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Annotation rule MF_00059
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General rule information [?]

Accession MF_00059
Dates 25-OCT-2002 (Created)
31-JAN-2017 (Last updated, Version 42)
Name RNApol_bact_RpoA
Scope Bacteria
Plastid
Templates P0A7Z4 (RPOA_ECOLI); Q925Z2 (RPOA_RHIME); Q9KWU8 (RPOA_THEAQ); Q9Z9H6 (RPOA_THETH): [Recover all]

Propagated annotation [?]


Identifier, protein and gene names [?]

Identifier
RPOA
case not <OG:Chloroplast>
Protein name
RecName: Full=DNA-directed RNA polymerase subunit alpha;
Short=RNAP subunit alpha;
EC=2.7.7.6;
AltName: Full=RNA polymerase subunit alpha;
AltName: Full=Transcriptase subunit alpha;
end case
case <OG:Chloroplast>
Protein name
RecName: Full=DNA-directed RNA polymerase subunit alpha;
Short=PEP;
EC=2.7.7.6;
AltName: Full=Plastid-encoded RNA polymerase subunit alpha;
Short=RNA polymerase subunit alpha;
end case
Gene name
rpoA

Comments [?]

Function DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates.
Catalytic activity Nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1).
case not <OG:Chloroplast> and not <OC:Cyanobacteria>
Subunit Homodimer. The RNAP catalytic core consists of 2 alpha, 1 beta, 1 beta' and 1 omega subunit. When a sigma factor is associated with the core the holoenzyme is formed, which can initiate transcription.
end case
case <OC:Cyanobacteria>
Subunit In cyanobacteria the RNAP catalytic core is composed of 2 alpha, 1 beta, 1 beta', 1 gamma and 1 omega subunit. When a sigma factor is associated with the core the holoenzyme is formed, which can initiate transcription.
end case
case <OG:Chloroplast>
Subunit In plastids the minimal PEP RNA polymerase catalytic core is composed of four subunits: alpha, beta, beta', and beta''. When a (nuclear-encoded) sigma factor is associated with the core the holoenzyme is formed, which can initiate transcription.
Subcellular location Plastid, chloroplast.
end case
Domain The N-terminal domain is essential for RNAP assembly and basal transcription, whereas the C-terminal domain is involved in interaction with transcriptional regulators and with upstream promoter elements.
Similarity Belongs to the RNA polymerase alpha chain family.

Keywords [?]


Gene Ontology [?]

GO:0003677; Molecular function: DNA binding.
GO:0003899; Molecular function: DNA-directed 5'-3' RNA polymerase activity.
GO:0006351; Biological process: transcription, DNA-templated.
case <OG:Chloroplast>
GO:0009507; Cellular component: chloroplast.
end case

Cross-references [?]

Pfam PF01000; RNA_pol_A_bac; 1;
PF03118; RNA_pol_A_CTD; 1;
TIGRFAMs TIGR02027; rpoA; 1;

Features [?]

From: RPOA_ECOLI (P0A7Z4)
Key     From     To       Description   Tag   Condition   FTGroup
REGION     Nter     235       Alpha N-terminal domain (alpha-NTD)        
REGION     249     Cter       Alpha C-terminal domain (alpha-CTD)        

Additional information [?]

Size range 309-383 amino acids
Related rules None
Fusion None
Comments Divergent BIGNA, CARRP, CHLRE, CHLVU, HELSJ, NEPOL, ONYPE, OLTVI, PELHO, PSEAK, SCEOB, STIHE and Euglids not used in alignment; they are either quite short or have inserts. In PELHO there are 3 rpoA-like genes, but it is not clear if any of them are functional.