Abstract
We have purified two cationic (pI 7·2 and >10·0) forms of glutathione S-transferase from the bovine cornea through a combination of gel filtration, affinity chromatography, and isoelectric focusing. Both these glutathione S-transferases conjugate glutathione (GSH) to 1-chloro-2,4-dinitrobenzene, have an absolute requirement of GSH as the thiol donor, and do not express selenium-independent glutathione peroxidase activity. The conjugation of GSH to 1-chloro-2,4-dinitrobenzene catalyzed by the less cationic transferase is inhibited by bilirubin. Both glutathione S-transferases of the cornea have a broader spectrum of substrates that are conjugated to GSH than the glutathione S-transferases of bovine lens and retina.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 279-286 |
| Number of pages | 8 |
| Journal | Experimental Eye Research |
| Volume | 35 |
| Issue number | 3 |
| DOIs | |
| State | Published - Sep 1982 |
| Externally published | Yes |
Keywords
- GHS S-transferase
- bovine cornea
- drug detoxification
- purification
ASJC Scopus subject areas
- Ophthalmology
- Sensory Systems
- Cellular and Molecular Neuroscience