3.5.99.2: aminopyrimidine aminohydrolase
This is an abbreviated version!
For detailed information about aminopyrimidine aminohydrolase, go to the full flat file.
Word Map on EC 3.5.99.2
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3.5.99.2
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transketolase
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polioencephalomalacia
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thiaminolyticus
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cerebrocortical
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tenas
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pseudoharengus
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alosa
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4-amino-5-hydroxymethyl-2-methylpyrimidine
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venerupis
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shad
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dorosoma
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decussata
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2.5.1.2
- 3.5.99.2
- transketolase
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polioencephalomalacia
- thiaminolyticus
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cerebrocortical
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tenas
- pseudoharengus
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alosa
- 4-amino-5-hydroxymethyl-2-methylpyrimidine
- venerupis
- shad
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dorosoma
- decussata
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2.5.1.2
Reaction
Synonyms
HP1287, TenA, TenA_C, Thi20, Thi20p, thiaminase, thiaminase II, thiaminase type II
ECTree
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Substrates Products
Substrates Products on EC 3.5.99.2 - aminopyrimidine aminohydrolase
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REACTION DIAGRAM
4-amino-5-aminomethyl-2-methyl-pyrimidine + H2O
4-amino-5-hydroxymethyl-2-methylpyrimidine + NH3
4-amino-5-aminomethyl-2-methylpyrimidine + H2O
4-amino-5-hydroxymethyl-2-methylpyrimidine + NH3
pyrimidinemethanol + aniline
pyrimidinemethylaniline + H2O
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r
thiamine + H2O
4-amino-5-hydroxymethyl-2-methylpyrimidine + 5-(2-hydroxyethyl)-4-methylthiazole
4-amino-5-hydroxymethyl-2-methylpyrimidine + NH3
physiological substrate, hydrolyzed more than two times faster than thiamine. Thiaminase II activity of Thi20p is involved in the thiamine salvage pathway by catalyzing the hydrolysis of 4-amino-5-hydroxymethyl-2-methylpyrimidine precursors in Saccharomyces cerevisiae
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4-amino-5-aminomethyl-2-methyl-pyrimidine + H2O
4-amino-5-hydroxymethyl-2-methylpyrimidine + NH3
hydrolyzed more than two times faster than thiamine
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4-amino-5-hydroxymethyl-2-methylpyrimidine + NH3
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4-amino-5-aminomethyl-2-methylpyrimidine + H2O
4-amino-5-hydroxymethyl-2-methylpyrimidine + NH3
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4-amino-5-aminomethyl-2-methylpyrimidine + H2O
4-amino-5-hydroxymethyl-2-methylpyrimidine + NH3
the wild type enzyme is poorly active on 4-amino-5-aminoethyl-2-methylpyrimidine
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4-amino-5-aminomethyl-2-methylpyrimidine + H2O
4-amino-5-hydroxymethyl-2-methylpyrimidine + NH3
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4-amino-5-hydroxymethyl-2-methylpyrimidine + 5-(2-hydroxyethyl)-4-methylthiazole
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r
thiamine + H2O
4-amino-5-hydroxymethyl-2-methylpyrimidine + 5-(2-hydroxyethyl)-4-methylthiazole
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?
thiamine + H2O
4-amino-5-hydroxymethyl-2-methylpyrimidine + 5-(2-hydroxyethyl)-4-methylthiazole
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?
thiamine + H2O
4-amino-5-hydroxymethyl-2-methylpyrimidine + 5-(2-hydroxyethyl)-4-methylthiazole
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ir
thiamine + H2O
4-amino-5-hydroxymethyl-2-methylpyrimidine + 5-(2-hydroxyethyl)-4-methylthiazole
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?
thiamine + H2O
4-amino-5-hydroxymethyl-2-methylpyrimidine + 5-(2-hydroxyethyl)-4-methylthiazole
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?
thiamine + H2O
4-amino-5-hydroxymethyl-2-methylpyrimidine + 5-(2-hydroxyethyl)-4-methylthiazole
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thiamine + H2O
4-amino-5-hydroxymethyl-2-methylpyrimidine + 5-(2-hydroxyethyl)-4-methylthiazole
moulds
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thiamine + H2O
4-amino-5-hydroxymethyl-2-methylpyrimidine + 5-(2-hydroxyethyl)-4-methylthiazole
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?
thiamine + H2O
4-amino-5-hydroxymethyl-2-methylpyrimidine + 5-(2-hydroxyethyl)-4-methylthiazole
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?
thiamine + H2O
4-amino-5-hydroxymethyl-2-methylpyrimidine + 5-(2-hydroxyethyl)-4-methylthiazole
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?
thiamine + H2O
4-amino-5-hydroxymethyl-2-methylpyrimidine + 5-(2-hydroxyethyl)-4-methylthiazole
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thiamine + H2O
4-amino-5-hydroxymethyl-2-methylpyrimidine + 5-(2-hydroxyethyl)-4-methylthiazole
Trichosporon aneurinolyticum
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the enzyme also catalyses the reaction of EC 2.7.4.7
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additional information
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the enzyme also catalyses the reaction of EC 2.7.4.7
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additional information
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no activity with N-formyl-4-amino-5-aminomethyl-2-methylpyrimidine, thiamin monophosphate, thiamin diphosphate, thiamin disulfide, desthiothiamin, and thiochrome
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additional information
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no activity with N-formyl-4-amino-5-aminomethyl-2-methylpyrimidine, thiamin monophosphate, thiamin diphosphate, thiamin disulfide, desthiothiamin, and thiochrome
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additional information
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Thi20p is involved in thiamine synthesis from pyrithiamine and oxythiamin
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additional information
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Thi20p is involved in thiamine synthesis from pyrithiamine and oxythiamin
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additional information
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THI20 is a trifunctional enzyme that is composed of a ThiD-like N-terminal domain that catalyzes the phosphorylation of 4-amino-5-hydroxymethyl-2-methylpyrimidine to 4-amino-5-hydroxymethyl-2-methylpyrimidine phosphate and of 4-amino-5-hydroxymethyl-2-methylpyrimidine phosphate to 4-amino-5-hydroxymethyl-2-methylpyrimidine diphosphate, and a TenA-like C-terminal domain with thiaminase activity
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additional information
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thiamin-degradation products are hydrolyzed by thiaminase II yielding 4-amino-5-hydroxymethyl-2-methylpyrimidine. HMP. The C-terminal domain is homologous to Bacillus subtilis TenA, which catalyzes the production of HMP from thiamin degradation products in the salvage pathway
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additional information
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TenA does not accept TMP and TPP as substrates
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