Panky, a novel photoreceptor-specific ankyrin repeat protein, is a transcriptional cofactor that suppresses CRX-regulated photoreceptor genes.
[No authors listed]
摘要
Neuronal gene transcription is regulated by both transcriptional activators and repressors. While the roles of transactivators in retinal photoreceptor development have been well characterized, the roles of repressors have been poorly understood. We isolated Panky/Ankrd33, a gene encoding an ankyrin repeat-containing protein. Panky-A was specifically expressed in retinal photoreceptors and the pineal gland, and its expression was directly up-regulated by the CRX transcription factor. Subcellular localization of PANKY-A was observed in the nucleus and cytoplasm. Additionally, transactivation analysis suggested that PANKY-A is a transcriptional cofactor that suppresses CRX-activated photoreceptor genes. Furthermore, we found by an electrophoretic mobility shift assay that PANKY inhibited the DNA-binding activity of CRX.
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基因功能
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原始数据
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文献解读
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