ID U3AGF4_9EURY Unreviewed; 316 AA.
AC U3AGF4;
DT 13-NOV-2013, integrated into UniProtKB/TrEMBL.
DT 13-NOV-2013, sequence version 1.
DT 24-JAN-2024, entry version 44.
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=MBEHAL_2623 {ECO:0000313|EMBL:GAD53863.1};
OS Halarchaeum acidiphilum MH1-52-1.
OC Archaea; Euryarchaeota; Stenosarchaea group; Halobacteria; Halobacteriales;
OC Halobacteriaceae.
OX NCBI_TaxID=1261545 {ECO:0000313|EMBL:GAD53863.1, ECO:0000313|Proteomes:UP000016986};
RN [1] {ECO:0000313|EMBL:GAD53863.1, ECO:0000313|Proteomes:UP000016986}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=JCM 16109 {ECO:0000313|EMBL:GAD53863.1,
RC ECO:0000313|Proteomes:UP000016986};
RA Shimane Y., Minegishi H., Nishi S., Echigo A., Shuto A., Konishi M.,
RA Ito T., Ohkuma M., Ohta Y., Nagano Y., Tsubouchi T., Mori K., Usui K.,
RA Kamekura M., Usami R., Takaki Y., Hatada Y.;
RT "Whole genome sequencing of Halarchaeum acidiphilum strain MH1-52-1.";
RL Submitted (SEP-2013) 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:GAD53863.1}.
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DR EMBL; BATA01000117; GAD53863.1; -; Genomic_DNA.
DR RefSeq; WP_021780825.1; NZ_BATA01000117.1.
DR AlphaFoldDB; U3AGF4; -.
DR eggNOG; arCOG01981; Archaea.
DR OrthoDB; 7429at2157; -.
DR Proteomes; UP000016986; 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; 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; 1.
DR PROSITE; PS51134; ZF_TFIIB; 1.
PE 3: Inferred from homology;
KW Initiation factor {ECO:0000313|EMBL:GAD53863.1};
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_00383};
KW Protein biosynthesis {ECO:0000313|EMBL:GAD53863.1};
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|ARBA:ARBA00022771, ECO:0000256|PROSITE-
KW ProRule:PRU00469}.
FT DOMAIN 21..50
FT /note="TFIIB-type"
FT /evidence="ECO:0000259|PROSITE:PS51134"
FT REPEAT 136..219
FT /note="1"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT REPEAT 230..311
FT /note="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT REGION 1..23
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 59..81
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 25
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT BINDING 28
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT BINDING 42
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT BINDING 45
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
SQ SEQUENCE 316 AA; 35514 MW; BE91371B5639D61F CRC64;
MERSIREQDG EQTEQDDGEV VSAQCPECES TNIVTDQGER LCQDCGLVLE EDNIDHGPEW
RAFNSSERDQ KSRVGAPTTQ TMHDKGLTTQ IDWKDKDAYG RSISSKKRSQ MHRLRKWQER
IRTKDAGERN LQFALSEIDR MASALGVPRS VREVASVIYR RALKEDLIRG RSIEGVATAC
LYAACRKESI PRSLEEVAEV SRVGKKEIGR TYRYIAQELS LEMEPVDPKQ YVPRFASELD
ASEETIAKAN EIIDTSAEQG LLSGKSPIGF AAAAIYAAGL LCNDKMTQRE VADVANVTEV
TIRNRYQEQI EAMGFE
//
