ID   IMMK_ECOLX              Reviewed;          96 AA.
AC   Q47503; Q46784; Q47501;
DT   15-DEC-1998, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1996, sequence version 1.
DT   25-MAY-2022, entry version 69.
DE   RecName: Full=Colicin-K immunity protein;
GN   Name=cki; Synonyms=cfi;
OS   Escherichia coli.
OG   Plasmid ColK-K235.
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=562;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=ATCC 35324 / ECOR 5, and K49;
RX   PubMed=7592493; DOI=10.1128/jb.177.23.6973-6977.1995;
RA   Pilsl H., Braun V.;
RT   "Strong function-related homology between the pore-forming colicins K and
RT   5.";
RL   J. Bacteriol. 177:6973-6977(1995).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Izard J., Chartier M., Baty D.;
RL   Submitted (MAY-1995) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: This protein is able to protect a cell, which harbors the
CC       plasmid ColK encoding colicin K, against colicin K.
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000305}; Single-pass membrane
CC       protein {ECO:0000305}.
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DR   EMBL; X87834; CAA61100.1; -; Genomic_DNA.
DR   EMBL; X87835; CAA61103.1; -; Genomic_DNA.
DR   EMBL; U27452; AAB41289.1; -; Genomic_DNA.
DR   RefSeq; WP_011264161.1; NZ_WVVZ01000067.1.
DR   RefSeq; YP_214173.1; NC_006881.1.
DR   AlphaFoldDB; Q47503; -.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0030153; P:bacteriocin immunity; IEA:UniProtKB-KW.
DR   InterPro; IPR035265; Colicin-K_immunity.
DR   Pfam; PF17500; CKI; 1.
PE   4: Predicted;
KW   Bacteriocin immunity; Cell membrane; Membrane; Plasmid; Transmembrane;
KW   Transmembrane helix.
FT   CHAIN           1..96
FT                   /note="Colicin-K immunity protein"
FT                   /id="PRO_0000218692"
FT   TRANSMEM        73..93
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   96 AA;  11498 MW;  E82853239597A5CD CRC64;
     MHLKYYLHNL PESLIPWILI LIFNDNDNTP LLFIFISSIH VLLYPYSKLT ISRYIKENTK
     LKKEPWYLCK LSALFYLLMA IPVGLPSFIY YTLKRN