Literature summary for 2.5.1.18 extracted from

Gildenhuys, S.; Dobreva, M.; Kinsley, N.; Sayed, Y.; Burke, J.; Pelly, S.; Gordon, G.P.; Sayed, M.; Sewell, T.; Dirr, H.W.
Arginine 15 stabilizes an S(N)Ar reaction transition state and the binding of anionic ligands at the active site of human glutathione transferase A1-1 (2010), Biophys. Chem., 146, 118-125.

Cloned(Commentary)

Cloned (Comment)	Organism
overexpression of wild-type and mutant R15L isozyme GSTA1-1 in Escherichia coli strain BL21(DE3)	Homo sapiens

Crystallization (Commentary)

Crystallization (Comment)	Organism
recombinant mutant R15L isozyme GSTA1-1 complexed with inhibitor S-hexylglutathione, hanging drop vapor diffusion method, 0.002 ml of 14 mg/ml R15L GSTA1-1 in 0.1 M Tris-HCl, pH 7.5, 10 mM DTT, 0.02% sodium azide solution are mixed with 0.002 ml of reservoir buffer containing 5 mM S-hexylglutathione, 0.1 M Tris-HCl, pH 7.5, 10 mM DTT, 5-30% PEG 2000 or 4000, equilibration against 1 ml reservoir solution, 3 days, X-ray diffraction structure determination and analysis at 1.80 A resolution, molecular replacement method	Homo sapiens

Crystallization (Comment)

Organism

recombinant mutant R15L isozyme GSTA1-1 complexed with inhibitor S-hexylglutathione, hanging drop vapor diffusion method, 0.002 ml of 14 mg/ml R15L GSTA1-1 in 0.1 M Tris-HCl, pH 7.5, 10 mM DTT, 0.02% sodium azide solution are mixed with 0.002 ml of reservoir buffer containing 5 mM S-hexylglutathione, 0.1 M Tris-HCl, pH 7.5, 10 mM DTT, 5-30% PEG 2000 or 4000, equilibration against 1 ml reservoir solution, 3 days, X-ray diffraction structure determination and analysis at 1.80 A resolution, molecular replacement method

Homo sapiens

Protein Variants

Protein Variants	Comment	Organism
R15L	site-directed mutagenesis, the mutation substantially diminishes the 1-chloro-2,4-dinitrobenzene-GSH conjugating activity of the enzyme, it has little effect on protein structure and stability	Homo sapiens

Inhibitors

Inhibitors	Comment	Organism	Structure
S-hexylglutathione	binding structure, overview	Homo sapiens

KM Value [mM]

KM Value [mM]	KM Value Maximum [mM]	Substrate	Comment	Organism	Structure
additional information	-	additional information	thermodynamic and molecular docking of wild-type and R15L mutant enzymes, overview	Homo sapiens

Localization

Localization	Comment	Organism	GeneOntology No.	Textmining
cytosol	-	Homo sapiens	5829	-

Organism

Organism	UniProt	Comment	Textmining
Homo sapiens	P08263	isozyme GSTA1-1	-

Purification (Commentary)

Purification (Comment)	Organism
recombinant wild-type and mutant R15L isozyme GSTA1-1 from Escherichia coli strain BL21(DE3) by ion exchange chromatography	Homo sapiens

Substrates and Products (Substrate)

Substrates	Comment Substrates	Organism	Products	Comment (Products)	Rev.
1,3,5-trinitrobenzene + glutathione	an anionic sigma-complex is formed between GSH and 1,3,5-trinitrobenzene and is stabilized by Arg15. The trinitrocyclohexadienate moiety of the sigma-complex binds the H-site where the catalytic residue, Tyr9, was identified to hydrogen bond to an o-nitro group of the sigma-complex	Homo sapiens	S-(2,4,6-trinitrocyclohexa-2,5-dien-1-yl)glutathione	-	?
glutathione + 1-chloro-2,4-dinitrobenzene	SNAr reaction between GSH and 1-chloro-2,4-dinitrobenzene. Role of Arg15 in the binding and activation of GSH and in sigma-complex formation, overview	Homo sapiens	S-(2,4-dinitrophenyl)glutathione + HCl	-	?
additional information	Arg15, conserved in class alpha GSTs, is located at the interface between the G- and H-sites of the active site where its cationic guanidinium group might play a role in catalysis and ligand binding. Binding of the anionic non-substrate ligand 8-anilino-1-naphthalene sulfonate to the H-site involving residue Arg15. The sigma-complex 5-(2,4,6-trinitrocyclohexa-2,5-dien-1-yl)glutathione is an analogue of the anionic transition state of the SNAr reaction between S-(2,4-dinitrophenyl)glutathione and GSH, docking structure, overview	Homo sapiens	?	-	?

Subunits

Subunits	Comment	Organism
dimer	-	Homo sapiens

Synonyms

Synonyms	Comment	Organism
alpha GST	-	Homo sapiens
glutathione transferase A1-1	-	Homo sapiens

Temperature Optimum [°C]

Temperature Optimum [°C]	Temperature Optimum Maximum [°C]	Comment	Organism
20	-	assay at	Homo sapiens

pH Optimum

pH Optimum Minimum	pH Optimum Maximum	Comment	Organism
6.5	-	assay at	Homo sapiens