ID A0A135VW12_9ARCH Unreviewed; 307 AA.
AC A0A135VW12;
DT 11-MAY-2016, integrated into UniProtKB/TrEMBL.
DT 11-MAY-2016, sequence version 1.
DT 27-MAR-2024, entry version 26.
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 ECO:0000313|EMBL:KXH76739.1};
GN ORFNames=AM324_13665 {ECO:0000313|EMBL:KXH76739.1};
OS Candidatus Thorarchaeota archaeon SMTZ1-83.
OC Archaea; Asgard group; Candidatus Thorarchaeota.
OX NCBI_TaxID=1706445 {ECO:0000313|EMBL:KXH76739.1, ECO:0000313|Proteomes:UP000070043};
RN [1] {ECO:0000313|EMBL:KXH76739.1, ECO:0000313|Proteomes:UP000070043}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SMTZ1-83 {ECO:0000313|EMBL:KXH76739.1};
RX PubMed=26824177;
RA Seitz K.W., Lazar C.S., Hinrichs K.U., Teske A.P., Baker B.J.;
RT "Genomic reconstruction of a novel, deeply branched sediment archaeal
RT phylum with pathways for acetogenesis and sulfur reduction.";
RL ISME J. 0:0-0(2016).
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:KXH76739.1}.
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DR EMBL; LRSK01000089; KXH76739.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A135VW12; -.
DR Proteomes; UP000070043; 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; 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; PS51134; ZF_TFIIB; 1.
PE 3: Inferred from homology;
KW Initiation factor {ECO:0000313|EMBL:KXH76739.1};
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_00383};
KW Protein biosynthesis {ECO:0000313|EMBL:KXH76739.1};
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 7..38
FT /note="TFIIB-type"
FT /evidence="ECO:0000259|PROSITE:PS51134"
FT REPEAT 124..207
FT /note="1"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT REPEAT 218..299
FT /note="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT BINDING 11
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT BINDING 14
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT BINDING 30
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT BINDING 33
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
SQ SEQUENCE 307 AA; 33895 MW; 9F00772D45DE43EA CRC64;
MTSRQKGVAV CSICGGNDFY EDLTRGESIC TSCGCVINER HIDSGPEWRA FTAEERDARA
RTGSPMTLTM ADKGLATTIG WSDRDANGRT IAATSRAAIY RMRKWQIRTL VHSSQHRNLS
IAMSEMDRLT SQLGVPHETK ETSALIYRKA LSKRLVRGRS IEGMVAATIY LSCRIHKIPR
QLDEIVTEAR VNRKELGQCV RLILRNVDVK VPIPSANDLM PRISADLQLD GKTVQTAMGI
INDARNQGIT AGKDPGGLAA AALYIAGIIT EDRRTQREIA EASNVTEVTV RNRYKDLANS
LKITIKP
//
