8VG0
Cryo-EM structure of GATA4 in complex with ALBN1 nucleosome
Summary for 8VG0
| Entry DOI | 10.2210/pdb8vg0/pdb |
| EMDB information | 43196 |
| Descriptor | DNA (159-MER), Histone H3.1, Histone H4, ... (8 entities in total) |
| Functional Keywords | nucleosome, pioneer transcription factors, dna binding proteins, transcription, chromatin, nuclear protein, nuclear protein-dna complex, nuclear protein/dna |
| Biological source | Homo sapiens (human) More |
| Total number of polymer chains | 11 |
| Total formula weight | 312637.84 |
| Authors | Zhou, B.R.,Bai, Y. (deposition date: 2023-12-22, release date: 2024-08-07, Last modification date: 2024-09-11) |
| Primary citation | Zhou, B.R.,Feng, H.,Huang, F.,Zhu, I.,Portillo-Ledesma, S.,Shi, D.,Zaret, K.S.,Schlick, T.,Landsman, D.,Wang, Q.,Bai, Y. Structural insights into the cooperative nucleosome recognition and chromatin opening by FOXA1 and GATA4. Mol.Cell, 84:3061-, 2024 Cited by PubMed Abstract: Mouse FOXA1 and GATA4 are prototypes of pioneer factors, initiating liver cell development by binding to the N1 nucleosome in the enhancer of the ALB1 gene. Using cryoelectron microscopy (cryo-EM), we determined the structures of the free N1 nucleosome and its complexes with FOXA1 and GATA4, both individually and in combination. We found that the DNA-binding domains of FOXA1 and GATA4 mainly recognize the linker DNA and an internal site in the nucleosome, respectively, whereas their intrinsically disordered regions interact with the acidic patch on histone H2A-H2B. FOXA1 efficiently enhances GATA4 binding by repositioning the N1 nucleosome. In vivo DNA editing and bioinformatics analyses suggest that the co-binding mode of FOXA1 and GATA4 plays important roles in regulating genes involved in liver cell functions. Our results reveal the mechanism whereby FOXA1 and GATA4 cooperatively bind to the nucleosome through nucleosome repositioning, opening chromatin by bending linker DNA and obstructing nucleosome packing. PubMed: 39121853DOI: 10.1016/j.molcel.2024.07.016 PDB entries with the same primary citation |
| Experimental method | ELECTRON MICROSCOPY (3.07 Å) |
Structure validation
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