ID   SPHX_SYNE7              Reviewed;         337 AA.
AC   P39665; Q31KE4;
DT   01-FEB-1995, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1995, sequence version 1.
DT   03-AUG-2022, entry version 108.
DE   RecName: Full=Protein SphX;
DE   Flags: Precursor;
GN   Name=sphX; OrderedLocusNames=Synpcc7942_2445;
OS   Synechococcus elongatus (strain PCC 7942 / FACHB-805) (Anacystis nidulans
OS   R2).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus.
OX   NCBI_TaxID=1140;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND PROTEIN SEQUENCE OF 100-119; 181-198
RP   AND 291-304.
RX   PubMed=7741855; DOI=10.1111/j.1365-2958.1994.tb00399.x;
RA   Aiba H., Mizuno T.;
RT   "A novel gene whose expression is regulated by the response-regulator,
RT   SphR, in response to phosphate limitation in Synechococcus species
RT   PCC7942.";
RL   Mol. Microbiol. 13:25-34(1994).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 7942 / FACHB-805;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA   Hammon N., Israni S., Pitluck S., Schmutz J., Larimer F., Land M.,
RA   Kyrpides N., Lykidis A., Richardson P.;
RT   "Complete sequence of chromosome 1 of Synechococcus elongatus PCC 7942.";
RL   Submitted (AUG-2005) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: May be involved in the system for phosphate transport across
CC       the cytoplasmic membrane.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane. Note=Found in the
CC       cytoplasmic membrane in a form that is closely associated with the cell
CC       wall.
CC   -!- PTM: The N-terminus is blocked.
CC   -!- SIMILARITY: Belongs to the PstS family. {ECO:0000305}.
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DR   EMBL; D26161; BAA05147.1; -; Genomic_DNA.
DR   EMBL; CP000100; ABB58475.1; -; Genomic_DNA.
DR   RefSeq; WP_011243971.1; NC_007604.1.
DR   AlphaFoldDB; P39665; -.
DR   SMR; P39665; -.
DR   STRING; 1140.Synpcc7942_2445; -.
DR   PRIDE; P39665; -.
DR   EnsemblBacteria; ABB58475; ABB58475; Synpcc7942_2445.
DR   KEGG; syf:Synpcc7942_2445; -.
DR   eggNOG; COG0226; Bacteria.
DR   HOGENOM; CLU_026228_1_0_3; -.
DR   OMA; FDACAAK; -.
DR   OrthoDB; 1222928at2; -.
DR   BioCyc; SYNEL:SYNPCC7942_2445-MON; -.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0042301; F:phosphate ion binding; IEA:InterPro.
DR   InterPro; IPR024370; PBP_domain.
DR   InterPro; IPR011862; Phos-bd.
DR   Pfam; PF12849; PBP_like_2; 1.
DR   TIGRFAMs; TIGR02136; ptsS_2; 1.
PE   1: Evidence at protein level;
KW   Cell inner membrane; Cell membrane; Direct protein sequencing; Membrane;
KW   Signal; Transport.
FT   SIGNAL          1..30
FT                   /evidence="ECO:0000255"
FT   CHAIN           31..337
FT                   /note="Protein SphX"
FT                   /id="PRO_0000022395"
SQ   SEQUENCE   337 AA;  36374 MW;  E3EE97C7305DE36C CRC64;
     MTTLKPALRR AAVLLPIAAV ASSLFPIQEA SAQRALVTAD GSSTVFPISE AVAEEFQKRN
     KNINVTVGVS GTGGGFKRFC NGEIDIANAS RPIKKEEVEA CRKKGIRYIE LPVAFDALTV
     VVNKSNPVNS ITTAELAKIF GRDAEKKTTN WRQVKSSFPN LPLRVYAPGT DSGTYDYFNE
     AILNKKGTRG DLTASEDDNI LVQGVSRDRG GIGFFGFSYY EENKGKLKAL AVVNSNGKAV
     MPSVQNVLNG TYDPLARPVF IYVSEQAAKK ANVRSFVNFY LQNAGKLSRE VGFVPLPAKA
     YTAATQRFRS NKTGTVFAGK SLVGGSIEDL LKAEGIN