ID   NUSB_NITSB              Reviewed;         139 AA.
AC   A6Q4Q9;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   21-AUG-2007, sequence version 1.
DT   25-MAY-2022, entry version 76.
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=NIS_1360;
OS   Nitratiruptor sp. (strain SB155-2).
OC   Bacteria; Proteobacteria; Epsilonproteobacteria; Nautiliales;
OC   Nitratiruptoraceae; Nitratiruptor; unclassified Nitratiruptor.
OX   NCBI_TaxID=387092;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SB155-2;
RX   PubMed=17615243; DOI=10.1073/pnas.0700687104;
RA   Nakagawa S., Takaki Y., Shimamura S., Reysenbach A.-L., Takai K.,
RA   Horikoshi K.;
RT   "Deep-sea vent epsilon-proteobacterial genomes provide insights into
RT   emergence of pathogens.";
RL   Proc. Natl. Acad. Sci. U.S.A. 104:12146-12150(2007).
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}.
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DR   EMBL; AP009178; BAF70468.1; -; Genomic_DNA.
DR   RefSeq; WP_012082731.1; NC_009662.1.
DR   AlphaFoldDB; A6Q4Q9; -.
DR   SMR; A6Q4Q9; -.
DR   STRING; 387092.NIS_1360; -.
DR   EnsemblBacteria; BAF70468; BAF70468; NIS_1360.
DR   KEGG; nis:NIS_1360; -.
DR   eggNOG; COG0781; Bacteria.
DR   HOGENOM; CLU_087843_3_3_7; -.
DR   OMA; DRMPVVD; -.
DR   OrthoDB; 1574817at2; -.
DR   Proteomes; UP000001118; 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..139
FT                   /note="Transcription antitermination protein NusB"
FT                   /id="PRO_1000023756"
SQ   SEQUENCE   139 AA;  15836 MW;  F322B1AC1D26C392 CRC64;
     MATRHQAREA VIGLLYAYDL GNPEIKKFAE DILEEKKIRN KQREFALALF KGTVEHLDTI
     DEMIKKHLES WDMERVGHIE RAILRLGVYE LFYTDLDPAI VINEAVELAK KLGTDQSPKF
     INGVLDAIAK EVKNGSQKA