ID   HFQ_CERS5               Reviewed;          77 AA.
AC   A4WSM3;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   29-MAY-2007, sequence version 1.
DT   03-AUG-2022, entry version 79.
DE   RecName: Full=RNA-binding protein Hfq {ECO:0000255|HAMAP-Rule:MF_00436};
GN   Name=hfq {ECO:0000255|HAMAP-Rule:MF_00436};
GN   OrderedLocusNames=Rsph17025_1493;
OS   Cereibacter sphaeroides (strain ATCC 17025 / ATH 2.4.3) (Rhodobacter
OS   sphaeroides).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rhodobacterales;
OC   Rhodobacteraceae; Cereibacter.
OX   NCBI_TaxID=349102;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 17025 / ATH 2.4.3;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S.,
RA   Chertkov O., Brettin T., Bruce D., Han C., Schmutz J., Larimer F., Land M.,
RA   Hauser L., Kyrpides N., Kim E., Richardson P., Mackenzie C., Choudhary M.,
RA   Donohue T.J., Kaplan S.;
RT   "Complete sequence of chromosome of Rhodobacter sphaeroides ATCC 17025.";
RL   Submitted (APR-2007) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: RNA chaperone that binds small regulatory RNA (sRNAs) and
CC       mRNAs to facilitate mRNA translational regulation in response to
CC       envelope stress, environmental stress and changes in metabolite
CC       concentrations. Also binds with high specificity to tRNAs.
CC       {ECO:0000255|HAMAP-Rule:MF_00436}.
CC   -!- SUBUNIT: Homohexamer. {ECO:0000255|HAMAP-Rule:MF_00436}.
CC   -!- SIMILARITY: Belongs to the Hfq family. {ECO:0000255|HAMAP-
CC       Rule:MF_00436}.
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DR   EMBL; CP000661; ABP70387.1; -; Genomic_DNA.
DR   AlphaFoldDB; A4WSM3; -.
DR   SMR; A4WSM3; -.
DR   STRING; 349102.Rsph17025_1493; -.
DR   EnsemblBacteria; ABP70387; ABP70387; Rsph17025_1493.
DR   KEGG; rsq:Rsph17025_1493; -.
DR   eggNOG; COG1923; Bacteria.
DR   HOGENOM; CLU_113688_0_0_5; -.
DR   OMA; QQMVYKH; -.
DR   OrthoDB; 1989988at2; -.
DR   BioCyc; RSPH349102:G1G8M-1535-MON; -.
DR   GO; GO:0003723; F:RNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0006355; P:regulation of transcription, DNA-templated; IEA:InterPro.
DR   CDD; cd01716; Hfq; 1.
DR   HAMAP; MF_00436; Hfq; 1.
DR   InterPro; IPR005001; Hfq.
DR   InterPro; IPR010920; LSM_dom_sf.
DR   PANTHER; PTHR34772; PTHR34772; 1.
DR   Pfam; PF17209; Hfq; 1.
DR   SUPFAM; SSF50182; SSF50182; 1.
DR   TIGRFAMs; TIGR02383; Hfq; 1.
PE   3: Inferred from homology;
KW   RNA-binding; Stress response.
FT   CHAIN           1..77
FT                   /note="RNA-binding protein Hfq"
FT                   /id="PRO_1000080685"
SQ   SEQUENCE   77 AA;  8715 MW;  EA7384550D610A4C CRC64;
     MAADKQNLQD AFLNHVRKAK VPVTIFLING VKLQGVITWF DNFCVLLRRD GQSQLVYKHA
     ISTIMPGQPI NLYEGDD