ID A0A151BLB6_9ARCH Unreviewed; 320 AA.
AC A0A151BLB6;
DT 08-JUN-2016, integrated into UniProtKB/TrEMBL.
DT 08-JUN-2016, sequence version 1.
DT 24-JAN-2024, entry version 29.
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 ORFNames=AYL31_006080 {ECO:0000313|EMBL:KYH40664.1};
OS Candidatus Bathyarchaeota archaeon B26-1.
OC Archaea; Candidatus Bathyarchaeota.
OX NCBI_TaxID=1779370 {ECO:0000313|EMBL:KYH40664.1, ECO:0000313|Proteomes:UP000075365};
RN [1] {ECO:0000313|EMBL:KYH40664.1, ECO:0000313|Proteomes:UP000075365}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=B26-1 {ECO:0000313|EMBL:KYH40664.1};
RA He Y., Li M., Perumal V., Feng X., Fang J., Xie J., Sievert S., Wang F.;
RT "Evidence for homoacetogenesis among multiple lineages of the archaeal
RT phylum Bathyarchaeota widespread in marine sediments.";
RL Submitted (FEB-2016) to the EMBL/GenBank/DDBJ databases.
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: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:KYH40664.1}.
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DR EMBL; LUCD01000045; KYH40664.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A151BLB6; -.
DR STRING; 1779370.AYL31_006080; -.
DR PATRIC; fig|1779370.3.peg.811; -.
DR Proteomes; UP000075365; Unassembled WGS sequence.
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:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0070897; P:transcription preinitiation complex assembly; IEA:InterPro.
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 Initiation factor {ECO:0000313|EMBL:KYH40664.1};
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_00383};
KW Protein biosynthesis {ECO:0000313|EMBL:KYH40664.1};
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}; Zinc {ECO:0000256|HAMAP-Rule:MF_00383};
KW Zinc-finger {ECO:0000256|PROSITE-ProRule:PRU00469}.
FT DOMAIN 20..51
FT /note="TFIIB-type"
FT /evidence="ECO:0000259|PROSITE:PS51134"
FT REPEAT 137..220
FT /note="1"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT REPEAT 231..312
FT /note="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT BINDING 24
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT BINDING 27
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT BINDING 43
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT BINDING 46
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
SQ SEQUENCE 320 AA; 35549 MW; 77000073FDBFD841 CRC64;
MADIGVMVEM VKEAKSKPLV RDKCPECGST NLIHDYDTGE TVCGGCGLVI QDVMIDKGPE
WRAFTQEEKK SRSRVGIPTA FSVHDKGLST AIGRIDRDAF GRKLPLSTRL QMWRLKKWQI
RSRVHSSLDR NLAQAMAELD RLSDKVAIPN AVKEKAAVIY RKALDKGLVR GRSIAAIAAA
SLYAACRITG TPRSLREISE ASLVNRKDVA RCYRLLLREL DIKMPIADPL TYLPKIAERS
KVSGHTQALA MKILQEARRR HVSAGKDPMG LAAAALYIAC MQANEKKTQK DIAEAANITE
VTVRNRYKTL KTQLNLELPN
//
