GSTZ1

This gene is a member of the glutathione S-transferase (GSTs) super-family which encodes multifunctional enzymes important in the detoxification of electrophilic molecules, including carcinogens, mutagens, and several therapeutic drugs, by conjugation with glutathione. This enzyme catalyzes the conversion of maleylacetoacetate to fumarylacetoacatate, which is one of the steps in the phenylalanine/tyrosine degradation pathway. Deficiency of a similar gene in mouse causes oxidative stress. Several transcript variants of this gene encode multiple protein isoforms. [provided by RefSeq, Jul 2015]

Glutathione S-Transferase Zeta 1

Bifunctional enzyme showing minimal glutathione-conjugating activity with ethacrynic acid and 7-chloro-4-nitrobenz-2-oxa-1,3-diazole and maleylacetoacetate isomerase activity. Has also low glutathione peroxidase activity with T-butyl and cumene hydroperoxides. Is able to catalyze the glutathione dependent oxygenation of dichloroacetic acid to glyoxylic acid.

Glutathione metabolic process Source: UniProtKB
L-phenylalanine catabolic process Source: GO_Central
Tyrosine catabolic process Source: UniProtKB-KW

Cytoplasm

Maleylacetoacetate isomerase deficiency (MAAID):
An autosomal recessive inborn error of metabolism characterized by mild elevations in succinylacetone in blood and urine, usually identified by newborn screening. Liver function and coagulation are normal. MAAID is a benign disorder.