All tau proteins have long motifs that contain Beta-lactamase hydrolase-like protein phosphatase-like 、 Calcineurin-like phosphoesterase 、 PhoD-like phosphatase metallophosphatase 、 Phosphotyrosine protein phosphatase I 、 Tyrosine specific protein phosphatases and Tyrosine-protein phosphatase domains. Table summarizes this information. The preceding section did not discover tau proteins binding Mg2+-ATP through serine/threonine. According to Table , the presence of a significant number of Tyrosine phosphatase motifs in the tau proteins suggests that they are capable of self-dephosphorylation through Tyrosine phosphatases.