ID   RPOA_LACCB              Reviewed;         312 AA.
AC   B3WAJ2;
DT   24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT   02-SEP-2008, sequence version 1.
DT   03-AUG-2022, entry version 80.
DE   RecName: Full=DNA-directed RNA polymerase subunit alpha {ECO:0000255|HAMAP-Rule:MF_00059};
DE            Short=RNAP subunit alpha {ECO:0000255|HAMAP-Rule:MF_00059};
DE            EC=2.7.7.6 {ECO:0000255|HAMAP-Rule:MF_00059};
DE   AltName: Full=RNA polymerase subunit alpha {ECO:0000255|HAMAP-Rule:MF_00059};
DE   AltName: Full=Transcriptase subunit alpha {ECO:0000255|HAMAP-Rule:MF_00059};
GN   Name=rpoA {ECO:0000255|HAMAP-Rule:MF_00059}; OrderedLocusNames=LCABL_26450;
OS   Lacticaseibacillus casei (strain BL23) (Lactobacillus casei).
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Lactobacillaceae;
OC   Lacticaseibacillus.
OX   NCBI_TaxID=543734;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=BL23;
RA   Maze A., Boel G., Bourand A., Loux V., Gibrat J.F., Zuniga M., Hartke A.,
RA   Deutscher J.;
RT   "Lactobacillus casei BL23 complete genome sequence.";
RL   Submitted (JUN-2008) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: DNA-dependent RNA polymerase catalyzes the transcription of
CC       DNA into RNA using the four ribonucleoside triphosphates as substrates.
CC       {ECO:0000255|HAMAP-Rule:MF_00059}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a ribonucleoside 5'-triphosphate + RNA(n) = diphosphate +
CC         RNA(n+1); 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:0000255|HAMAP-Rule:MF_00059};
CC   -!- SUBUNIT: Homodimer. The RNAP catalytic core consists of 2 alpha, 1
CC       beta, 1 beta' and 1 omega subunit. When a sigma factor is associated
CC       with the core the holoenzyme is formed, which can initiate
CC       transcription. {ECO:0000255|HAMAP-Rule:MF_00059}.
CC   -!- DOMAIN: The N-terminal domain is essential for RNAP assembly and basal
CC       transcription, whereas the C-terminal domain is involved in interaction
CC       with transcriptional regulators and with upstream promoter elements.
CC       {ECO:0000255|HAMAP-Rule:MF_00059}.
CC   -!- SIMILARITY: Belongs to the RNA polymerase alpha chain family.
CC       {ECO:0000255|HAMAP-Rule:MF_00059}.
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DR   EMBL; FM177140; CAQ67711.1; -; Genomic_DNA.
DR   RefSeq; WP_003567511.1; NC_010999.1.
DR   AlphaFoldDB; B3WAJ2; -.
DR   SMR; B3WAJ2; -.
DR   PRIDE; B3WAJ2; -.
DR   KEGG; lcb:LCABL_26450; -.
DR   HOGENOM; CLU_053084_0_1_9; -.
DR   OMA; LMKFRNF; -.
DR   OrthoDB; 662686at2; -.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProt.
DR   GO; GO:0000428; C:DNA-directed RNA polymerase complex; IEA:UniProtKB-KW.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0003899; F:DNA-directed 5'-3' RNA polymerase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0046983; F:protein dimerization activity; IEA:InterPro.
DR   GO; GO:0006351; P:transcription, DNA-templated; IEA:UniProtKB-UniRule.
DR   Gene3D; 2.170.120.12; -; 1.
DR   Gene3D; 3.30.1360.10; -; 1.
DR   HAMAP; MF_00059; RNApol_bact_RpoA; 1.
DR   InterPro; IPR011262; DNA-dir_RNA_pol_insert.
DR   InterPro; IPR011263; DNA-dir_RNA_pol_RpoA/D/Rpb3.
DR   InterPro; IPR011773; DNA-dir_RpoA.
DR   InterPro; IPR036603; RBP11-like.
DR   InterPro; IPR011260; RNAP_asu_C.
DR   InterPro; IPR036643; RNApol_insert_sf.
DR   PANTHER; PTHR32108; PTHR32108; 1.
DR   Pfam; PF01000; RNA_pol_A_bac; 1.
DR   Pfam; PF03118; RNA_pol_A_CTD; 1.
DR   Pfam; PF01193; RNA_pol_L; 1.
DR   SMART; SM00662; RPOLD; 1.
DR   SUPFAM; SSF55257; SSF55257; 1.
DR   SUPFAM; SSF56553; SSF56553; 1.
DR   TIGRFAMs; TIGR02027; rpoA; 1.
PE   3: Inferred from homology;
KW   DNA-directed RNA polymerase; Nucleotidyltransferase; Transcription;
KW   Transferase.
FT   CHAIN           1..312
FT                   /note="DNA-directed RNA polymerase subunit alpha"
FT                   /id="PRO_1000091951"
FT   REGION          1..226
FT                   /note="Alpha N-terminal domain (alpha-NTD)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00059"
FT   REGION          243..312
FT                   /note="Alpha C-terminal domain (alpha-CTD)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00059"
SQ   SEQUENCE   312 AA;  34759 MW;  CB102701C8B1CA01 CRC64;
     MIEFEKPNIT KVDESTNYGK FVVEPLERGY GTTLGNSLRR ILLSSLPGAA ISSIQIDGVL
     HEFSTIDGVL EDVTQIILNI KKLALKMNTD EDKNIEIDVN GPAKVTAADI VADPDVEVLN
     PEQYICTVAD GGHFHVRMTV KKGRGYVAAD QNKSDDMPIG VLPIDSIFTP ISRVNYQVES
     TRVGRRNDFD KLTLDVWTNG SISPREAISL AAKILTEHLD IFVNLTDEAK NAEIMVEKEE
     THKEKMLEMT IEELDLSVRS YNCLKRAGIN TVQELTNKTE ADMMKVRNLG RKSLEEVKNK
     LADLGLGLRK ED