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Literature summary for 3.5.4.5 extracted from

  • Wang, T.P.; Sable, H.Z.; Lampen, J.O.
    Enzymatic deamination of cytosine nucleosides (1950), J. Biol. Chem., 184, 17-28.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
acetone
-
Escherichia coli

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.089
-
cytosine
-
Escherichia coli
0.174
-
cytidine
-
Escherichia coli

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
cytidine + H2O Mus musculus
-
uridine + NH3
-
?
cytidine + H2O Escherichia coli
-
uridine + NH3
-
?
cytidine + H2O Saccharomyces cerevisiae
-
uridine + NH3
-
?
cytidine + H2O Bos taurus
-
uridine + NH3
-
?
cytidine + H2O Oryctolagus cuniculus
-
uridine + NH3
-
?
cytidine + H2O Escherichia coli 15 (ATCC 9723)
-
uridine + NH3
-
?
cytidine + H2O Mus musculus BALB/c
-
uridine + NH3
-
?

Organism

Organism UniProt Comment Textmining
Bos taurus
-
calf
-
Escherichia coli
-
-
-
Escherichia coli 15 (ATCC 9723)
-
-
-
Mus musculus
-
mouse
-
Mus musculus
-
BALB/c
-
Mus musculus BALB/c
-
BALB/c
-
Oryctolagus cuniculus
-
rabbit
-
Saccharomyces cerevisiae
-
brewers' yeast
-

Source Tissue

Source Tissue Comment Organism Textmining
intestinal mucosa
-
Bos taurus
-
kidney
-
Mus musculus
-
liver
-
Mus musculus
-
liver
-
Oryctolagus cuniculus
-

Storage Stability

Storage Stability Organism
-20°C, preparations kept 4 months retains original activity Escherichia coli

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
cytidine + H2O
-
Mus musculus uridine + NH3
-
?
cytidine + H2O
-
Escherichia coli uridine + NH3
-
?
cytidine + H2O
-
Saccharomyces cerevisiae uridine + NH3
-
?
cytidine + H2O
-
Bos taurus uridine + NH3
-
?
cytidine + H2O
-
Oryctolagus cuniculus uridine + NH3
-
?
cytidine + H2O
-
Escherichia coli 15 (ATCC 9723) uridine + NH3
-
?
cytidine + H2O
-
Mus musculus BALB/c uridine + NH3
-
?
cytosine + H2O
-
Escherichia coli ?
-
?
cytosine + H2O
-
Escherichia coli 15 (ATCC 9723) ?
-
?

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5.9 7.35 deamination rate 50% higher in phosphate buffers with pH 7.25-8.7 Escherichia coli