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Literature summary for 6.1.1.18 extracted from

  • Lea, P.J.; Fowden, L.
    Amino acid substrate specificity of asparaginyl-, aspartyl- and glutaminyl-tRNA synthetase isolated from higher plants (1973), Phytochemistry, 12, 1903-1916.
No PubMed abstract available

Activating Compound

Activating Compound Comment Organism Structure
putrescine can partially replace Mg2+ in activation, with 32% efficiency Vigna radiata var. radiata
spermidine can partially replace Mg2+ in activation, with 12% efficiency Vigna radiata var. radiata
spermine can partially replace Mg2+ in activation, with 35% efficiency Vigna radiata var. radiata

Inhibitors

Inhibitors Comment Organism Structure
4-Methyleneglutamine
-
Vigna radiata var. radiata
albizziine
-
Vigna radiata var. radiata
Br- 0.1 M, 50% inhibition Vigna radiata var. radiata
Cl- 0.2 M, 50% inhibition Vigna radiata var. radiata
Glutamic acid 4-hydroxamate
-
Vigna radiata var. radiata
I- 0.06 M, 50% inhibition Vigna radiata var. radiata
S-Carbamoylcysteine
-
Vigna radiata var. radiata
S-Carbamoylserine
-
Vigna radiata var. radiata
Theanine
-
Vigna radiata var. radiata
tRNA above 0.6 mg/ml Vigna radiata var. radiata

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ required Vigna radiata var. radiata
Mg2+ optimal concentration: 25 mM Vigna radiata var. radiata
Mg2+ Km: 8.9 mM Vigna radiata var. radiata
Mn2+ can replace Mg2+ in activation with 42% efficiency Vigna radiata var. radiata

Organism

Organism UniProt Comment Textmining
Albizia julibrissin
-
-
-
Vigna radiata var. radiata
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Vigna radiata var. radiata

Source Tissue

Source Tissue Comment Organism Textmining
cotyledon of seedlings Albizia julibrissin
-
seed
-
Vigna radiata var. radiata
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
-
Vigna radiata var. radiata
additional information
-
-
Albizia julibrissin

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ATP + L-glutamine + tRNAGln
-
Vigna radiata var. radiata AMP + diphosphate + L-glutaminyl-tRNAGln
-
?
ATP + L-glutamine + tRNAGln
-
Albizia julibrissin AMP + diphosphate + L-glutaminyl-tRNAGln
-
?
additional information glutamine-dependent ATP-diphosphate exchange Vigna radiata var. radiata ?
-
?

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.8
-
-
Vigna radiata var. radiata

Ki Value [mM]

Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
0.06
-
I-
-
Vigna radiata var. radiata
0.1
-
Br-
-
Vigna radiata var. radiata
0.2
-
Cl-
-
Vigna radiata var. radiata