Figure 1.

Methyl-accepting activities of Tar and TarΔpp. Membranes providing ≈5 μM Tar or TarΔpp were incubated for 1 min at room temperature with 50 μM [methyl-³H]AdoMet, 1 mM aspartate (where indicated), and a cell extract providing ≈1 μM CheR. Samples containing ≈50 pmol receptor were analyzed for radiolabeled methyl groups. The data are averages of experiments using two independent membrane preparations. Error bars show SEs.