Presence of ornithine ketoacid aminotransferase in human ocular tissues

  • T. Shiono
  • S. Hayasaka
  • K. Mizuno


Ornithine ketoacid aminotransferase activity in the human ocular tissues was biochemically studied. The choroid plus retina, ciliary body, and iris showed high enzyme activity. The enzyme had a pH optimum at near 8.0–8.1, and the Km value for pyridoxal phosphate was 8 μM. The possible role of ornithine ketoacid aminotransferase in the human ocular tissues was discussed.


Public Health Enzyme Phosphate Enzyme Activity Retina 
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Copyright information

© Springer-Verlag GmbH & Co. KG 1982

Authors and Affiliations

  • T. Shiono
    • 1
  • S. Hayasaka
    • 1
  • K. Mizuno
    • 1
  1. 1.Department of OphthalmologyTohoku University, School of MedicineSendai, MiyagiJapan

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