Alpha-Factor - 100 mg

ALPHA FACTOR SIGNALING PEPTIDE Yeast mating signaling pathway The life cycle of Saccharomyces cerevisiae, also known as the brewer’s and the baker’s yeast, is characterized by both haploid and diploid phases. Indeed, yeasts are organized in two haploid types, known as a and α cells (MATa and MATα), that can either proliferate individually, using mitosis, or fuse together to form MATa/MATα diploids. α factor - WHWLQLKPGQPMY peptide - CAS: 59401-28-4. Haploid, diploid cells For two haploid cells to mate, mating factors are needed. These pheromones induce G-Protein Coupled Receptor‘s (GPCR) conformational changes, which allow G-protein migration in the plasma membrane. GPCRs are present on both a and α yeast cells and turn into Guanine nucleotide Exchange Factors (GEF) upon G-protein release. The receptor’s « new activity » leads to guanosine diphosphate (GDP) exchange by guanosine triphosphate (GTP) on the G-protein, which will recruit STE 5 to allow Fus3 protein phosphorylation