ID   NUSB_PROA2              Reviewed;         168 AA.
AC   B4S517;
DT   24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT   23-SEP-2008, sequence version 1.
DT   25-MAY-2022, entry version 72.
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=Paes_0459;
OS   Prosthecochloris aestuarii (strain DSM 271 / SK 413).
OC   Bacteria; Chlorobi; Chlorobia; Chlorobiales; Chlorobiaceae;
OC   Prosthecochloris.
OX   NCBI_TaxID=290512;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 271 / SK 413;
RG   US DOE Joint Genome Institute;
RA   Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA   Bruce D., Goodwin L., Pitluck S., Schmutz J., Larimer F., Land M.,
RA   Hauser L., Kyrpides N., Anderson I., Liu Z., Li T., Zhao F., Overmann J.,
RA   Bryant D.A., Richardson P.;
RT   "Complete sequence of chromosome of Prosthecochloris aestuarii DSM 271.";
RL   Submitted (JUN-2008) to the EMBL/GenBank/DDBJ databases.
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; CP001108; ACF45515.1; -; Genomic_DNA.
DR   RefSeq; WP_012505052.1; NC_011059.1.
DR   AlphaFoldDB; B4S517; -.
DR   SMR; B4S517; -.
DR   STRING; 290512.Paes_0459; -.
DR   EnsemblBacteria; ACF45515; ACF45515; Paes_0459.
DR   KEGG; paa:Paes_0459; -.
DR   eggNOG; COG0781; Bacteria.
DR   HOGENOM; CLU_087843_3_0_10; -.
DR   OMA; DAFLILY; -.
DR   OrthoDB; 1574817at2; -.
DR   Proteomes; UP000002725; 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..168
FT                   /note="Transcription antitermination protein NusB"
FT                   /id="PRO_1000092571"
SQ   SEQUENCE   168 AA;  19242 MW;  6D374316AAA8C119 CRC64;
     MKAHRRHIRE KIVQALYTLD VRDTDTATAG DWLITPEISK DPKAIRFFKQ LLGAIVDNRE
     EIDQYISKHT FNWDMSRIAI IDKNILRMAM AEILYFEDIP PKVSINEAIE IAKKFNSTDK
     SSKFVNGILD AVYNDLNKSG KINKCGRGLI DQSSNLKKNK EKSPSDDQ