STAT1 (signal transducer and activator of transcription 1) is a transcription factor that plays important roles in growth arrest, apoptosis promoting and tumour suppression. After ligation of cytokine receptors STAT1 becomes phosphorylated on Tyr701 by Janus kinase JAK1 or JAK2, dimerizes, translocates to nucleus and contacts DNA. STAT1-STAT2 heterodimers serve as more potent transcriptional inducers than STAT1 homodimers. STAT1 is also phosphorylated on Ser727 by MAPK pathway, independently of tyrosine phosphorylation. However, the both modifications are important for its maximal transcriptional activity. On the other hand, STAT1 phosphorylated on Ser727 is targeted for proteasomal degradation.
应用类型
IP, WB
免疫原
STAT1 peptide sequence 8-23 (QLDSKFLEQVHQLYD) conjugated to KLH.
来源宿主
小鼠
反应性
Human
保存建议
Store at 2-8°C. Do not freeze. Do not use after expiration date stamped on the label.
