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In enzymology, a cysteine-conjugate transaminase (EC 2.6.1.75) is an enzyme that catalyzes the chemical reaction

S-(4-bromophenyl)-L-cysteine + 2-oxoglutarate ${\displaystyle \rightleftharpoons }$ S-(4-bromophenyl)mercaptopyruvate + L-glutamate

Thus, the two substrates of this enzyme are S-(4-bromophenyl)-L-cysteine and 2-oxoglutarate, whereas its two products are S-(4-bromophenyl)mercaptopyruvate and L-glutamate.

This enzyme belongs to the family of transferases, specifically the transaminases, which transfer nitrogenous groups. The systematic name of this enzyme class is S-(4-bromophenyl)-L-cysteine:2-oxoglutarate aminotransferase. Other names in common use include cysteine conjugate aminotransferase, and cysteine-conjugate alpha-ketoglutarate transaminase (CAT-1).

References

• Tomisawa H, Ichimoto N, Takanohashi Y, Ichihara S, Fukazawa H, Tateishi M (September 1988). "Purification and characterization of cysteine conjugate transaminases from rat liver". Xenobiotica; The Fate of Foreign Compounds in Biological Systems. 18 (9): 1015–28. doi:10.3109/00498258809042224. PMID 2852419.

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