Figure 1.
The ATM protein kinase. The C-terminal PI3 kinase-like kinase domain (KD), spanning aa ~2712 to 2962, is flanked by the domains FAT (FRAP, ATM and TRRAP; ~ aa 1960 to 2566) and FATC (FRAP, ATM and TRRAP C-terminal; ~ aa 2963 to 3056). The N-terminal region of the FATC domain has also been termed the “PIKK-regulatory domain” [5]. The location of autophosphorylation sites in ATM (S367, S1893, S1981 and S2996) [12, 24, 87] is shown. The N-terminus of ATM is composed of HEAT (Huntingtin, elongation factor 1A, protein phosphatase 2A A-subunit, TOR) repeats [88].