Escherichia coli K-12 substr. MG1655 Reaction:

Superclasses: Reactions Classified By Conversion TypeSimple ReactionsChemical Reactions
Reactions Classified By SubstrateSmall-Molecule Reactions

EC Number:

Enzymes and Genes:
RNase I, cleaves phosphodiester bond between any two nucleotidesInferred from experiment: rna

Reaction Locations: periplasm (sensu Gram-negative Bacteria)

The direction shown, i.e. which substrates are on the left and right sides, is in accordance with the direction in which it was curated.

Mass balance status: Balance undetermined; a substrate lacks a chemical formula

Enzyme Commission Primary Name: Enterobacter ribonuclease

This reaction is the endonucleolytic cleavage of RNA to yield nucleoside 3'-phosphates and 3'-phosphooligonucleotides with 2',3'-cyclic phosphate intermediates.

Enzyme Commission Summary:
Preference for cleavage at CpA. Homopolymers of A, U or G are not hydrolysed.

Citations: [Spahr61, Levy70, Marotta73]

Gene-Reaction Schematic

Gene-Reaction Schematic

Relationship Links: BRENDA:EC:, ENZYME:EC:, IUBMB-ExplorEnz:EC:


Levy70: Levy CC, Goldman P (1970). "Residue specificity of a ribonuclease which hydrolyzes polycytidylic acid." J Biol Chem 245(12);3257-62. PMID: 5432809

Marotta73: Marotta CA, Levy CC, Weissman SM, Varricchio F (1973). "Preferred sites of digestion of a ribonuclease from Enterobacter sp. in the sequence analysis of Bacillus stearothermophilus 5S ribonucleic acid." Biochemistry 12(15);2901-4. PMID: 4719125

Spahr61: Spahr PF, Hollingworth BR (1961). "Purification and Mechanism of Action of Ribonuclease from Escherichia coli Ribosomes." J Biol Chem 236: 823-31.

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Please cite the following article in publications resulting from the use of EcoCyc: Nucleic Acids Research 41:D605-12 2013
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