ID   NUSB_CHLTE              Reviewed;         164 AA.
AC   Q8KBS4;
DT   01-FEB-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2002, sequence version 1.
DT   03-AUG-2022, entry version 94.
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=CT1709;
OS   Chlorobaculum tepidum (strain ATCC 49652 / DSM 12025 / NBRC 103806 / TLS)
OS   (Chlorobium tepidum).
OC   Bacteria; Chlorobi; Chlorobia; Chlorobiales; Chlorobiaceae; Chlorobaculum.
OX   NCBI_TaxID=194439;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 49652 / DSM 12025 / NBRC 103806 / TLS;
RX   PubMed=12093901; DOI=10.1073/pnas.132181499;
RA   Eisen J.A., Nelson K.E., Paulsen I.T., Heidelberg J.F., Wu M., Dodson R.J.,
RA   DeBoy R.T., Gwinn M.L., Nelson W.C., Haft D.H., Hickey E.K., Peterson J.D.,
RA   Durkin A.S., Kolonay J.F., Yang F., Holt I.E., Umayam L.A., Mason T.M.,
RA   Brenner M., Shea T.P., Parksey D.S., Nierman W.C., Feldblyum T.V.,
RA   Hansen C.L., Craven M.B., Radune D., Vamathevan J.J., Khouri H.M.,
RA   White O., Gruber T.M., Ketchum K.A., Venter J.C., Tettelin H., Bryant D.A.,
RA   Fraser C.M.;
RT   "The complete genome sequence of Chlorobium tepidum TLS, a photosynthetic,
RT   anaerobic, green-sulfur bacterium.";
RL   Proc. Natl. Acad. Sci. U.S.A. 99:9509-9514(2002).
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; AE006470; AAM72933.1; -; Genomic_DNA.
DR   RefSeq; NP_662591.1; NC_002932.3.
DR   RefSeq; WP_010933372.1; NC_002932.3.
DR   AlphaFoldDB; Q8KBS4; -.
DR   SMR; Q8KBS4; -.
DR   STRING; 194439.CT1709; -.
DR   EnsemblBacteria; AAM72933; AAM72933; CT1709.
DR   KEGG; cte:CT1709; -.
DR   PATRIC; fig|194439.7.peg.1544; -.
DR   eggNOG; COG0781; Bacteria.
DR   HOGENOM; CLU_087843_3_0_10; -.
DR   OMA; MKTYRRQ; -.
DR   OrthoDB; 1574817at2; -.
DR   Proteomes; UP000001007; 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..164
FT                   /note="Transcription antitermination protein NusB"
FT                   /id="PRO_0000176526"
SQ   SEQUENCE   164 AA;  19214 MW;  F0ECF9B11952581F CRC64;
     MKTYRRQLRE KIIQALYTLE LRDVDTDSAA NWLLTKEIMD DPNAMKFFNH LMQSIVRNRE
     EIDRYIAKHT FNWDMSRIAI IDKNILRMAL AEILYCEDIP PKVSINEAIE IAKKFSSTDK
     SSKFVNGILD AIFNDMKAEG RIKKCGRGLV DHSEQKMQKT ENNR