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Literature summary extracted from

  • Shaw, M.L.; Pither-Joyce, M.D.; McCallum, J.A.
    Purification and cloning of a gamma-glutamyl transpeptidase from onion (Allium cepa) (2005), Phytochemistry, 66, 515-522.
    View publication on PubMed

Cloned(Commentary)

EC Number Cloned (Comment) Organism
2.3.2.2 full-length coding region Allium cepa

Inhibitors

EC Number Inhibitors Comment Organism Structure
2.3.2.2 2-carboxypropylglutathione
-
 Allium cepa
2.3.2.2 gamma-glutamyl trans-S-1-propenyl cysteine sulfoxide uncompetitive Allium cepa
2.3.2.2 GSH
-
 Allium cepa
2.3.2.2 S-methyl glutathione
-
 Allium cepa
2.3.2.2 S-propyl glutathione
-
 Allium cepa

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
2.3.2.2 12
-
 5-L-glutamyl-4-nitroanilide
-
 Allium cepa

Localization

EC Number Localization Comment Organism GeneOntology No. Textmining
2.3.2.2 membrane associated to Allium cepa 16020
-

Organism

EC Number Organism UniProt Comment Textmining
2.3.2.2 Allium cepa
-
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
2.3.2.2
-
 Allium cepa

Source Tissue

EC Number Source Tissue Comment Organism Textmining
2.3.2.2 bulb sprouting Allium cepa
-

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
2.3.2.2 11.29
-
 isoform I Allium cepa

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2.3.2.2 5-L-glutamyl-4-nitroanilide + H2O
-
 Allium cepa 4-nitroaniline + Glu
-
 ?
2.3.2.2 5-L-glutamyl-4-nitroanilide + L-Met
-
 Allium cepa 4-nitroaniline + 5-L-glutamyl-L-Met
-
 ?

Synonyms

EC Number Synonyms Comment Organism
2.3.2.2 GGT
-
 Allium cepa

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
2.3.2.2 7
-
 transpeptidation Allium cepa
2.3.2.2 9
-
 hydrolysis Allium cepa

Ki Value [mM]

EC Number Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
2.3.2.2 0.0164
-
 GSH
-
 Allium cepa
2.3.2.2 0.0233
-
 S-methyl glutathione
-
 Allium cepa
2.3.2.2 0.0679
-
 S-propyl glutathione
-
 Allium cepa
2.3.2.2 0.1137
-
 2-carboxypropylglutathione
-
 Allium cepa