Linker histone H1 needs chaperone protein to bind DNA
Researchers at The Ohio State University found that linker histone H1 requires a chaperone protein to reach its target inside cells.
Protein movement before binding
Scientists observed that the H1 protein moves around the cell without a specific destination. This wandering continues even when the protein is near its intended nucleosome target.
Role of chaperone escort
The H1 protein attaches to two DNA strands but cannot secure itself to the nucleosome center alone. A separate chaperone protein must guide the histone to the correct location for it to bind.
Single-molecule observation method
The research team utilized single-molecule experiments to track individual molecular motions and interactions in real time. Senior author Michael Poirier noted that these studies allow scientists to watch dynamic processes directly.
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