Enantioselective Total Synthesis of the Morphogen (-)-Thallusin and Mediated Uptake of Fe(III) into the Green Seaweed Ulva.

A fully enantioselective, catalytic synthesis of the algal morphogen (-)-thallusin using polyene cyclization chemistry is reported. The synthesis features dedicated precursor design, introduction of a TMS-substituted arene as a regioselective terminator, very high enantiomer excess (ee) on gram scale, and productive scaffold functionalization. Furthermore, an ee determination methodology of thallusin samples was developed, and the ee of biosynthesized thallusin was determined.

Genome Sequence of sp. Strain MS1, a Metallophore-Producing, Algal Growth-Promoting Marine Bacterium Isolated from the Green Seaweed Ulva mutabilis (Chlorophyta).

We report the draft genome sequence of the marine gammaproteobacterium sp. strain MS1, isolated from the green seaweed Ulva mutabilis (Chlorophyta), which releases metallophores fostering macroalga-bacterium interactions. The 4.

Frankobactin Metallophores Produced by Nitrogen-Fixing Actinobacteria Function in Toxic Metal Sequestration.

A series of new metallophores, referred to as frankobactins, were extracted from cultures of the symbiotic and nitrogen-fixing actinobacterium sp. CH37. Structure elucidation revealed a 2-hydroxyphenyl-substituted oxazoline core and a chain composed of five proteinogenic and nonproteinogenic amino acids, suggesting nonribosomal peptide synthesis as the biosynthetic origin.