ArticleNucleic acids research2024
New Drosophila promoter-associated architectural protein Mzfp1 interacts with CP190 and is required for housekeeping gene expression and insulator activity.
Article in Nucleic acids research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Transcriptome Analysis of the Larch Bud Gall Midge,International journal of molecular sciences · 2026Article
- Beyond DNA binding: single C2H2 zinc fingers with adjacent β-strands mediate dimerization in Drosophila transcription factors.Nucleic acids research · 2026Article
- Cooperation between architectural C2H2 proteins in CP190 recruitment to Drosophila regulatory elements.Epigenetics & chromatin · 2025Article
- ZAD mediates chromatin binding and insulator activity of Drosophila Pita and can be replaced with the human ZFP276 ZAD-like domain.Epigenetics & chromatin · 2025Article
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7 authors.
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Abstract
In Drosophila, a group of zinc finger architectural proteins recruits the CP190 protein to the chromatin, an interaction that is essential for the functional activity of promoters and insulators. In this study, we describe a new architectural C2H2 protein called Madf and Zinc-Finger Protein 1 (Mzfp1) that interacts with CP190. Mzfp1 has an unusual structure that includes six C2H2 domains organized in a C-terminal cluster and two tandem MADF domains. Mzfp1 predominantly binds to housekeeping gene promoters located in both euchromatin and heterochromatin genome regions. In vivo mutagenesis studies showed that Mzfp1 is an essential protein, and both MADF domains and the CP190 interaction region are required for its functional activity. The C2H2 cluster is sufficient for the specific binding of Mzfp1 to regulatory elements, while the second MADF domain is required for Mzfp1 recruitment to heterochromatin. Mzfp1 binds to the proximal part of the Fub boundary that separates regulatory domains of the Ubx and abd-A genes in the Bithorax complex. Mzfp1 participates in Fub functions in cooperation with the architectural proteins Pita and Su(Hw). Thus, Mzfp1 is a new architectural C2H2 protein involved in the organization of active promoters and insulators in Drosophila.
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