>sp|O57719|TRKA_PYRHO Trk system potassium uptake protein TrkA homolog OS=Pyrococcus horikoshii (strain ATCC 700860 / DSM 12428 / JCM 9974 / NBRC 100139 / OT-3) OX=70601 GN=trkA PE=3 SV=1 MYIVIMGAGRIGTLVARMLESEGHDVAIIEMNRERAREISEYISGLVIEGDATDQKVLEN ANIKNANAFAALTGKDDANILACILAKHLNPNIMTILRITDPGKKKIFEDVKELKTYFDI VVSPEDIAANYIFRTLVTPGFNRVLLPREGAEIIQFQIDEDCEVAGKPVKELNLPKDSLI IAVYDEKGNLTIPSGDTIIPKKGQVIIFAKNSALQEVKKIMEKKKKEQ