the biosyntheticprecursor of KA, but the absolute configuration of 4 has not been previously determined. Herein, we determined the absolute configuration of 4 as 2( S) using advanced Marfey's method. Compound 5 is similar to N-geranyl-3( R)-hydroxy-l-glutamic acid (8), which was previously identified in a domoic acid (DA)-containing red alga. Compounds 5 and 8 are predicted to be biosynthetic byproducts
[EN] SCALABLE BIOSYNTHESIS OF THE SEAWEED NEUROCHEMICAL KAINIC ACID<br/>[FR] BIOSYNTHÈSE ÉVOLUTIVE DE L'ACIDE NEUROCHIMIQUE KAÏNIQUE D'ALGUE
申请人:UNIV CALIFORNIA
公开号:WO2020117792A2
公开(公告)日:2020-06-11
Provided herein are compounds of Formulas (la), (lb), (II) to (VIII), and salts thereof, and methods of making the same. Also provided herein are recombinant proteins useful in the production of compounds disclosed herein, polynucleotides encoding the same, and cells comprising the same.
Algal neurotoxin biosynthesis repurposes the terpene cyclase structural fold into an
<i>N</i>
-prenyltransferase
作者:Jonathan R. Chekan、Shaun M. K. McKinnie、Joseph P. Noel、Bradley S. Moore
DOI:10.1073/pnas.2001325117
日期:2020.6.9
prenyltransferases from marine algae that repurposes the terpene cyclase structural fold for the N-prenylation of glutamic acid during the biosynthesis of the potent neurochemicals domoic acid and kainicacid. We solved the X-ray crystal structure of the prenyltransferase found in domoic acidbiosynthesis, DabA, and show distinct active site binding modifications that remodel the canonical magnesium (Mg2+)-binding
Scalable Biosynthesis of the Seaweed Neurochemical, Kainic Acid
作者:Jonathan R. Chekan、Shaun M. K. McKinnie、Malia L. Moore、Shane G. Poplawski、Todd P. Michael、Bradley S. Moore
DOI:10.1002/anie.201902910
日期:2019.6.17
biosynthetic pathway to kainicacid from l‐glutamic acid and dimethylallyl pyrophosphate in red macroalgae and show that the biosynthetic genes are co‐clustered in genomes of Digenea simplex and Palmaria palmata. Moreover, we applied a key biosynthetic α‐ketoglutarate‐dependent dioxygenase enzyme in a biotransformation methodology to efficiently construct kainicacid on the gram scale. This study establishes