ATPase histone chaperone YTA7

UniProtKB accession:  P40340

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UniProtKB description:  Functions as an ATP-dependent nucleosome disassembly factor that helps evict canonical histone H3 from the 5'-end of genes upon their induction (PubMed:25406467). Also contributes to kinetochore assembly by cooperating with SCM3 to load the histone H3 variant CSE4/CENP-A at centromeres (PubMed:32079723). Provides a chromatin boundary function at the 5'-end of genes that restricts access by RTT106 and thus prevents ectopic spreading of repressive chromatin into coding regions (PubMed:19683497, PubMed:25406467, PubMed:22156209). Also prevents heterochromatin spreading downstream of the silent mating-type locus HMR, this function is independent of the tRNA boundary element (PubMed:16079223). Contributes to appropriate cell cycle regulation of histone gene expression by recruiting RNA polymerase II to histone genes, and subsequent CDK1- and casein kinase II-dependent eviction from chromatin is required to promote transcriptional elongation (PubMed:22156209).