Kv2.1 is not likely N-glycosylated. Immunoblots of Kv2.1 and Kv1.4 ± N-glycosylation. Lysates isolated from transfected Pro5 cells. A, N-glycosylation site mutant and PNGase-treated lysates. Kv2.1 (left) and Kv1.4 (right). Lane 1, N-glycosylation site mutant; lane 2, PNGase-F treated; lane 3, untreated control. B, N-glycanase-treated. Lane 1, N-glycanase-treated; lane 2, untreated control. Kv2.1, 1.5–2.0 μg of protein loaded/lane. Kv1.4, 10 μg of protein loaded/lane.