A mitogen-activated protein kinase subfamily that regulates a variety of cellular processes including CELL GROWTH PROCESSES; CELL DIFFERENTIATION; APOPTOSIS; and cellular responses to INFLAMMATION. The P38 MAP kinases are regulated by CYTOKINE RECEPTORS and can be activated in response to bacterial pathogens.

Synonyms: EC 2.7.11.24, p38 Mitogen-Activated Protein Kinase, MAP Kinase, p38, p38 MAPK, p38 SAPK, p38 Protein Kinase, p38 Mitogen Activated Protein Kinase, p38 MAP Kinase, Protein Kinase, p38, p38 Mitogen Activated Protein Kinases, Mitogen Activated Protein Kinase p38, p38 Mitogen-Activated Protein Kinases, MAPK, p38, Mitogen-Activated Protein Kinase p38