ID   CRL_SHIFL               Reviewed;         133 AA.
AC   Q83SI1; Q7C311;
DT   12-DEC-2006, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 3.
DT   25-MAY-2022, entry version 105.
DE   RecName: Full=Sigma factor-binding protein Crl {ECO:0000255|HAMAP-Rule:MF_01178};
GN   Name=crl {ECO:0000255|HAMAP-Rule:MF_01178};
GN   OrderedLocusNames=SF0288, S0309;
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: Binds to the sigma-S subunit of RNA polymerase, activating
CC       expression of sigma-S-regulated genes. Stimulates RNA polymerase
CC       holoenzyme formation and may bind to several other sigma factors, such
CC       as sigma-70 and sigma-32. {ECO:0000255|HAMAP-Rule:MF_01178}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01178}.
CC   -!- SIMILARITY: Belongs to the Crl family. {ECO:0000255|HAMAP-
CC       Rule:MF_01178}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; AE005674; AAN41947.1; -; Genomic_DNA.
DR   EMBL; AE014073; AAP15834.1; -; Genomic_DNA.
DR   RefSeq; NP_706240.1; NC_004337.2.
DR   RefSeq; WP_000174678.1; NZ_WPGW01000070.1.
DR   AlphaFoldDB; Q83SI1; -.
DR   SMR; Q83SI1; -.
DR   STRING; 198214.SF0288; -.
DR   EnsemblBacteria; AAN41947; AAN41947; SF0288.
DR   EnsemblBacteria; AAP15834; AAP15834; S0309.
DR   GeneID; 1024314; -.
DR   KEGG; sfl:SF0288; -.
DR   KEGG; sft:NCTC1_00303; -.
DR   KEGG; sfx:S0309; -.
DR   PATRIC; fig|198214.7.peg.329; -.
DR   HOGENOM; CLU_136773_0_0_6; -.
DR   OrthoDB; 1914214at2; -.
DR   Proteomes; UP000001006; Chromosome.
DR   Proteomes; UP000002673; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0045893; P:positive regulation of transcription, DNA-templated; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.30.310.230; -; 1.
DR   HAMAP; MF_01178; Crl; 1.
DR   InterPro; IPR009986; Tscrpt_reg_Crl.
DR   InterPro; IPR038208; Tscrpt_reg_Crl_sf.
DR   Pfam; PF07417; Crl; 1.
PE   3: Inferred from homology;
KW   Activator; Coiled coil; Cytoplasm; Reference proteome; Transcription;
KW   Transcription regulation.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000250"
FT   CHAIN           2..133
FT                   /note="Sigma factor-binding protein Crl"
FT                   /id="PRO_0000268907"
FT   REGION          99..122
FT                   /note="Essential for activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01178"
FT   COILED          90..116
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01178"
SQ   SEQUENCE   133 AA;  15655 MW;  E706CC4BE54EE67C CRC64;
     MTLPSGHPKS RLIKKFTALG PYIREGKCED NRFFFDCLAV CVNVKPAPEV REFWGWWMEL
     EAQESRFTYS YQFGLFDKAG DWKSVPVKDT EVVERLEHTL REFHEKLREL LTTLNLKLEP
     ANDFRDEPVK LTA