ID   NUSB_CHLT3              Reviewed;         211 AA.
AC   B3QV72;
DT   24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT   02-SEP-2008, sequence version 1.
DT   25-MAY-2022, entry version 68.
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=Ctha_0555;
OS   Chloroherpeton thalassium (strain ATCC 35110 / GB-78).
OC   Bacteria; Chlorobi; Chlorobia; Chlorobiales; Chlorobiaceae; Chloroherpeton.
OX   NCBI_TaxID=517418;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 35110 / GB-78;
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., Mikhailova N., Liu Z., Li T., Zhao F., Overmann J.,
RA   Bryant D.A., Richardson P.;
RT   "Complete sequence of Chloroherpeton thalassium ATCC 35110.";
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; CP001100; ACF13026.1; -; Genomic_DNA.
DR   AlphaFoldDB; B3QV72; -.
DR   SMR; B3QV72; -.
DR   STRING; 517418.Ctha_0555; -.
DR   EnsemblBacteria; ACF13026; ACF13026; Ctha_0555.
DR   KEGG; cts:Ctha_0555; -.
DR   eggNOG; COG0781; Bacteria.
DR   HOGENOM; CLU_087843_3_0_10; -.
DR   OMA; RREIDYM; -.
DR   Proteomes; UP000001208; 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_1000092539"
FT   REGION          152..211
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        177..202
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   211 AA;  24013 MW;  53EC4B6EC85FFD11 CRC64;
     MIISRRQIRE LAMQVLYAYE VRKEKVDKVA KGIIPEDVVA DIKAKDFIFK IINSVIQNIQ
     DIDTHIAKHA DNWELNRMAI IDKNLMRIAI AEMLYLDDVP PKVSINEAIE IAKRYSTDKS
     SKFVNGILDA TYNEVKSKGV LHKSGRGLVD LPAKKERVAN PFPSTPPKKP ENVPNPFSTP
     FKKNSSEPIR NPFEGNKSPQ PPQKTLRRKK K