ArticleInternational journal of molecular sciences2021
Mechanisms of CP190 Interaction with Architectural Proteins in Drosophila Melanogaster.
Article in International journal of molecular sciences, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- 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
- Article
- New Drosophila promoter-associated architectural protein Mzfp1 interacts with CP190 and is required for housekeeping gene expression and insulator activity.Nucleic acids research · 2024Article
- Development of a New Model System to Study Long-Distance Interactions Supported by Architectural Proteins.International journal of molecular sciences · 2024Article
- Developmental and Housekeeping Genes: Two Types of Genetic Organization in theInternational journal of molecular sciences · 2024Review
- The N-terminal dimerization domains of human and Drosophila CTCF have similar functionality.Epigenetics & chromatin · 2024Article
- Study of the Association of Ouib and Nom with Heterochromatin in Drosophila melanogaster.Doklady. Biochemistry and biophysics · 2023Article
- Multiple Roles of dXNP and dADD1-International journal of molecular sciences · 2023Review
- The N-Terminal Part ofInternational journal of molecular sciences · 2023Article
- The MADF-BESS Protein CP60 Is Recruited to Insulators via CP190 and Has Redundant Functions inInternational journal of molecular sciences · 2023Article
- Study of the in Vivo Functional Role of Mutations in the BTB Domain of the CP190 Protein of Drosophila melanogaster.Doklady. Biochemistry and biophysics · 2023Article
- Proximity labeling reveals a new in vivo network of interactors for the histone demethylase KDM5.Epigenetics & chromatin · 2023Article
- Mechanisms of Interaction between Enhancers and Promoters in ThreeInternational journal of molecular sciences · 2023Review
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Authors and funding
9 authors.
Funding
Abstract
Most of the known Drosophila architectural proteins interact with an important cofactor, CP190, that contains three domains (BTB, M, and D) that are involved in protein-protein interactions. The highly conserved N-terminal CP190 BTB domain forms a stable homodimer that interacts with unstructured regions in the three best-characterized architectural proteins: dCTCF, Su(Hw), and Pita. Here, we identified two new CP190 partners, CG4730 and CG31365, that interact with the BTB domain. The CP190 BTB resembles the previously characterized human BCL6 BTB domain, which uses its hydrophobic groove to specifically associate with unstructured regions of several transcriptional repressors. Using GST pull-down and yeast two-hybrid assays, we demonstrated that mutations in the hydrophobic groove strongly affect the affinity of CP190 BTB for the architectural proteins. In the yeast two-hybrid assay, we found that architectural proteins use various mechanisms to improve the efficiency of interaction with CP190. Pita and Su(Hw) have two unstructured regions that appear to simultaneously interact with hydrophobic grooves in the BTB dimer. In dCTCF and CG31365, two adjacent regions interact simultaneously with the hydrophobic groove of the BTB and the M domain of CP190. Finally, CG4730 interacts with the BTB, M, and D domains of CP190 simultaneously. These results suggest that architectural proteins use different mechanisms to increase the efficiency of interaction with CP190.
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