ID F0NFB5_SULIR Unreviewed; 309 AA.
AC F0NFB5;
DT 03-MAY-2011, integrated into UniProtKB/TrEMBL.
DT 03-MAY-2011, sequence version 1.
DT 24-JAN-2024, entry version 55.
DE RecName: Full=Transcription initiation factor IIB {ECO:0000256|ARBA:ARBA00013932, ECO:0000256|HAMAP-Rule:MF_00383};
DE Short=TFIIB {ECO:0000256|HAMAP-Rule:MF_00383};
GN Name=tfb {ECO:0000256|HAMAP-Rule:MF_00383};
GN OrderedLocusNames=SiRe_1555 {ECO:0000313|EMBL:ADX85619.1};
OS Sulfolobus islandicus (strain REY15A).
OC Archaea; Thermoproteota; Thermoprotei; Sulfolobales; Sulfolobaceae;
OC Sulfolobus.
OX NCBI_TaxID=930945 {ECO:0000313|EMBL:ADX85619.1, ECO:0000313|Proteomes:UP000002664};
RN [1] {ECO:0000313|EMBL:ADX85619.1, ECO:0000313|Proteomes:UP000002664}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=REY15A {ECO:0000313|EMBL:ADX85619.1,
RC ECO:0000313|Proteomes:UP000002664};
RX PubMed=21278296; DOI=10.1128/JB.01487-10;
RA Guo L., Brugger K., Liu C., Shah S.A., Zheng H., Zhu Y., Wang S.,
RA Lillestol R.K., Chen L., Frank J., Prangishvili D., Paulin L., She Q.,
RA Huang L., Garrett R.A.;
RT "Genome analyses of icelandic strains of Sulfolobus islandicus, model
RT organisms for genetic and virus-host interaction studies.";
RL J. Bacteriol. 193:1672-1680(2011).
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:0000256|HAMAP-Rule:MF_00383}.
CC -!- SIMILARITY: Belongs to the TFIIB family.
CC {ECO:0000256|ARBA:ARBA00010857, ECO:0000256|HAMAP-Rule:MF_00383}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_00383}.
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DR EMBL; CP002425; ADX85619.1; -; Genomic_DNA.
DR AlphaFoldDB; F0NFB5; -.
DR STRING; 930945.SiRe_1555; -.
DR KEGG; sir:SiRe_1555; -.
DR eggNOG; arCOG01981; Archaea.
DR HOGENOM; CLU_043736_0_1_2; -.
DR OMA; RTQKDFA; -.
DR Proteomes; UP000002664; 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:0003743; F:translation initiation factor activity; IEA:UniProtKB-KW.
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.
PE 3: Inferred from homology;
KW Initiation factor {ECO:0000313|EMBL:ADX85619.1};
KW Protein biosynthesis {ECO:0000313|EMBL:ADX85619.1};
KW Repeat {ECO:0000256|ARBA:ARBA00022737, ECO:0000256|HAMAP-Rule:MF_00383};
KW Transcription {ECO:0000256|ARBA:ARBA00023163, ECO:0000256|HAMAP-
KW Rule:MF_00383};
KW Transcription regulation {ECO:0000256|ARBA:ARBA00023015, ECO:0000256|HAMAP-
KW Rule:MF_00383}.
FT REPEAT 125..208
FT /note="1"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT DOMAIN 125..206
FT /note="Cyclin-like"
FT /evidence="ECO:0000259|SMART:SM00385"
FT REPEAT 219..300
FT /note="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT DOMAIN 219..300
FT /note="Cyclin-like"
FT /evidence="ECO:0000259|SMART:SM00385"
SQ SEQUENCE 309 AA; 34681 MW; D28AAE5BCB5CFCDD CRC64;
MLYLSEENKP VSTPCPPDKI IFDAERGEYI CSETGEVLED KIIDQGPEWR AFTPEEKEKR
SRVGGPLNNT IHDRGLSTLI DWKDKDAMGR TLDPKRRLEA LRWRKWQIRA RIQSSIDRNL
AQAMNELERI GNLLNLPKSV KDEAALIYRK AVEKGLVRGR SIESVVAAAI YAACRRMKLA
RTLDEIAQYT KANRKEVARC YRLLLRELDV SVPVSDPKDY VTRIANLLGL SGAVMKTAAE
IIDKAKGSGL TAGKDPAGLA AAAIYIASLL HDERRTQKEI AQVAGVTEVT VRNRYKELTQ
ELKISIPTQ
//