PEBP1 binds activated RAF1
收藏reactome.org2025-01-09 收录
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PEBP1, also known as RKIP (Raf kinase inhibitor protein), is a negative regulator of RAF1 that binds to the phosphorylated NtA region and prevents activation of MAP2K substrates (Yeung et al, 1999; Yeung et al, 2000; Rath et al, 2008; Park et al, 2006; reviewed in Lorenz et al, 2014). Relief of this PEBP1 repression of RAF1 activity is stimulated by phosphorylation of PEBP1, which promotes it dissociation from RAF1. Candidate kinases for phosphorylation of PEBP1 include PKC and the MAPKs themselves, which would establish a positive feedback loop stimulating MAPK pathway activity (Corbit et al, 2003; Cho et al, 2003; Shin et al, 2009).
PEBP1,亦称RKIP(Raf激酶抑制蛋白),是RAF1的负向调控因子,能够与磷酸化的NtA区域结合,从而抑制MAP2K底物的激活(Yeung等人,1999年;Yeung等人,2000年;Rath等人,2008年;Park等人,2006年;参见Lorenz等人,2014年综述)。PEBP1对RAF1活性的抑制缓解由PEBP1的磷酸化所激发,这促使PEBP1从RAF1上解离。潜在的PEBP1磷酸化激酶包括PKC以及MAPK家族自身,这将形成一个正向反馈循环,刺激MAPK途径的活性(Corbit等人,2003年;Cho等人,2003年;Shin等人,2009年)。
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