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The Saccharomyces Genome Database-a history of ideas and accomplishments, 1994-2026.

The Saccharomyces Genome Database (SGD) is one of the longest-running and most consequential biological databases in the world. Founded in the early 1990s at Stanford University under the visionary leadership of David Botstein and developed under the long-term technical direction of J. Michael Cherry, SGD has served for more than three decades not only as the authoritative knowledge center for the budding yeast Saccharomyces cerevisiae, but also as the source for much of the fundamentals of eukaryotic biology. This history traces the arc of a remarkable intellectual and scientific project: beginning with the challenge of building the very first integrated eukaryotic genome database and evolving across 30 years into a global knowledge hub for genetics, functional genomics, and human disease research. The history is organized chronologically, with each section highlighting the central ideas, technical developments, and concrete accomplishments of that period.

Databases, Genetic

Pulcherriminic acid biosynthesis and transport: insights from a heterologous system in Saccharomyces cerevisiae.

Pulcherriminic acid is an iron chelator produced by some Kluyveromyces and Metschnikowia yeasts. Its biosynthesis is encoded by the four-gene PUL cluster, where PUL1 and PUL2 are the biosynthetic enzymes, PUL3 mediates the uptake of iron-bound pulcherrimin, and PUL4 is a putative regulator. Pulcherriminic acid holds antifungal potential, as the growth of organisms unable to uptake pulcherrimin is inhibited by deficit of essential iron. Thus, a heterologous production system to further characterize and optimize its biosynthesis would be valuable. Using our in-house yeast collection and genomes available in databases, we cloned PUL1 and PUL2 genes from Kluyveromyces lactis and one of our wild Metschnikowia isolates and built an effective production system in Saccharomyces cerevisiae able to inhibit pathogenic growth. In this context, the K. lactis genes yielded faster pulcherriminic acid production than those from the Metschnikowia isolate and a combinatorial approach showed PUL1 to be the production bottleneck. We further showed that Pul3 is an importer of pulcherrimin, but also mediates the export of pulcherriminic acid and that the growth of pathogens such as Candidozyma auris and organisms encoding PUL3 in their genome, previously called "cheaters," is inhibited by pulcherriminic acid, highlighting its potential as an antimicrobial agent.

Saccharomyces cerevisiae