ID A0A4E0QY76_9EURY Unreviewed; 265 AA.
AC A0A4E0QY76;
DT 03-JUL-2019, integrated into UniProtKB/TrEMBL.
DT 03-JUL-2019, sequence version 1.
DT 18-JUN-2025, entry version 26.
DE RecName: Full=DNA-directed RNA polymerase subunit Rpo3 {ECO:0000256|HAMAP-Rule:MF_00320};
DE EC=2.7.7.6 {ECO:0000256|HAMAP-Rule:MF_00320};
DE AltName: Full=DNA-directed RNA polymerase subunit D {ECO:0000256|HAMAP-Rule:MF_00320};
GN Name=rpo3 {ECO:0000256|HAMAP-Rule:MF_00320};
GN Synonyms=rpoD {ECO:0000256|HAMAP-Rule:MF_00320};
GN ORFNames=CUN85_09220 {ECO:0000313|EMBL:TGC08490.1};
OS Methanolobus halotolerans.
OC Archaea; Methanobacteriati; Methanobacteriota; Stenosarchaea group;
OC Methanomicrobia; Methanosarcinales; Methanosarcinaceae; Methanolobus.
OX NCBI_TaxID=2052935 {ECO:0000313|EMBL:TGC08490.1, ECO:0000313|Proteomes:UP000297295};
RN [1] {ECO:0000313|EMBL:TGC08490.1, ECO:0000313|Proteomes:UP000297295}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SY-01 {ECO:0000313|EMBL:TGC08490.1,
RC ECO:0000313|Proteomes:UP000297295};
RA Shen Y., Huang H.-H., Lai M.-C., Chen S.-C.;
RT "Isolation and Characterization of Methanogenic Archaea from Saline
RT Meromictic Lake at Siberia.";
RL Submitted (NOV-2017) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: DNA-dependent RNA polymerase (RNAP) catalyzes the
CC transcription of DNA into RNA using the four ribonucleoside
CC triphosphates as substrates. {ECO:0000256|HAMAP-Rule:MF_00320}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=RNA(n) + a ribonucleoside 5'-triphosphate = RNA(n+1) +
CC diphosphate; Xref=Rhea:RHEA:21248, Rhea:RHEA-COMP:14527, Rhea:RHEA-
CC COMP:17342, ChEBI:CHEBI:33019, ChEBI:CHEBI:61557, ChEBI:CHEBI:140395;
CC EC=2.7.7.6; Evidence={ECO:0000256|HAMAP-Rule:MF_00320};
CC -!- COFACTOR:
CC Name=[3Fe-4S] cluster; Xref=ChEBI:CHEBI:21137;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00320};
CC Note=Binds 1 [3Fe-4S] cluster. {ECO:0000256|HAMAP-Rule:MF_00320};
CC -!- SUBUNIT: Part of the RNA polymerase complex. {ECO:0000256|HAMAP-
CC Rule:MF_00320}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00320}.
CC -!- SIMILARITY: Belongs to the archaeal Rpo3/eukaryotic RPB3 RNA polymerase
CC subunit family. {ECO:0000256|ARBA:ARBA00025804, ECO:0000256|HAMAP-
CC Rule:MF_00320}.
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:TGC08490.1}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; PGGK01000009; TGC08490.1; -; Genomic_DNA.
DR RefSeq; WP_135390027.1; NZ_PGGK01000009.1.
DR AlphaFoldDB; A0A4E0QY76; -.
DR OrthoDB; 84933at2157; -.
DR Proteomes; UP000297295; Unassembled WGS sequence.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0000428; C:DNA-directed RNA polymerase complex; IEA:UniProtKB-KW.
DR GO; GO:0051538; F:3 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
DR GO; GO:0003677; F:DNA binding; IEA:UniProtKB-UniRule.
DR GO; GO:0003899; F:DNA-directed RNA polymerase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0016491; F:oxidoreductase activity; IEA:UniProtKB-ARBA.
DR GO; GO:0046983; F:protein dimerization activity; IEA:InterPro.
DR GO; GO:0006351; P:DNA-templated transcription; IEA:UniProtKB-UniRule.
DR CDD; cd07030; RNAP_D; 1.
DR Gene3D; 3.30.70.3110; -; 1.
DR Gene3D; 2.170.120.12; DNA-directed RNA polymerase, insert domain; 1.
DR Gene3D; 3.30.1360.10; RNA polymerase, RBP11-like subunit; 1.
DR HAMAP; MF_00320; RNApol_arch_Rpo3; 1.
DR InterPro; IPR017896; 4Fe4S_Fe-S-bd.
DR InterPro; IPR017900; 4Fe4S_Fe_S_CS.
DR InterPro; IPR001514; DNA-dir_RNA_pol_30-40kDasu_CS.
DR InterPro; IPR011262; DNA-dir_RNA_pol_insert.
DR InterPro; IPR011263; DNA-dir_RNA_pol_RpoA/D/Rpb3.
DR InterPro; IPR036603; RBP11-like.
DR InterPro; IPR022842; RNAP_Rpo3/Rpb3/RPAC1.
DR InterPro; IPR036643; RNApol_insert_sf.
DR InterPro; IPR050518; Rpo3/RPB3_RNA_Pol_subunit.
DR NCBIfam; NF001988; PRK00783.1; 1.
DR PANTHER; PTHR11800; DNA-DIRECTED RNA POLYMERASE; 1.
DR PANTHER; PTHR11800:SF2; DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB3; 1.
DR Pfam; PF01000; RNA_pol_A_bac; 1.
DR Pfam; PF01193; RNA_pol_L; 1.
DR SMART; SM00662; RPOLD; 1.
DR SUPFAM; SSF56553; Insert subdomain of RNA polymerase alpha subunit; 1.
DR SUPFAM; SSF55257; RBP11-like subunits of RNA polymerase; 1.
DR PROSITE; PS00198; 4FE4S_FER_1; 1.
DR PROSITE; PS51379; 4FE4S_FER_2; 2.
DR PROSITE; PS00446; RNA_POL_D_30KD; 1.
PE 3: Inferred from homology;
KW 3Fe-4S {ECO:0000256|HAMAP-Rule:MF_00320};
KW Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_00320};
KW DNA-directed RNA polymerase {ECO:0000256|ARBA:ARBA00022478,
KW ECO:0000256|HAMAP-Rule:MF_00320}; Iron {ECO:0000256|HAMAP-Rule:MF_00320};
KW Iron-sulfur {ECO:0000256|HAMAP-Rule:MF_00320};
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_00320};
KW Nucleotidyltransferase {ECO:0000256|HAMAP-Rule:MF_00320};
KW Reference proteome {ECO:0000313|Proteomes:UP000297295};
KW Transcription {ECO:0000256|ARBA:ARBA00023163, ECO:0000256|HAMAP-
KW Rule:MF_00320}; Transferase {ECO:0000256|HAMAP-Rule:MF_00320}.
FT DOMAIN 163..192
FT /note="4Fe-4S ferredoxin-type"
FT /evidence="ECO:0000259|PROSITE:PS51379"
FT DOMAIN 193..224
FT /note="4Fe-4S ferredoxin-type"
FT /evidence="ECO:0000259|PROSITE:PS51379"
FT BINDING 204
FT /ligand="[3Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:21137"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00320"
FT BINDING 207
FT /ligand="[3Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:21137"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00320"
FT BINDING 210
FT /ligand="[3Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:21137"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00320"
SQ SEQUENCE 265 AA; 28546 MW; D4F62BD9B7B2372C CRC64;
MTMEIDVLEI SERSAKFVLS NVSAAFANGI RRAALSDVPT LAIDDVNIYN NTSVLFDEQL
ALRLALVPLT ANIGDFVPMQ ECSCDGSECP ACKVSLTLSA EGPKMVYSGD MISSDETVLP
ADLNVPIVDL KEGQKLVLEA IAHMGYGHQH AKWQAGVACG YKNMPVVTFS GCDKCNACIG
ECPQDIIKMG PEGAEISGED IFKCILCKLC AEICEIDAIK VSYDENSFIL TMESDGSYTI
QELIINAGKN IKDKAARMGE ILDSL
//
