title: Demonstration of trans-acting factors binding to the promoter region of the testis-specific rat protamine P1 gene.
abstract: Potential regulatory DNA elements within the rat protamine P1 promoter region have been identified using gel retardation assays and DNase I footprinting analysis with rat nuclear extracts obtained from different tissues. Distinctive gel shift bands are generated by rat nuclear extracts from mature testis, kidney, brain, spleen and liver, which bind to the cis-acting SRE (Serum response element) and Prot1C (Protamine 1 Consensus) oligonucleotide sequences [Queralt R. and Oliva R. Gene. 133 (1993) 197-204]. In vitro DNase I footprinting analysis demonstrates protection of the SRE region at positions -124 to -115. In addition, we have detected protection in two new regions adjacent to the SRE that we called SAP (SRE Adjoining Protection; nt -153 to -141) and SEP (SRE Extended Protection; nt-114 to -100), respectively. These sequences, SAP and SEP, show no apparent consensus homology with cis-acting elements of other known transcription factors. Two additional DNase I protected regions have also been found at positions +27 to +46 and +61 to +88, the first of which contains the sequence +42 TCGNNNNNGCCAA +30 recognized by nuclear factor I (NFI).
authors.affiliation: Human Genome and Molecular Genetics Research Group, Faculty of Medicine, University of Barcelona, Spain.
authors.forename: R
authors.initials: R
authors.lastname: Queralt
authors.forename: R
authors.initials: R
authors.lastname: Oliva
mesh_terms: D000818:Animals; D001483:Base Sequence; D004268:DNA-Binding Proteins / Q000378:metabolism; D005786:Gene Expression Regulation; D008297:Male; D008969:Molecular Sequence Data; D009687:Nuclear Proteins / Q000378:metabolism; D011401:Promoter Regions, Genetic; D011479:Protamines / Q000235:genetics*; D051381:Rats; D013737:Testis / Q000378:metabolism; D014018:Tissue Distribution
chemical_list: D004268:DNA-Binding Proteins; D009687:Nuclear Proteins; D011479:Protamines; C046533:protamine P1