BAIT
NAP1
histone chaperone NAP1, L000001232, YKR048C
Histone chaperone; involved in histone exchange by removing and replacing histone H2A-H2B dimers or histone variant dimers from assembled nucleosomes; involved in the transport of H2A and H2B histones to the nucleus; required for the regulation of microtubule dynamics during mitosis; interacts with mitotic cyclin Clb2p; controls bud morphogenesis; phosphorylated by CK2; protein abundance increases in response to DNA replication stress
GO Process (7)
GO Function (3)
GO Component (2)
Gene Ontology Biological Process
- budding cell bud growth [IGI, IMP]
- nucleosome assembly [IDA, ISS]
- nucleosome disassembly [IDA]
- positive regulation of catalytic activity [IDA]
- positive regulation of microtubule polymerization [IMP]
- positive regulation of transcription elongation from RNA polymerase II promoter [IDA]
- protein import into nucleus [IMP]
Gene Ontology Molecular Function
Saccharomyces cerevisiae (S288c)
PREY
VPS75
YNL246W
NAP family histone chaperone; binds to histones and Rtt109p, stimulating histone acetyltransferase activity; possesses nucleosome assembly activity in vitro; proposed role in vacuolar protein sorting and in double-strand break repair; protein abundance increases in response to DNA replication stress; relocalizes to the cytosol in response to hypoxia
GO Process (3)
GO Function (2)
GO Component (3)
Gene Ontology Biological Process
Gene Ontology Molecular Function
Saccharomyces cerevisiae (S288c)
Synthetic Growth Defect
A genetic interaction is inferred when mutations in separate genes, each of which alone causes a minimal phenotype, result in a significant growth defect under a given condition when combined in the same cell.
Publication
Interaction with the histone chaperone Vps75 promotes nuclear localization and HAT activity of Rtt109 in vivo.
Modification of histones is critical for the regulation of all chromatin-templated processes. Yeast Rtt109 is a histone acetyltransferase (HAT) that acetylates H3 lysines 9, 27 and 56. Rtt109 associates with and is stabilized by Nap1 family histone chaperone Vps75. Our data suggest Vps75 and Nap1 have some overlapping functions despite their different cellular localization and histone binding specificity. We determined ... [more]
Unknown Apr. 04, 2011; 0(0); [Pubmed: 21463458]
Throughput
- Low Throughput
Ontology Terms
- vegetative growth (APO:0000106)
- resistance to chemicals (APO:0000087)
Additional Notes
- double mutants show reduced growth at 37 degrees, in the presence of HU or in the absence of inositol
Curated By
- BioGRID