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Literature summary for 2.5.1.53 extracted from

  • Murakoshi, I.; Ikegami, F.; Ookawa, N.; Ariki, T.; Haginawa, J.; Kuo, Y.H.; Lambein, F.
    Biosynthesis of the uraclylalanine willdardiine and isowillardiine in higher plants (1978), Phytochemistry, 17, 1571-1576.
No PubMed abstract available

Inhibitors

Inhibitors Comment Organism Structure
hydroxylamine 100 mM, complete Albizia julibrissin
hydroxylamine 100 mM, complete Fagus crenata
hydroxylamine 100 mM, complete Lathyrus odoratus
hydroxylamine 100 mM, complete Leucaena leucocephala
hydroxylamine 100 mM, complete Pisum sativum
KCN 100 mM, complete Albizia julibrissin
KCN 100 mM, complete Fagus crenata
KCN 100 mM, complete Lathyrus odoratus
KCN 100 mM, complete Leucaena leucocephala
KCN 100 mM, complete Pisum sativum
pyridoxal 5'-phosphate activation at 0.06 mg/ml Albizia julibrissin
pyridoxal 5'-phosphate activation at 0.06 mg/ml Fagus crenata
pyridoxal 5'-phosphate activation at 0.06 mg/ml Lathyrus odoratus
pyridoxal 5'-phosphate activation at 0.06 mg/ml Leucaena leucocephala
pyridoxal 5'-phosphate 0.25 mg/ml, 12% inhibition of willardine synthase and 4% inhibition of isowillardine synthase; activation at 0.06 mg/ml Pisum sativum
Uracil
-
Pisum sativum

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
3.3
-
Uracil synthesis of isowillardiine Pisum sativum
10
-
Uracil willardiine synthesis Pisum sativum

Organism

Organism UniProt Comment Textmining
Albizia julibrissin
-
-
-
Fagus crenata
-
-
-
Lathyrus odoratus
-
-
-
Leucaena leucocephala
-
-
-
no activity in Citrullus vulgaris
-
-
-
no activity in Fagus japonica
-
-
-
no activity in Lupinus luteus
-
-
-
Pisum sativum
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
seedling
-
Albizia julibrissin
-
seedling
-
Leucaena leucocephala
-
seedling
-
Lathyrus odoratus
-
seedling
-
Fagus crenata
-
seedling activity increases during 3-8 days growth. No activity in extracts of 1-day-old seedlings Pisum sativum
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2 O3-acetyl-L-serine + 2 uracil
-
Albizia julibrissin 3-(uracil-1-yl)-L-alanine + 3-(uracil-3-yl)-L-alanine + 2 acetate i.e. willardiine and isowillardiine ?
2 O3-acetyl-L-serine + 2 uracil
-
Leucaena leucocephala 3-(uracil-1-yl)-L-alanine + 3-(uracil-3-yl)-L-alanine + 2 acetate i.e. willardiine and isowillardiine ?
2 O3-acetyl-L-serine + 2 uracil
-
Lathyrus odoratus 3-(uracil-1-yl)-L-alanine + 3-(uracil-3-yl)-L-alanine + 2 acetate i.e. willardiine and isowillardiine ?
2 O3-acetyl-L-serine + 2 uracil
-
Fagus crenata 3-(uracil-1-yl)-L-alanine + 3-(uracil-3-yl)-L-alanine + 2 acetate i.e. willardiine and isowillardiine ?
2 O3-acetyl-L-serine + 2 uracil concentration of uracil at around 13 mM and 35 mM is sufficient to give maximal rates of willardiine and isowillardiine synthesis Pisum sativum 3-(uracil-1-yl)-L-alanine + 3-(uracil-3-yl)-L-alanine + 2 acetate i.e. willardiine and isowillardiine ?

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.8 7.9
-
Albizia julibrissin
7.8 7.9
-
Pisum sativum
7.8 7.9
-
Leucaena leucocephala
7.8 7.9
-
Lathyrus odoratus
7.8 7.9
-
Fagus crenata

pH Range

pH Minimum pH Maximum Comment Organism
7.5 8.2 about half-maximal activity at pH 7.5 and 8.2 Pisum sativum

Cofactor

Cofactor Comment Organism Structure
pyridoxal 5'-phosphate
-
Albizia julibrissin
pyridoxal 5'-phosphate
-
Leucaena leucocephala
pyridoxal 5'-phosphate
-
Lathyrus odoratus
pyridoxal 5'-phosphate
-
Fagus crenata
pyridoxal 5'-phosphate increases activity Pisum sativum