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. 1997 Apr 29;94(9):4806–4810. doi: 10.1073/pnas.94.9.4806

Figure 4.

Figure 4

Alignment of amino acids of the outer pore region C terminal to the GXG sequence from K+ channels of plants, yeast, bacteria, and animals. We cloned KAT- and AKT-related K+ channels (16, 17) (marked by an asterisk) from Solanum tuberosum epidermal fragments (SKT1), Zea mays coleoptiles (ZmCKC1 and -2), Vicia faba developing leafs (VfLKC), veins of Plantago major (PmVKC1 and -2), pollen of Secale cereale (ScPKC1 and -2), and Hordium vulgare epidermis (HvEKC). Note the conservation of a histidine (H271) close to an asparagine (N274) in plant K+ channels only. The GenBank accession numbers of the aligned channel sequences are as follows: KST1 (X79779X79779), KAT1 (M86990M86990), KAT2 (U25694U25694), AKT1 (X62907X62907), AKT2 and AKT3 appear to be identical (U40154U40154 and U44745U44745), SKT1 (X86021X86021), ZmCKC2 (Y07632Y07632), VfLKC1 (Y09749Y09749), ZmCKC1 (Y09747Y09747), PmVKC1 (Y09750Y09750), PmVKC2 (Y09751Y09751), ScPKC1 (Y09752Y09752), ScPKC2 (Y09753Y09753), HvEKC1 (Y09748Y09748), TOK1 (U28005U28005), Kch (L12044L12044), SKC1 (Z37969Z37969), Shaker (M17211M17211), Kv1.3 (M30312M30312), EAG (M61157M61157), HERG (U04270U04270), IRK1 (X73052X73052), cGMP (X51604X51604).