My guess is Old Yellow Enzyme.
"I'd rather be fission."
> In a multicopy suppression analysis I found a plasmid that
> turns all yeast strains yellow. This library plasmid
> contains a CHrII fragment containing STU1 and YBC034c and
> more, does anybody have clue what the transformant is
> accumulating or making ?
My recollection is that some leu mutants will make colonies yellow, so
maybe it has something to do with leu metabolism.
forte at ohsu.edu or
forte at mtwo.com