>sp|O27333|TRKA_METTH Trk system potassium uptake protein TrkA homolog OS=Methanothermobacter thermautotrophicus GN=trkA MYVVIMGGGRVGLTLANLLISDGHDVTLIENEETLCANAAVELDALVICGNGTDIKTLEE ANISNADVFVAATGNDEANLLSCILVREYSIPKIIARVSNPDHEEAFKKVGIDHVISPER TAAGYLEKLITRPKVADLIVLGHGDAEILDMEIRSSKVVGKRVGDVSPTDKYIIVAIYNN GDLIIPQPDMVLERGTKVSVLVKTDAVKEATRRFTG