RNA Polymerase I

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.

Year introduced: 1984(1977)

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Tree Number(s): D08.811.913.696.445.735.270.750

MeSH Unique ID: D012318

Registry Number: EC 2.7.7.6

Entry Terms:

• Polymerase I, RNA
• DNA-Dependent RNA Polymerase I
• DNA Dependent RNA Polymerase I
• RNA Polymerase A
• Polymerase A, RNA

Previous Indexing:

• RNA Nucleotidyltransferases (1968-1972)
• RNA Polymerases (1973-1976)

All MeSH Categories
Chemicals and Drugs Category
Enzymes and Coenzymes
Enzymes
Transferases
Phosphotransferases
Nucleotidyltransferases
RNA Nucleotidyltransferases
DNA-Directed RNA Polymerases
RNA Polymerase I