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- W2045294448 abstract "The pre-T cell receptor α (pTα) protein is a critical component of the pre-T cell receptor complex in early thymocytes. The expression of the pTα gene is one of the earliest markers of the T cell lineage and occurs exclusively in pre-T cells. To investigate the molecular basis of thymocyte-specific gene expression, we searched for the genomic elements regulating transcription of the mouse pTα gene. We now report that expression of the pTα gene is primarily controlled by an upstream genomic region, which can drive thymocyte-specific expression of a marker gene in transgenic mice. Within this region, we have identified two specific DNase-hypersensitive sites corresponding to a proximal promoter and an upstream transcriptional enhancer. The pTα enhancer appears to function preferentially in pre-T cell lines and binds multiple nuclear factors, including YY1. The enhancer also contains two G-rich stretches homologous to a critical region of the thymocyte-specific lck proximal promoter. Here we show that these sites bind a common nuclear factor and identify it as the zinc finger protein ZBP-89. Our data establish a novel experimental model for thymocyte-specific gene expression and suggest an important role for ZBP-89 in T cell development." @default.
- W2045294448 created "2016-06-24" @default.
- W2045294448 creator A5004192129 @default.
- W2045294448 creator A5070752173 @default.
- W2045294448 date "1999-05-17" @default.
- W2045294448 modified "2023-10-11" @default.
- W2045294448 title "Expression of the Mouse Pre-T Cell Receptor α Gene Is Controlled by an Upstream Region Containing a Transcriptional Enhancer" @default.
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- W2045294448 doi "https://doi.org/10.1084/jem.189.10.1669" @default.
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