Description
The protein encoded by this gene catalyzes the formation of 5-oxoproline from gamma-glutamyl dipeptides, the penultimate step in glutathione catabolism, and may play a critical role in glutathione homeostasis. The encoded protein may also play a role in cell proliferation, and the expression of this gene is a potential marker for cancer. Pseudogenes of this gene are located on the long arm of chromosome 5 and the short arm of chromosomes 2 and 20. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene.
Bio-activity
Measured by its ability to release L-alanine from gamma-glutamyl-L-alanine, with the detection of alanine by alanine dehydrogenase. The specific activity is >40,000 pmol/min/μg, as measured under the described conditions.
Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
6 months from date of receipt, -70 centigrade as supplied.
3 months, -70 centigrade under sterile conditions after opening.
