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Literature summary extracted from

  • Eng, F.W.H.T.
    Dipeptidyl tetrapeptide hyrolase, a new enzyme with dipeptidyl ligase activity (1984), Can. J. Biochem. Cell Biol., 62, 516-528.
No PubMed abstract available

Activating Compound

EC Number Activating Compound Comment Organism Structure
3.4.14.6 thiols activate, strict requirement for reduced sulfhydryl group Brassica oleracea

Inhibitors

EC Number Inhibitors Comment Organism Structure
3.4.14.6 diisopropylfluorophosphate alone slightly and in combination with p-hydroxymercuribenzoate strong Brassica oleracea
3.4.14.6 dithiothreitol slight Brassica oleracea
3.4.14.6 p-hydroxymercuribenzoate
-
Brassica oleracea
3.4.14.6 puromycin 0.005 M: no effect, 0.025 M: complete inhibition, Ala-Gly-Ala-Gly synthesis Brassica oleracea

Organism

EC Number Organism UniProt Comment Textmining
3.4.14.6 Brassica oleracea
-
cabbage
-

Purification (Commentary)

EC Number Purification (Comment) Organism
3.4.14.6 partial Brassica oleracea

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
3.4.14.6 0.00867
-
-
Brassica oleracea
3.4.14.6 0.0267
-
-
Brassica oleracea

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.4.14.6 Ala-Gly
-
Brassica oleracea Ala-Gly-Ala-Gly + H2O
-
r
3.4.14.6 Ala-Gly-Ala-Gly + H2O
-
Brassica oleracea 2 Ala-Gly
-
r
3.4.14.6 Gly-Gly + H2O
-
Brassica oleracea Gly-Gly-Gly-Gly
-
r
3.4.14.6 Gly-Gly-Gly-Gly + H2O
-
Brassica oleracea Gly-Gly
-
r
3.4.14.6 Gly-L-Ala + H2O
-
Brassica oleracea Gly-Ala-Gly-Ala
-
?
3.4.14.6 L-Ala-L-Ala + H2O
-
Brassica oleracea Ala-Ala-Ala-Ala
-
?
3.4.14.6 L-Met-Gly + H2O very slowly Brassica oleracea ?
-
?
3.4.14.6 additional information tetrapeptides are formed from Ala-Ala, Gly-Gly, Ala-Gly and Gly-Ala without prior activation of the carboxyl group, condensation reaction: substrate specificity for a dipeptide with either two Ala residues or one Ala and one Gly residue, not hydrolyzed: pentaglycine, no condensation reaction with: Ser-Gly, Ala-Ala-Gly, Gly-Gly-Ala, Gly-Gly-Gly, Gly-Gly-leu, beta-Ala-Gly, Gly-leu, D-Ala-L-Ala, Gly-D-Ala Brassica oleracea ?
-
?

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
3.4.14.6 30
-
assay at Brassica oleracea

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.4.14.6 7.2
-
-
Brassica oleracea

pH Range

EC Number pH Minimum pH Maximum Comment Organism
3.4.14.6 6 8.8 pH 6.0: about 50% of activity maximum, pH 8.8: about 5% of activity maximum Brassica oleracea