7z5k

Transcription factor MYF5 bound to non-symmetrical site

spinqualitylabelsall models 7z5k, resolution 2.28Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7z5k is a 4 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.28Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Disease MYF5_HUMAN The disease is caused by variants affecting the gene represented in this entry. Function MYF5_HUMAN Transcriptional activator that promotes transcription of muscle-specific target genes and plays a role in muscle differentiation (PubMed:29887215). Together with MYOG and MYOD1, co-occupies muscle-specific gene promoter core region during myogenesis. Induces fibroblasts to differentiate into myoblasts. Probable sequence specific DNA-binding protein. Publication Abstract from PubMed Transcription factors (TFs) recognize specific bases within their DNA-binding motifs, with each base contributing nearly independently to total binding energy. However, the energetic contributions of particular dinucleotides can deviate strongly from the additive approximation, indicating that some TFs can specifically recognize DNA dinucleotides. Here we solved high-resolution (<1 A) structures of MYF5 and BARHL2 bound to DNAs containing sets of dinucleotides that have different affinities to the proteins. The dinucleotides were recognized either enthalpically, by an extensive water network that connects the adjacent bases to the TF, or entropically, by a hydrophobic patch that maintained interfacial water mobility. This mechanism confers differential temperature sensitivity to the optimal sites, with implications for thermal regulation of gene expression. Our results uncover the enigma of how TFs can recognize more complex local features than mononucleotides and demonstrate that water-mediated recognition is important for predicting affinities of macromolecules from their sequence. Interfacial water confers transcription factors with dinucleotide specificity.,Morgunova E, Nagy G, Yin Y, Zhu F, Nayak SP, Xiao T, Sokolov I, Popov A, Laughton C, Grubmuller H, Taipale J Nat Struct Mol Biol. 2025 Jan 3. doi: 10.1038/s41594-024-01449-6. PMID:39753777 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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