ID   NUSB_RICPR              Reviewed;         155 AA.
AC   Q9ZE01;
DT   30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT   31-JAN-2002, sequence version 2.
DT   25-MAY-2022, entry version 101.
DE   RecName: Full=Transcription antitermination protein NusB {ECO:0000255|HAMAP-Rule:MF_00073};
DE   AltName: Full=Antitermination factor NusB {ECO:0000255|HAMAP-Rule:MF_00073};
GN   Name=nusB {ECO:0000255|HAMAP-Rule:MF_00073}; OrderedLocusNames=RP162;
OS   Rickettsia prowazekii (strain Madrid E).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rickettsiales;
OC   Rickettsiaceae; Rickettsieae; Rickettsia; typhus group.
OX   NCBI_TaxID=272947;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Madrid E;
RX   PubMed=9823893; DOI=10.1038/24094;
RA   Andersson S.G.E., Zomorodipour A., Andersson J.O., Sicheritz-Ponten T.,
RA   Alsmark U.C.M., Podowski R.M., Naeslund A.K., Eriksson A.-S., Winkler H.H.,
RA   Kurland C.G.;
RT   "The genome sequence of Rickettsia prowazekii and the origin of
RT   mitochondria.";
RL   Nature 396:133-140(1998).
CC   -!- FUNCTION: Involved in transcription antitermination. Required for
CC       transcription of ribosomal RNA (rRNA) genes. Binds specifically to the
CC       boxA antiterminator sequence of the ribosomal RNA (rrn) operons.
CC       {ECO:0000255|HAMAP-Rule:MF_00073}.
CC   -!- SIMILARITY: Belongs to the NusB family. {ECO:0000255|HAMAP-
CC       Rule:MF_00073, ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=CAA14629.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; AJ235270; CAA14629.1; ALT_INIT; Genomic_DNA.
DR   PIR; F71726; F71726.
DR   RefSeq; NP_220552.1; NC_000963.1.
DR   RefSeq; WP_014411647.1; NC_000963.1.
DR   AlphaFoldDB; Q9ZE01; -.
DR   SMR; Q9ZE01; -.
DR   STRING; 272947.RP162; -.
DR   EnsemblBacteria; CAA14629; CAA14629; CAA14629.
DR   GeneID; 57569291; -.
DR   KEGG; rpr:RP162; -.
DR   PATRIC; fig|272947.5.peg.166; -.
DR   eggNOG; COG0781; Bacteria.
DR   HOGENOM; CLU_087843_4_3_5; -.
DR   Proteomes; UP000002480; Chromosome.
DR   GO; GO:0003723; F:RNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0006353; P:DNA-templated transcription, termination; IEA:UniProtKB-UniRule.
DR   GO; GO:0006355; P:regulation of transcription, DNA-templated; IEA:InterPro.
DR   GO; GO:0031564; P:transcription antitermination; IEA:UniProtKB-KW.
DR   Gene3D; 1.10.940.10; -; 1.
DR   HAMAP; MF_00073; NusB; 1.
DR   InterPro; IPR035926; NusB-like_sf.
DR   InterPro; IPR011605; NusB_fam.
DR   InterPro; IPR006027; NusB_RsmB_TIM44.
DR   PANTHER; PTHR11078; PTHR11078; 1.
DR   Pfam; PF01029; NusB; 1.
DR   SUPFAM; SSF48013; SSF48013; 1.
DR   TIGRFAMs; TIGR01951; nusB; 1.
PE   3: Inferred from homology;
KW   Reference proteome; RNA-binding; Transcription;
KW   Transcription antitermination; Transcription regulation.
FT   CHAIN           1..155
FT                   /note="Transcription antitermination protein NusB"
FT                   /id="PRO_0000176572"
SQ   SEQUENCE   155 AA;  17652 MW;  B69F86311680A401 CRC64;
     MSTNKINKKS IARIAAVQAL YQNILQNNYD MYDIMQNILA CYHSNNSIDL PKNFKISLSI
     SHFKMLVKSV FENINKLDEI IDNHLTNAKD SVHMPILLRA LLRVSICELL FCSTTPAKVV
     INEYTDIAND LLNEHEIGFV NSILDKIAQE NNKIS