The type I receptor serine/threonine kinases are also known as activin receptors or activin receptor-like kinases, ALKs, for which a systematic nomenclature has been proposed (ALK1-7).

* Key recommended reading is highlighted with an asterisk

* Batlle E, Massagué J. (2019) Transforming Growth Factor-β Signaling in Immunity and Cancer. Immunity, 50 (4): 924-940. DOI: 10.1016/j.immuni.2019.03.024

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