Complex sentence: KCNB1 rectifiers are also responsible for maintaining cardiac beat and rate synchronicity, lysis of target molecules in the immune response, and can act as effectors in downstream signaling in G-protein coupled receptor transduction.
Split into simpler sentences: KCNB1 rectifiers are also important in forming the cardiac beat and rate synchronicity that exists within the heart, and the lysis of target molecules in the immune response. These channels can also act as effectors in downstream signaling in G-protein coupled receptor transduction.