Potassium channel tetramerization domain containing 20 MNVHRGSDSD RLLRQEASCL VDDTLAVAQE KEANSLASSG PHNLTYPLGP RNEGCLDQEE STTSLGPMRR ESMRLLKASV QLYFAQCWII TKPVSSIVLM ASLSQILEIL VIISALILTS TLSDVKI