Abstract
Biological activities of both peptidyl and isoprenyl constituents of yeast sex hormones (lipopeptides), rhodotorucine A and farnesyl tremerogen A -10, were examined. The chemically synthesized simple peptides (peptidyl constituents) and farnesyl cystein (isoprenyl one) did not exhibit any biological activities, such as hormonal and hormone-inhibitory (or -accelerative) activities. The mixture of both constituents also had no activity. Then, it is assumed that the heterobasidiomycetous yeasts ( Rhodosporidium toruloides and Tremella mesenterica ) recognize the total structure of lipopeptidyl molecule for the biological response, sexual differentiation, and the term “Pattern Recognition” is proposed for the mode of this recognition.
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