Diiodotyrosine transaminase

In enzymology, a diiodotyrosine transaminase (EC 2.6.1.24) is an enzyme that catalyzes the chemical reaction

diiodotyrosine transaminase
Identifiers
EC no.2.6.1.24
CAS no.9033-18-5
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IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
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MetaCycmetabolic pathway
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PDB structuresRCSB PDB PDBe PDBsum
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NCBIproteins
3,5-diiodo-L-tyrosine + 2-oxoglutarate 4-hydroxy-3,5-diiodophenylpyruvate + L-glutamate

Thus, the two substrates of this enzyme are 3,5-diiodo-L-tyrosine and 2-oxoglutarate, whereas its two products are 4-hydroxy-3,5-diiodophenylpyruvate 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 3,5-diiodo-L-tyrosine:2-oxoglutarate aminotransferase. Other names in common use include diiodotyrosine aminotransferase, halogenated tyrosine aminotransferase, and halogenated tyrosine transaminase. It employs one cofactor, pyridoxal phosphate.

References

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  • Nakano M (January 1967). "Purification and properties of halogenated tyrosine and thyroid hormone transaminase from rat kidney mitochondria". The Journal of Biological Chemistry. 242 (1): 73–81. PMID 4381052.
  • Nakano M, Danowski TS (April 1964). "Thyroid-hormone transaminase and oxidase in rat-kidney mitochondria". Biochimica et Biophysica Acta (BBA) - Specialized Section on Enzymological Subjects. 85: 18–28. doi:10.1016/0926-6569(64)90163-4. PMID 14159298.