of brachypodium distachyon l-tyrosine decarboxylase using l-tyrosine over-producing saccharomyces cerevisiae
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4440718/
https://www.ncbi.nlm.nih.gov/pubmed/25996877
http://dx.doi.org/10.1371/journal.pone.0125488
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