ID   HOKF_SHIFL              Reviewed;          50 AA.
AC   Q7UDG0;
DT   06-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2003, sequence version 1.
DT   25-MAY-2022, entry version 85.
DE   RecName: Full=Putative protein HokF;
GN   Name=hokF; OrderedLocusNames=SF0494.1, S0499;
OS   Shigella flexneri.
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Shigella.
OX   NCBI_TaxID=623;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=301 / Serotype 2a;
RX   PubMed=12384590; DOI=10.1093/nar/gkf566;
RA   Jin Q., Yuan Z., Xu J., Wang Y., Shen Y., Lu W., Wang J., Liu H., Yang J.,
RA   Yang F., Zhang X., Zhang J., Yang G., Wu H., Qu D., Dong J., Sun L.,
RA   Xue Y., Zhao A., Gao Y., Zhu J., Kan B., Ding K., Chen S., Cheng H.,
RA   Yao Z., He B., Chen R., Ma D., Qiang B., Wen Y., Hou Y., Yu J.;
RT   "Genome sequence of Shigella flexneri 2a: insights into pathogenicity
RT   through comparison with genomes of Escherichia coli K12 and O157.";
RL   Nucleic Acids Res. 30:4432-4441(2002).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700930 / 2457T / Serotype 2a;
RX   PubMed=12704152; DOI=10.1128/iai.71.5.2775-2786.2003;
RA   Wei J., Goldberg M.B., Burland V., Venkatesan M.M., Deng W., Fournier G.,
RA   Mayhew G.F., Plunkett G. III, Rose D.J., Darling A., Mau B., Perna N.T.,
RA   Payne S.M., Runyen-Janecky L.J., Zhou S., Schwartz D.C., Blattner F.R.;
RT   "Complete genome sequence and comparative genomics of Shigella flexneri
RT   serotype 2a strain 2457T.";
RL   Infect. Immun. 71:2775-2786(2003).
CC   -!- FUNCTION: Toxic component of a type I toxin-antitoxin (TA) system (By
CC       similarity). When overexpressed kills cells within minutes; causes
CC       collapse of the transmembrane potential and arrest of respiration (By
CC       similarity). Its toxic effect is probably neutralized by an antisense
CC       antitoxin Sok RNA (By similarity). {ECO:0000250|UniProtKB:P0ACG4}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane
CC       {ECO:0000250|UniProtKB:P0ACG4}; Single-pass membrane protein
CC       {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the Hok/Gef family. {ECO:0000305}.
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DR   EMBL; AE005674; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR   EMBL; AE014073; AAP16015.1; -; Genomic_DNA.
DR   RefSeq; WP_000956463.1; NZ_WPGW01000132.1.
DR   AlphaFoldDB; Q7UDG0; -.
DR   SMR; Q7UDG0; -.
DR   EnsemblBacteria; AAP16015; AAP16015; S0499.
DR   KEGG; sfx:S0499; -.
DR   PATRIC; fig|623.156.peg.3658; -.
DR   HOGENOM; CLU_177638_3_2_6; -.
DR   OrthoDB; 2055511at2; -.
DR   Proteomes; UP000001006; Chromosome.
DR   Proteomes; UP000002673; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   InterPro; IPR000021; Hok/gef_toxin.
DR   InterPro; IPR018084; Hok/gef_toxin_CS.
DR   Pfam; PF01848; HOK_GEF; 1.
DR   PRINTS; PR00281; HOKGEFTOXIC.
DR   PROSITE; PS00556; HOK_GEF; 1.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Membrane; Reference proteome;
KW   Toxin-antitoxin system; Transmembrane; Transmembrane helix.
FT   CHAIN           1..50
FT                   /note="Putative protein HokF"
FT                   /id="PRO_0000199040"
FT   TRANSMEM        5..25
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   50 AA;  5592 MW;  8AC691524BEF6835 CRC64;
     MLTKYALVAV IVLCLTVLGF TLLAGDSLCE FTVKERNIEF RAVLAYEPKK