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Zinc-finger domains of the transcriptional repressor KLF15 bind multiple sites in rhodopsin and IRBP promoters including the CRS-1 and G-rich repressor elements

Deborah C Otteson1,2,4 email, Hong Lai2,5 email, Yuhui Liu2 email and Donald J Zack1,2,3 email

1Guerrieri Center for Genetic Engineering and Molecular Ophthalmology at the Wilmer Eye Institute, Johns Hopkins University School of Medicine; 600 North Wolfe Street; Baltimore, MD 21287 USA

2Department of Ophthalmology, Johns Hopkins University School of Medicine; 600 North Wolfe Street; Baltimore, MD 21287 USA

3Departments of Neuroscience, and Molecular Biology and Genetics; Johns Hopkins University School of Medicine; 600 North Wolfe Street; Baltimore, MD 21287 USA

4College of Optometry, University of Houston; Houston, TX 77204 USA

5Department of Genetics, Stanford University School of Medicine; Stanford, CA 94305 USA

author email corresponding author email

BMC Molecular Biology 2005, 6:15doi:10.1186/1471-2199-6-15

Published: 17 June 2005

Additional files

Additional File 1:

Supplemental Data Files (Otteson SupplementalData.doc) containing full results of analysis of KFL15 binding sites using Target Explorer. Included in this data set are: 1. Sequences from bovine rhodopsin and IRBP promoters protected by KLF15-gst fusion proteins in DNAseI footprint analysis used as "training set" for Target Explorer. 2. List of top matrices for KLF15_9bpsite_otteson binding site. (sorted by information content): Assume 9 bp binding site and 60% AT/40% GC in genome. 3. Analysis to determine cutoff score for identification of KLF15 binding sites. Sequences and scores for bRho29, hRho29 and bRho29-mutations oligonucleotides used in competitive EMSA. Lists of putative binding sites in these oligos identified using Matrices 1–4: cut-off score = 1 indicating good and poor competitors. 4. List of top matrices for KLF15: Assume unknown binding site length and 60% T/40% GC in genome. 5. Analysis to determine cutoff score for identification of KLF15 binding sites assuming unknown binding site length. Sequences and scores for bRho29, hRho29 and bRho29-mutations oligonucleotides used in competitive EMSA. Lists of putative binding sites in these oligos identified using Matrices 1–4: cut-off score = 1 indicating good and poor competitors. 6. Identification of potential KLF15 binding sites in rhodopsin and IRBP promoters using matrix 2 with 9 bp binding site (cut-off score 4.87). Promoter sequences analyzed. Predicted binding sites

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