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Literature summary for 3.5.4.15 extracted from

  • Negishi, O.; Ozawa, T.; Imagawa, H.
    Guanosine deaminase and guanine deaminase from tea leaves (1994), Biosci. Biotechnol. Biochem., 58, 1277-1281.
No PubMed abstract available

Application

Application Comment Organism
medicine caffeine biosynthesis and purine metabolism Camellia sinensis

Inhibitors

Inhibitors Comment Organism Structure
Cd2+
-
Camellia sinensis
Cu2+
-
Camellia sinensis
p-chloromercuribenzoate
-
Camellia sinensis
Pb2+
-
Camellia sinensis
Zn2+
-
Camellia sinensis

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.0098
-
guanosine
-
Camellia sinensis

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
18000
-
gel filtration Camellia sinensis

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
adenine + H2O Camellia sinensis
-
allopurinol + NH3
-
?
adenosine + H2O Camellia sinensis
-
inosine + NH3
-
?
cytidine + H2O Camellia sinensis
-
uridine + NH3
-
?

Organism

Organism UniProt Comment Textmining
Camellia sinensis
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Camellia sinensis

Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
Camellia sinensis
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
143
-
-
Camellia sinensis

Storage Stability

Storage Stability Organism
-20°C, 7 days Camellia sinensis

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2'-deoxyguanosine + H2O
-
Camellia sinensis 2'-deoxyxanthosine + NH3
-
?
adenine + H2O
-
Camellia sinensis allopurinol + NH3
-
?
adenosine + H2O
-
Camellia sinensis inosine + NH3
-
?
cytidine + H2O
-
Camellia sinensis uridine + NH3
-
?
guanosine + H2O
-
Camellia sinensis xanthosine + NH3
-
?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
40
-
rapidly decreased above 50°C Camellia sinensis