MAP/microtubule affinity-regulating kinase 4 (MARK4)

Serine/threonine-protein kinase (PubMed:15009667, PubMed:14594945, PubMed:23666762, PubMed:23184942).

Phosphorylates the microtubule-associated protein MAPT/TAU (PubMed:14594945, PubMed:23666762).

Also phosphorylates the microtubule-associated proteins MAP2 and MAP4 (PubMed:14594945). Involved in regulation of the microtubule network, causing reorganization of microtubules into bundles (PubMed:14594945, PubMed:25123532).