Document Detail

Biosynthesis of cis,cis-muconic acid and its aromatic precursors, catechol and protocatechuic acid, from renewable feedstocks by Saccharomyces cerevisiae.
MedLine Citation:
PMID:  23001678     Owner:  NLM     Status:  MEDLINE    
Adipic acid is a high-value compound used primarily as a precursor for the synthesis of nylon, coatings, and plastics. Today it is produced mainly in chemical processes from petrochemicals like benzene. Because of the strong environmental impact of the production processes and the dependence on fossil resources, biotechnological production processes would provide an interesting alternative. Here we describe the first engineered Saccharomyces cerevisiae strain expressing a heterologous biosynthetic pathway converting the intermediate 3-dehydroshikimate of the aromatic amino acid biosynthesis pathway via protocatechuic acid and catechol into cis,cis-muconic acid, which can be chemically dehydrogenated to adipic acid. The pathway consists of three heterologous microbial enzymes, 3-dehydroshikimate dehydratase, protocatechuic acid decarboxylase composed of three different subunits, and catechol 1,2-dioxygenase. For each heterologous reaction step, we analyzed several potential candidates for their expression and activity in yeast to compose a functional cis,cis-muconic acid synthesis pathway. Carbon flow into the heterologous pathway was optimized by increasing the flux through selected steps of the common aromatic amino acid biosynthesis pathway and by blocking the conversion of 3-dehydroshikimate into shikimate. The recombinant yeast cells finally produced about 1.56 mg/liter cis,cis-muconic acid.
Christian Weber; Christine Brückner; Sheila Weinreb; Claudia Lehr; Christine Essl; Eckhard Boles
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2012-09-21
Journal Detail:
Title:  Applied and environmental microbiology     Volume:  78     ISSN:  1098-5336     ISO Abbreviation:  Appl. Environ. Microbiol.     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-11-09     Completed Date:  2013-04-15     Revised Date:  2013-07-11    
Medline Journal Info:
Nlm Unique ID:  7605801     Medline TA:  Appl Environ Microbiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  8421-30     Citation Subset:  IM    
Institute of Molecular Biosciences, Goethe University Frankfurt, Frankfurt am Main, Germany.
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MeSH Terms
Biosynthetic Pathways / genetics
Carbon / metabolism
Catechols / metabolism*
Gene Expression
Hydroxybenzoates / metabolism*
Metabolic Engineering*
Recombinant Proteins / genetics,  metabolism
Saccharomyces cerevisiae / genetics*,  metabolism*
Shikimic Acid / analogs & derivatives,  metabolism
Sorbic Acid / analogs & derivatives*,  metabolism
Reg. No./Substance:
0/Catechols; 0/Hydroxybenzoates; 0/Recombinant Proteins; 110-44-1/Sorbic Acid; 138-59-0/Shikimic Acid; 27655-56-7/3-dehydroshikimate; 3KD92ZL2KH/muconic acid; 7440-44-0/Carbon; 99-50-3/protocatechuic acid; LF3AJ089DQ/catechol

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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