ArticlebioRxiv : the preprint server for biology2024
Nap1 and Kap114 co-chaperone H2A-H2B and facilitate targeted histone release in the nucleus.
Article in bioRxiv : the preprint server for biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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5 authors at 1 institution in 1 country.
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Abstract
Core histones are synthesized and processed in the cytoplasm before transport into the nucleus for assembly into nucleosomes; however, they must also be chaperoned as free histones are toxic. The importin Kap114 binds and transports histone H2A-H2B into the yeast nucleus, where RanGTP facilitates H2A-H2B release. Kap114 and H2A-H2B also bind the Nap1 histone chaperone, which is found in both the cytoplasm and the nucleus, but how Nap1 and Kap114 cooperate in H2A-H2B processing and nucleosome assembly has been unclear. To understand these mechanisms, we used biochemical and structural analyses to reveal how Nap1, Kap114, H2A-H2B and RanGTP interact. We show that Kap114, H2A-H2B and a Nap1 dimer (Nap1
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