>sp|Q9UXU0|TRKA_PYRAB Trk system potassium uptake protein TrkA homolog OS=Pyrococcus abyssi GN=trkA MYIIIMGAGRIGTLVARMLESEGHDVAIIEMNRERAREISEYVSGLVIEGDATDQKVLEN ANIKNADAFAALTGRDDANILACILAKHLNPKIMTILRITDPGKKKIFEEVKELKRYFDI VVSPEDIAANYIFRTLVTPGFDRVLLPREGAEIIQFQVNEDCEVAGKPIKELNLPKDSLI IAVYDEKGNLVIPSGDTVIPKKGQVIIFAKNSALQDVKKIMEKKREE