Characterization ofcis-Acting Elements of the Gene forMacrophage-stimulating Proteinfrom the Human

作者: Atsuhisa Ueda , Teizo Yoshimura

DOI: 10.1074/JBC.271.34.20265

关键词: Molecular biologyMessenger RNATranscription (biology)Electrophoretic mobility shift assayPromoterBase pairBiologyCAAT boxGeneCell typeCell biologyBiochemistry

摘要: To analyze the promotor region of human macrophage-stimulating protein (MSP) gene, 5′-flanking this gene was cloned. The major initiation site determined at T located 49 base pairs upstream translation by primer extention with mRNA from HepG2 and Hep3B cells. There no TATA sequence in region. Transient transfection assay 5′-deletion constructs showed that transcription regulated positive negative regulatory elements (PRE NRE). PRE (−34 to +2) essential for maximal NRE (−141 −34) appeared be responsible tissue-specific expression gene. contained CCAAT a mutation CTGAT resulted significant loss transcriptional activity. Electrophoretic mobility shift suggested two different proteins bound (MSP-PRE-binding protein-1 (MSP-PREB1) 2). MSP-PREB1 2 were detected various cell types, involved these bindings. These findings indicate are regulators. Further characterization also revealed MSP-PREB2 identical binding factor, known as NF-Y.

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