In addition, there are several MAPKs in both fungi and animals, whose origins are less clear, either due to high divergence (e.g. NLK), or due to possibly being an early offshoot to the entire MAPK family (ERK3, ERK4, ERK7).
Ademais, hai varias MAPK en fungos e animais cuxas orixes non están claras, xa sexa debido á alta diverxencia (por exemplo, NLK), xa sexa por ser posiblemente unha rama temperán de toda a familia MAPK (ERK3, ERK4, ERK7).