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RNA Polymerase I MeSH Descriptor Data 2021


MeSH Heading
RNA Polymerase I
Tree Number(s)
D08.811.913.696.445.735.270.750
Unique ID
D012318
RDF Unique Identifier
http://id.nlm.nih.gov/mesh/D012318
Scope Note
A DNA-dependent RNA polymerase present in bacterial, plant, and animal cells. The enzyme functions in the nucleolar structure and transcribes DNA into RNA. It has different requirements for cations and salts than RNA polymerase II and III and is not inhibited by alpha-amanitin.
Entry Term(s)
DNA-Dependent RNA Polymerase I
RNA Polymerase A
Registry Number
EC 2.7.7.6
Previous Indexing
RNA Nucleotidyltransferases (1968-1972)
RNA Polymerases (1973-1976)
Public MeSH Note
84; was see under RNA POLYMERASES 1977-83
History Note
84(77); was see under RNA POLYMERASES 1977-83
Date Established
1984/01/01
Date of Entry
1976/04/19
Revision Date
2016/06/29
RNA Polymerase I Preferred
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