ID   CHIQ_SALTY              Reviewed;         110 AA.
AC   Q8ZQX4;
DT   13-JUN-2012, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2002, sequence version 1.
DT   03-AUG-2022, entry version 72.
DE   RecName: Full=Uncharacterized lipoprotein ChiQ;
DE   Flags: Precursor;
GN   Name=chiQ; OrderedLocusNames=STM0688;
OS   Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Salmonella.
OX   NCBI_TaxID=99287;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=LT2 / SGSC1412 / ATCC 700720;
RX   PubMed=11677609; DOI=10.1038/35101614;
RA   McClelland M., Sanderson K.E., Spieth J., Clifton S.W., Latreille P.,
RA   Courtney L., Porwollik S., Ali J., Dante M., Du F., Hou S., Layman D.,
RA   Leonard S., Nguyen C., Scott K., Holmes A., Grewal N., Mulvaney E.,
RA   Ryan E., Sun H., Florea L., Miller W., Stoneking T., Nhan M., Waterston R.,
RA   Wilson R.K.;
RT   "Complete genome sequence of Salmonella enterica serovar Typhimurium LT2.";
RL   Nature 413:852-856(2001).
RN   [2]
RP   INDUCTION, AND GENE NAME.
RC   STRAIN=LT2 / MA3409;
RX   PubMed=19638370; DOI=10.1101/gad.541609;
RA   Figueroa-Bossi N., Valentini M., Malleret L., Fiorini F., Bossi L.;
RT   "Caught at its own game: regulatory small RNA inactivated by an inducible
RT   transcript mimicking its target.";
RL   Genes Dev. 23:2004-2015(2009).
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000255|PROSITE-
CC       ProRule:PRU00303}; Lipid-anchor {ECO:0000255|PROSITE-ProRule:PRU00303}.
CC   -!- INDUCTION: In the absence of chitobiose, expression of chiPQ is
CC       silenced by the ChiX small regulatory RNA (sRNA), which sequesters the
CC       ribosome binding site of the chiPQ mRNA by an antisense mechanism. In
CC       the presence of chitosugars, the chbBCARFG chitobiose operon is induced
CC       and acts as an RNA trap to degrade the constitutively expressed ChiX,
CC       leading to the translation of chiPQ. Chitobiose and chitotriose also
CC       induce chiP mRNA synthesis. {ECO:0000269|PubMed:19638370}.
CC   -!- MISCELLANEOUS: ChiQ appears dispensable for growth on either chitobiose
CC       or chitotriose. {ECO:0000305|PubMed:19638370}.
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DR   EMBL; AE006468; AAL19632.1; -; Genomic_DNA.
DR   RefSeq; NP_459673.1; NC_003197.2.
DR   RefSeq; WP_000722261.1; NC_003197.2.
DR   AlphaFoldDB; Q8ZQX4; -.
DR   STRING; 99287.STM0688; -.
DR   PaxDb; Q8ZQX4; -.
DR   PRIDE; Q8ZQX4; -.
DR   EnsemblBacteria; AAL19632; AAL19632; STM0688.
DR   GeneID; 1252208; -.
DR   KEGG; stm:STM0688; -.
DR   PATRIC; fig|99287.12.peg.719; -.
DR   HOGENOM; CLU_2192888_0_0_6; -.
DR   OMA; QFAEQET; -.
DR   PhylomeDB; Q8ZQX4; -.
DR   BioCyc; SENT99287:STM0688-MON; -.
DR   Proteomes; UP000001014; Chromosome.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   InterPro; IPR025727; YbfN-like.
DR   Pfam; PF13982; YbfN; 1.
DR   PROSITE; PS51257; PROKAR_LIPOPROTEIN; 1.
PE   2: Evidence at transcript level;
KW   Cell membrane; Lipoprotein; Membrane; Palmitate; Reference proteome;
KW   Signal.
FT   SIGNAL          1..16
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00303"
FT   CHAIN           17..110
FT                   /note="Uncharacterized lipoprotein ChiQ"
FT                   /id="PRO_0000417587"
FT   LIPID           17
FT                   /note="N-palmitoyl cysteine"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00303"
FT   LIPID           17
FT                   /note="S-diacylglycerol cysteine"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00303"
SQ   SEQUENCE   110 AA;  12237 MW;  CAE32EE6642D2323 CRC64;
     MKKILLIASM TAGLTACASS PAPEEDSRLK EAYSACINTA QGSPEKIEAC QSVLNVLKKE
     RRHQQFANEE SVRVLDYQQC IQATRTGNDQ AVKADCDKVW QEIRSHNNVQ