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Literature summary for 6.1.1.11 extracted from

  • Jakubowski, H.; Pawelkiewicz, J.
    The plant aminoacyl-tRNA synthetases. Purification and characterization of valyl-tRNA, tryptophanyl-tRNA and seryl-tRNA synthetases from yellow lupin seeds (1975), Eur. J. Biochem., 52, 301-310.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
Intact SH-groups required for activity Lupinus luteus

Inhibitors

Inhibitors Comment Organism Structure
2-mercaptoethanol
-
Lupinus luteus
p-hydroxymercuribenzoate
-
Lupinus luteus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.0005
-
tRNASer
-
Lupinus luteus
0.012
-
Ser
-
Lupinus luteus
0.04
-
ATP
-
Lupinus luteus
0.065
-
dATP
-
Lupinus luteus

Metals/Ions

Metals/Ions Comment Organism Structure
KCl 50 mM, required for optimal activity Lupinus luteus
Mg2+ required Lupinus luteus
Mg2+ Km: , 3.5 mM Lupinus luteus

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
55000
-
2 * 55000, SDS-PAGE Lupinus luteus
110000
-
gel filtration Lupinus luteus

Organism

Organism UniProt Comment Textmining
Lupinus luteus
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Lupinus luteus

Source Tissue

Source Tissue Comment Organism Textmining
seed
-
Lupinus luteus
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.15
-
-
Lupinus luteus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ATP + L-serine + tRNASer
-
Lupinus luteus AMP + diphosphate + L-seryl-tRNASer
-
?
dATP + L-serine + tRNASer
-
Lupinus luteus dAMP + diphosphate + L-seryl-tRNASer
-
?

Subunits

Subunits Comment Organism
dimer 2 * 55000, SDS-PAGE Lupinus luteus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.1 8.1 in phosphate and Tris buffer Lupinus luteus
8.1
-
Hepes buffer Lupinus luteus

pH Range

pH Minimum pH Maximum Comment Organism
7.3 10 7.3: about 30% of maximal activity, 10: about 60% of activity maximum Lupinus luteus