ID   TF2B_METPE              Reviewed;         334 AA.
AC   B8GJQ9;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   03-MAR-2009, sequence version 1.
DT   27-MAR-2024, entry version 75.
DE   RecName: Full=Transcription initiation factor IIB {ECO:0000255|HAMAP-Rule:MF_00383};
DE            Short=TFIIB {ECO:0000255|HAMAP-Rule:MF_00383};
GN   Name=tfb {ECO:0000255|HAMAP-Rule:MF_00383};
GN   OrderedLocusNames=Mpal_0331;
OS   Methanosphaerula palustris (strain ATCC BAA-1556 / DSM 19958 / E1-9c).
OC   Archaea; Euryarchaeota; Stenosarchaea group; Methanomicrobia;
OC   Methanomicrobiales; Methanoregulaceae; Methanosphaerula.
OX   NCBI_TaxID=521011;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-1556 / DSM 19958 / E1-9c;
RX   PubMed=26543115; DOI=10.1128/genomea.01280-15;
RA   Cadillo-Quiroz H., Browne P., Kyrpides N., Woyke T., Goodwin L., Detter C.,
RA   Yavitt J.B., Zinder S.H.;
RT   "Complete Genome Sequence of Methanosphaerula palustris E1-9CT, a
RT   Hydrogenotrophic Methanogen Isolated from a Minerotrophic Fen Peatland.";
RL   Genome Announc. 3:0-0(2015).
CC   -!- FUNCTION: Stabilizes TBP binding to an archaeal box-A promoter. Also
CC       responsible for recruiting RNA polymerase II to the pre-initiation
CC       complex (DNA-TBP-TFIIB). {ECO:0000255|HAMAP-Rule:MF_00383}.
CC   -!- SIMILARITY: Belongs to the TFIIB family. {ECO:0000255|HAMAP-
CC       Rule:MF_00383}.
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DR   EMBL; CP001338; ACL15713.1; -; Genomic_DNA.
DR   RefSeq; WP_012617032.1; NC_011832.1.
DR   AlphaFoldDB; B8GJQ9; -.
DR   SMR; B8GJQ9; -.
DR   STRING; 521011.Mpal_0331; -.
DR   GeneID; 7272635; -.
DR   KEGG; mpl:Mpal_0331; -.
DR   eggNOG; arCOG01981; Archaea.
DR   HOGENOM; CLU_043736_0_1_2; -.
DR   OrthoDB; 7429at2157; -.
DR   Proteomes; UP000002457; Chromosome.
DR   GO; GO:0003700; F:DNA-binding transcription factor activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0017025; F:TBP-class protein binding; IEA:InterPro.
DR   GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0070897; P:transcription preinitiation complex assembly; IEA:InterPro.
DR   CDD; cd20549; CYCLIN_TFIIB_archaea_like_rpt1; 1.
DR   CDD; cd20550; CYCLIN_TFIIB_archaea_like_rpt2; 1.
DR   Gene3D; 1.10.472.170; -; 1.
DR   Gene3D; 1.10.472.10; Cyclin-like; 1.
DR   HAMAP; MF_00383; TF2B_arch; 1.
DR   InterPro; IPR013763; Cyclin-like_dom.
DR   InterPro; IPR036915; Cyclin-like_sf.
DR   InterPro; IPR000812; TFIIB.
DR   InterPro; IPR023484; TFIIB_arc.
DR   InterPro; IPR023486; TFIIB_CS.
DR   InterPro; IPR013150; TFIIB_cyclin.
DR   InterPro; IPR013137; Znf_TFIIB.
DR   PANTHER; PTHR11618:SF13; TRANSCRIPTION INITIATION FACTOR IIB; 1.
DR   PANTHER; PTHR11618; TRANSCRIPTION INITIATION FACTOR IIB-RELATED; 1.
DR   Pfam; PF08271; TF_Zn_Ribbon; 1.
DR   Pfam; PF00382; TFIIB; 2.
DR   PRINTS; PR00685; TIFACTORIIB.
DR   SMART; SM00385; CYCLIN; 2.
DR   SUPFAM; SSF47954; Cyclin-like; 2.
DR   SUPFAM; SSF57783; Zinc beta-ribbon; 1.
DR   PROSITE; PS00782; TFIIB; 2.
DR   PROSITE; PS51134; ZF_TFIIB; 1.
PE   3: Inferred from homology;
KW   Metal-binding; Reference proteome; Repeat; Transcription;
KW   Transcription regulation; Zinc; Zinc-finger.
FT   CHAIN           1..334
FT                   /note="Transcription initiation factor IIB"
FT                   /id="PRO_1000134236"
FT   REPEAT          151..234
FT                   /note="1"
FT   REPEAT          245..326
FT                   /note="2"
FT   ZN_FING         34..65
FT                   /note="TFIIB-type"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00469"
FT   BINDING         38
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00469"
FT   BINDING         41
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00469"
FT   BINDING         57
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00469"
FT   BINDING         60
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00469"
SQ   SEQUENCE   334 AA;  38113 MW;  FD099D74053692A5 CRC64;
     MQEIEKLRIL QTEREALKNR NRVIEHEKKT EDHTESVCPE CKSRQLVHDY ERAELVCQNC
     GLVIDDDFID RGPEWRAFDH DQRMKRSRVG APMTFTIHDK GLSTMIDWRN RDSYGRAISS
     KNRAQLYRLR KWQRRIRVSN ATERNLAFAL SELDRMASAL GLPRNVRETA AVVYRDAVDK
     NLIRGRSIEG VAAAALYAAC RQCSVPRTLD EIAEVSRVSR KEIGRTYRFI SRELGLKLLP
     TSPIDYVPRF CSGLTLKGEV QSRAVEILRQ AAERELTSGR GPTGVAAAAI YISSILGGER
     RTQREVAEVA GVTEVTIRNR YKELAEKLDI EIIL
//