2.3.1.254 N-terminal methionine Nalpha-acetyltransferase NatB CAL-62 cell - 740011 2.3.1.255 N-terminal amino-acid Nalpha-acetyltransferase NatA CAL-62 cell - 702870 2.3.1.256 N-terminal methionine Nalpha-acetyltransferase NatC CAL-62 cell - 741001, 756225, 756860 2.7.11.21 polo kinase CAL-62 cell anaplastic thyroid carcinoma cell line 703018