What Are SWI and SNF Proteins? A Complete Guide
                                
                                
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                                    2 min read                                
                            
                                First identified in yeast, the SWI and SNF proteins form a conserved, multi-subunit complex that dynamically remodels chromatin to regulate gene expression. This complex uses the energy from ATP hydrolysis to alter how DNA is packaged, fundamentally controlling which genes are accessible to the cellular machinery.