ID   NUSB_RIPO1              Reviewed;         211 AA.
AC   B7K4P4;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   10-FEB-2009, sequence version 1.
DT   03-AUG-2022, entry version 71.
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};
GN   OrderedLocusNames=PCC8801_1452;
OS   Rippkaea orientalis (strain PCC 8801) (Cyanothece sp. (strain PCC 8801)).
OC   Bacteria; Cyanobacteria; Oscillatoriophycideae; Chroococcales;
OC   Aphanothecaceae; Rippkaea; Rippkaea orientalis.
OX   NCBI_TaxID=41431;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 8801;
RX   PubMed=21972240; DOI=10.1128/mbio.00214-11;
RA   Bandyopadhyay A., Elvitigala T., Welsh E., Stockel J., Liberton M., Min H.,
RA   Sherman L.A., Pakrasi H.B.;
RT   "Novel metabolic attributes of the genus Cyanothece, comprising a group of
RT   unicellular nitrogen-fixing Cyanobacteria.";
RL   MBio 2:E214-E214(2011).
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; CP001287; ACK65509.1; -; Genomic_DNA.
DR   RefSeq; WP_012594782.1; NC_011726.1.
DR   AlphaFoldDB; B7K4P4; -.
DR   SMR; B7K4P4; -.
DR   STRING; 41431.PCC8801_1452; -.
DR   PRIDE; B7K4P4; -.
DR   EnsemblBacteria; ACK65509; ACK65509; PCC8801_1452.
DR   KEGG; cyp:PCC8801_1452; -.
DR   eggNOG; COG0781; Bacteria.
DR   HOGENOM; CLU_087843_0_0_3; -.
DR   OMA; KPQQIAR; -.
DR   OrthoDB; 1574817at2; -.
DR   Proteomes; UP000008204; 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..211
FT                   /note="Transcription antitermination protein NusB"
FT                   /id="PRO_1000192432"
SQ   SEQUENCE   211 AA;  24102 MW;  AE0B760724B48CC5 CRC64;
     MPPRQQPRRI SRELALLSLS QINATPEKLE QIEINNLILA AIRTLTTESQ DMLETAASEV
     TQGNERLLKS ETQSANVQSA RAMVSEALKL TQGAINRLAH AIELPEMIQL ASQYEVREYA
     LELIGAVNRR RTEIDQQLEA VLVDWQLNRL PKIDRDILRI AVAEILFLEI PNKVAINEAI
     EMAKRYSDDE GYRFINGVLR RFTERLRITN N