ID   TRKA_MYCTO              Reviewed;         220 AA.
AC   P9WFZ2; L0TAC9; O07194;
DT   16-APR-2014, integrated into UniProtKB/Swiss-Prot.
DT   16-APR-2014, sequence version 1.
DT   03-AUG-2022, entry version 37.
DE   RecName: Full=Trk system potassium uptake protein TrkA;
DE            Short=K(+)-uptake protein TrkA;
GN   Name=trkA; Synonyms=ceoC; OrderedLocusNames=MT2766;
OS   Mycobacterium tuberculosis (strain CDC 1551 / Oshkosh).
OC   Bacteria; Actinobacteria; Corynebacteriales; Mycobacteriaceae;
OC   Mycobacterium; Mycobacterium tuberculosis complex.
OX   NCBI_TaxID=83331;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CDC 1551 / Oshkosh;
RX   PubMed=12218036; DOI=10.1128/jb.184.19.5479-5490.2002;
RA   Fleischmann R.D., Alland D., Eisen J.A., Carpenter L., White O.,
RA   Peterson J.D., DeBoy R.T., Dodson R.J., Gwinn M.L., Haft D.H., Hickey E.K.,
RA   Kolonay J.F., Nelson W.C., Umayam L.A., Ermolaeva M.D., Salzberg S.L.,
RA   Delcher A., Utterback T.R., Weidman J.F., Khouri H.M., Gill J., Mikula A.,
RA   Bishai W., Jacobs W.R. Jr., Venter J.C., Fraser C.M.;
RT   "Whole-genome comparison of Mycobacterium tuberculosis clinical and
RT   laboratory strains.";
RL   J. Bacteriol. 184:5479-5490(2002).
CC   -!- FUNCTION: Part of a potassium transport system. {ECO:0000250}.
CC   -!- DOMAIN: The RCK N-terminal domain binds NAD and possibly other
CC       effectors. This is expected to cause a conformation change that
CC       regulates potassium transport (By similarity). {ECO:0000250}.
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DR   EMBL; AE000516; AAK47081.1; -; Genomic_DNA.
DR   PIR; G70529; G70529.
DR   RefSeq; WP_003899435.1; NZ_KK341227.1.
DR   AlphaFoldDB; P9WFZ2; -.
DR   SMR; P9WFZ2; -.
DR   EnsemblBacteria; AAK47081; AAK47081; MT2766.
DR   KEGG; mtc:MT2766; -.
DR   PATRIC; fig|83331.31.peg.2979; -.
DR   HOGENOM; CLU_046525_2_0_11; -.
DR   Proteomes; UP000001020; Chromosome.
DR   GO; GO:0005886; C:plasma membrane; IEA:InterPro.
DR   GO; GO:0015079; F:potassium ion transmembrane transporter activity; IEA:InterPro.
DR   Gene3D; 3.30.70.1450; -; 1.
DR   InterPro; IPR006036; K_uptake_TrkA.
DR   InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR   InterPro; IPR006037; RCK_C.
DR   InterPro; IPR036721; RCK_C_sf.
DR   InterPro; IPR003148; RCK_N.
DR   Pfam; PF02080; TrkA_C; 1.
DR   Pfam; PF02254; TrkA_N; 1.
DR   PRINTS; PR00335; KUPTAKETRKA.
DR   SUPFAM; SSF116726; SSF116726; 1.
DR   SUPFAM; SSF51735; SSF51735; 1.
DR   PROSITE; PS51202; RCK_C; 1.
DR   PROSITE; PS51201; RCK_N; 1.
PE   3: Inferred from homology;
KW   Ion transport; NAD; Potassium; Potassium transport; Transport.
FT   CHAIN           1..220
FT                   /note="Trk system potassium uptake protein TrkA"
FT                   /id="PRO_0000428452"
FT   DOMAIN          2..125
FT                   /note="RCK N-terminal"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00543"
FT   DOMAIN          137..218
FT                   /note="RCK C-terminal"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00544"
FT   BINDING         7..11
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /ligand_note="ligand shared between dimeric partners"
FT                   /note="in other chain"
FT                   /evidence="ECO:0000250"
FT   BINDING         30
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /ligand_note="ligand shared between dimeric partners"
FT                   /note="in other chain"
FT                   /evidence="ECO:0000250"
FT   BINDING         50
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /ligand_note="ligand shared between dimeric partners"
FT                   /note="in other chain"
FT                   /evidence="ECO:0000250"
FT   BINDING         72..73
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /ligand_note="ligand shared between dimeric partners"
FT                   /note="in other chain"
FT                   /evidence="ECO:0000250"
FT   BINDING         97
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /ligand_note="ligand shared between dimeric partners"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   220 AA;  23947 MW;  0BD0D67845CE2685 CRC64;
     MKVAVAGAGA VGRSVTRELV ENGHDITLIE RNPDHLDAAA IPEAHWRLGD ACELSLLESI
     HLEEFDVVVA ATGDDKVNVV LSLLAKTEFA VPRVVARVND PRNEWLFNDA WGVDVAVSTP
     RMLASLIEEA VTIGDLVRLM EFRTGQANLV EITLPDNTPW GGKPVRKLQL PRDAALVTIL
     RGPRVIVPEA DEPLEGGDEL LFVAVTEAEE ELSRLLLPSM