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EC 3.2.2.1 Details
EC number
3.2.2.1
Accepted name
purine nucleosidase
Reaction
a purine nucleoside + H2O = D-ribose + a purine base
Other name(s)
nucleosidase (misleading),
purine β-ribosidase,
purine nucleoside hydrolase,
purine ribonucleosidase,
ribonucleoside hydrolase (misleading),
nucleoside hydrolase (misleading),
N-ribosyl purine ribohydrolase,
nucleosidase g,
N-D-ribosylpurine ribohydrolase,
inosine-adenosine-guanosine preferring nucleoside hydrolase,
purine-specific nucleoside N-ribohydrolase,
IAG-nucleoside hydrolase,
IAG-NH
Systematic name
purine-nucleoside ribohydrolase
CAS registry number
9025-44-9
Comment
The enzyme from the bacterium Ochrobactrum anthropi specifically catalyses the irreversible N-riboside hydrolysis of purine nucleosides. Pyrimidine nucleosides, purine and pyrimidine nucleotides, NAD+, NADP+ and nicotinaminde mononucleotide are not substrates [6].
History
created 1961, modified 2006, modified 2011
EC Tree
3.2.2.18 created 1984, deleted 1989