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Review
, 55 (12), 1535-46

Transcription Factor Activity of STAT Proteins: Structural Requirements and Regulation by Phosphorylation and Interacting Proteins

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Review

Transcription Factor Activity of STAT Proteins: Structural Requirements and Regulation by Phosphorylation and Interacting Proteins

T Decker et al. Cell Mol Life Sci.

Abstract

The seven mammalian members of the signal transducer and activator of transcription (STAT) family share a common core structure which reflects their shared mechanism of activation, dimerization, and DNA binding. By contrast, the STAT C termini containing the sequences required for transcriptional activation are much less homologous, suggesting different ways by which individual STATs activate their target genes. This paper describes several important discoveries linked to mechanistic aspects of STAT transcription factor function. These include regulated serine phosphorylation of the transactivating domain, promoter-dependent interactions of STATs with each other, or of STATs with other transcription factors, and with transcriptional co-activators. The basis, background, and implications of these molecular events will be summarized and discussed.

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