ERBB4/HER4 Potentiates STAT5A Transcriptional Activity by Regulating Novel STAT5A Serine Phosphorylation Events
نویسندگان
چکیده
منابع مشابه
Serine phosphorylation of GH-activated signal transducer and activator of transcription 5a (STAT5a) and STAT5b: impact on STAT5 transcriptional activity.
Signal transducer and activator of transcription 5b (STAT5b), the major liver-expressed STAT5 form, is phosphorylated on both tyrosine and serine in GH-stimulated cells. Although tyrosine phosphorylation is known to be critical for the dimerization, nuclear translocation, and activation of STAT5b DNA-binding and transcriptional activities, the effect of STAT5b serine phosphorylation is uncertai...
متن کاملSerine phosphorylation of the Stat5a C-terminus is a driving force for transformation.
Persistent tyrosine phosphorylation of Stat3 and Stat5 is associated with oncogenic activity. Phosphorylation of the conserved tyrosine residue (pTyr) was long believed to be the only essential prerequisite to promote activation and nuclear translocation of Stat proteins. It has become evident, however, that post-translational protein modifications like serine phosphorylation, acetylation, glyc...
متن کاملEscorting STAT5A
ome transcription factors take a chaperone to the nuclear dance. On page 469, Williams et al. show that STAT5A gets this escort from the ERBB4 receptor tyrosine kinase. ERBB4 becomes an escort upon activation by growth factors such as heregulin (HRG). The activated receptor is known to recruit and phos-phorylate STAT5A and get cleaved, thus releasing ERBB4's intracellular domain (4ICD). William...
متن کاملNonredundant roles for Stat5a/b in directly regulating Foxp3.
Stats (signal transducers and activators of transcription) regulate multiple aspects of T-cell fate. T regulatory (Treg) cells are a critical subset that limits immune responses, but the relative importance of Stat5a/b versus Stat3 for Treg cell development has been contentious. We observed that peripheral CD25(+)CD4(+) T cells were reduced in Stat5(DeltaN) mice; however, the levels of Foxp3, a...
متن کاملInterleukin-2 family cytokines stimulate phosphorylation of the Pro-Ser-Pro motif of Stat5 transcription factors in human T cells: resistance to suppression of multiple serine kinase pathways.
Signal transducer and activator of transcription (Stat)5a and Stat5b are critical for normal immune function. Progression of T cells through G(1)-S phase of cell cycle requires T cell receptor (TCR)- and/or cytokine-inducible tyrosine phosphorylation of Stat5a/b. Stat5a/b may also, in a cell-dependent manner, be constitutively or cytokine-inducibly phosphorylated on a Pro-Ser-Pro (PSP) motif lo...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 2005
ISSN: 0021-9258
DOI: 10.1074/jbc.m414044200