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Literature summary for 6.3.1.2 extracted from

  • Southern, J.A.; Parker, J.R.; Woods, D.R.
    Novel structure, properties, and inactivation of glutamine synthetase cloned from Bacteroides fragilis (1987), J. Gen. Microbiol., 133, 2437-2446.
No PubMed abstract available

Cloned(Commentary)

Cloned (Comment) Organism
expression in Escherichia coli Bacteroides fragilis

Inhibitors

Inhibitors Comment Organism Structure
(NH4)2SO4 weak, gamma-glutamyl transferase activity Bacteroides fragilis
Ala gamma-glutamyl transferase activity Bacteroides fragilis
Gly gamma-glutamyl transferase activity Bacteroides fragilis
His L-His, gamma-glutamyl transferase activity Bacteroides fragilis
L-Arg gamma-glutamyl transferase activity Bacteroides fragilis
L-Glu gamma-glutamyl transferase activity Bacteroides fragilis
L-Ile weak, gamma-glutamyl transferase activity Bacteroides fragilis
L-methionine sulfoximine gamma-glutamyl transferase assay Bacteroides fragilis
L-Pro weak, gamma-glutamyl transferase activity Bacteroides fragilis
Mg2+ above 0.5 mM, gamma-glutamyl transferase activity Bacteroides fragilis
additional information Bacillus fragilis enzyme produced in E. coli is specifically and irreversibly inactivated by Bacillus fragilis cell extract Bacteroides fragilis
Snake venom diesterase
-
Bacteroides fragilis

Metals/Ions

Metals/Ions Comment Organism Structure
Mn2+ MnCl2 stimulates gamma-glutamyl transferase activity of glutamine synthethase from unshocked cells, no effect on the gamma-glutamyl transferase activity of unshocked cells Bacteroides fragilis

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
75000
-
6 * 75000, isoform GS2, SDS-PAGE Bacteroides fragilis
490000
-
gel filtration Bacteroides fragilis

Organism

Organism UniProt Comment Textmining
Bacteroides fragilis
-
-
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ATP + L-Glu + NH4+
-
Bacteroides fragilis ADP + phosphate + L-Gln
-
?
Gln + hydroxylamine + ADP
-
Bacteroides fragilis gamma-Glutamylhydroxamate + NH4+ + ?
-
?

Subunits

Subunits Comment Organism
hexamer 6 * 75000, isoform GS2, SDS-PAGE Bacteroides fragilis

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
45
-
gamma-glutamyl transferase assay Bacteroides fragilis

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6.5 7 gamma-glutamyl transferase assay Bacteroides fragilis