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Src family: Introduction

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Activation of Src-family kinases leads to both stimulatory and inhibitory signaling responses, with cell-specific and signaling pathway-specific outcomes and redundancy of kinase function.

Immune system:
In immune cells Src kinases are involved in many signalling pathways, including ITAM- and ITIM-domain-containing receptor signaling, integrin signaling, and responses to chemokines/chemoattractants, cytokines, innate immune stimuli and a large variety of non-immune cell specific stimuli (UV irradiation, heat, osmotic shock etc.). In many cases Src kinases signal to MAP kinase or NF-κB pathways, but they can also modulate other pathways through less well characterized mechanisms.

The primary T cell Src kinases are Lck and Fyn; the main B cell Srcs are Lyn, Fyn and Blk. Mast cells express Fyn and Lyn, with low expression of Src.

Citation information

Last modified on 15/11/2018.

The citation format for the published version of this page will be:

Src family, introduction. Last modified on 15/11/2018. Accessed on 12/09/2025. IUPHAR/BPS Guide to PHARMACOLOGY, https://www.guidetopharmacology.org/GRAC/FamilyIntroductionForward?familyId=619.