2.6.1.13 ornithine aminotransferase; ornithine delta-transaminase; L-ornithine:alpha-ketoglutarate delta-aminotransferase; OAT; L-ornithine 5-aminotransferase; L-ornithine aminotransferase; ornithine 5-aminotransferase; ornithine transaminase; ornithine-alph • • •