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Literature summary extracted from

  • Le Floc'h, F.; Lafleuriel, J.
    The purine nucleosidases of Jerusalem artichoke shoots (1981), Phytochemistry, 20, 2127-2129.
No PubMed abstract available

General Stability

EC Number General Stability Organism
3.2.2.7 highly stable at 4°C and under deep-freeze conditions, no reducing agent required for stability Helianthus tuberosus

Inhibitors

EC Number Inhibitors Comment Organism Structure
3.2.2.2 6-mercaptopurine riboside
-
Helianthus tuberosus

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
3.2.2.2 0.0025
-
Inosine
-
Helianthus tuberosus
3.2.2.2 0.0085
-
guanosine
-
Helianthus tuberosus
3.2.2.7 0.017
-
adenosine
-
Helianthus tuberosus

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
3.2.2.2 inosine + H2O Helianthus tuberosus
-
hypoxanthine + D-ribose
-
?
3.2.2.7 adenosine + H2O Helianthus tuberosus 6-aminopurine-9-beta-D-ribofuranoside 6-aminopurine + D-ribofuranose
-
ir

Organism

EC Number Organism UniProt Comment Textmining
3.2.2.2 Helianthus tuberosus
-
Jerusalem artichoke
-
3.2.2.7 Helianthus tuberosus
-
artichoke
-

Purification (Commentary)

EC Number Purification (Comment) Organism
3.2.2.2
-
Helianthus tuberosus

Source Tissue

EC Number Source Tissue Comment Organism Textmining
3.2.2.2 shoot
-
Helianthus tuberosus
-
3.2.2.7 shoot
-
Helianthus tuberosus
-

Storage Stability

EC Number Storage Stability Organism
3.2.2.2 -25°C, highly stable at deep-freeze conditions Helianthus tuberosus
3.2.2.2 4°C, highly stable Helianthus tuberosus

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.2.2.2 6-mercaptopurine riboside + H2O inhibitor and substrate Helianthus tuberosus 6-mercaptopurine + D-ribose
-
?
3.2.2.2 adenosine + H2O
-
Helianthus tuberosus adenine + D-ribose
-
?
3.2.2.2 guanosine + H2O
-
Helianthus tuberosus guanine + D-ribose
-
?
3.2.2.2 inosine + H2O
-
Helianthus tuberosus hypoxanthine + D-ribose
-
?
3.2.2.7 adenosine + H2O 6-aminopurine-9-beta-D-ribofuranoside Helianthus tuberosus 6-aminopurine + D-ribofuranose
-
ir

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.2.2.2 5 7
-
Helianthus tuberosus

pH Range

EC Number pH Minimum pH Maximum Comment Organism
3.2.2.2 9
-
50% of the optimum value Helianthus tuberosus
3.2.2.7 5 7
-
Helianthus tuberosus

pH Stability

EC Number pH Stability pH Stability Maximum Comment Organism
3.2.2.7 9
-
50% activity reatained Helianthus tuberosus