The histone H3 variant CENP-A defines centromeric chromatin, but it has been unclear how CENP-A is stably maintained at centromeres. It has now been shown that the CENP-A licensing factor HsKNL2 and the small GTPases activating protein MgcRacGAP cooperate to promote the stability of newly loaded CENP-A at centromeres.
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Prendergast, L., Sullivan, K. A GTPase switch maintains CENP-A at centromeric chromatin. Nat Cell Biol 12, 1128–1130 (2010). https://doi.org/10.1038/ncb1210-1128
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DOI: https://doi.org/10.1038/ncb1210-1128