ID J2ZVB6_9EURY Unreviewed; 319 AA.
AC J2ZVB6;
DT 03-OCT-2012, integrated into UniProtKB/TrEMBL.
DT 03-OCT-2012, sequence version 1.
DT 24-JAN-2024, entry version 57.
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=HSB1_47950 {ECO:0000313|EMBL:EJN56978.1};
OS Halogranum salarium B-1.
OC Archaea; Euryarchaeota; Stenosarchaea group; Halobacteria; Haloferacales;
OC Haloferacaceae.
OX NCBI_TaxID=1210908 {ECO:0000313|EMBL:EJN56978.1, ECO:0000313|Proteomes:UP000007813};
RN [1] {ECO:0000313|EMBL:EJN56978.1, ECO:0000313|Proteomes:UP000007813}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=B-1 {ECO:0000313|EMBL:EJN56978.1,
RC ECO:0000313|Proteomes:UP000007813};
RX PubMed=23144405; DOI=10.1128/JB.01815-12;
RA Kim K.K., Lee K.C., Lee J.S.;
RT "Draft Genome Sequence of the Extremely Halophilic Archaeon Halogranum
RT salarium B-1T.";
RL J. Bacteriol. 194:6659-6659(2012).
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:EJN56978.1}.
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DR EMBL; ALJD01000017; EJN56978.1; -; Genomic_DNA.
DR AlphaFoldDB; J2ZVB6; -.
DR PATRIC; fig|1210908.3.peg.4465; -.
DR eggNOG; arCOG01981; Archaea.
DR OrthoDB; 7429at2157; -.
DR Proteomes; UP000007813; 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 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:EJN56978.1};
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_00383};
KW Protein biosynthesis {ECO:0000313|EMBL:EJN56978.1};
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 22..52
FT /note="TFIIB-type"
FT /evidence="ECO:0000259|PROSITE:PS51134"
FT REPEAT 138..221
FT /note="1"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT REPEAT 232..313
FT /note="2"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT REGION 1..24
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 9..23
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 26
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT BINDING 29
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT BINDING 44
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
FT BINDING 47
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00383"
SQ SEQUENCE 319 AA; 35553 MW; C8264CE40474F92A CRC64;
MTETTTEIGI ERTSEKEAPT KSLRTCPECD GKIVQDSEHG ESSCEECGLV VDEMQVDRGP
EWQAYNADDR SEKSRVGAPT TQLMHDKGLS TTIGWKNTDG YGKTIPDRKR ARLQRLRTWD
ERFRTKDAHE RNLKQALTEI RRMASALGLP EPPRETAGIL YRRAVKDNLL PGRSIEGMAT
ACLYAATRQH GSPRTLTTFA DVSRVKRLRI QRAYNYLSRE LGLQIEPENP SKYVPQFASS
LDVSKEATRE AHELLEVATA NGIHSGKSPA GLAAAALYAA SHLTNEGLTQ KEVSNEAHVS
RVTIRNRYQE LLEVYGAQG
//
