Methyl-accepting taxis protein necessary for the proper aggregation of cells to form fruiting bodies. Frz genes define a system of signal transduction analogous to the enterobacterial chemotaxis systems. Methylated. Saturated fatty acids capric acid and lauric acid stimulate methylation. Short-chain alcohols, such as isoamyl alcohol, and some other solvents cause demethylation. Belongs to the methyl-accepting chemotaxis (MCP) protein family.