Abstract
Histone chaperones are histone interacting proteins that are involved in various stages of histone metabolism in the cell such as histone storage, transport, nucleosome assembly and disassembly. Histone assembly and disassembly are essential processes in certain DNA-templated phenomena such as replication, repair and transcription in eukaryotes. Since the first histone chaperone Nucleoplasmin was discovered in Xenopus, a plethora of histone chaperones have been identified, characterized and their functional significance elucidated in the last 35 years or so. Some of the histone chaperone containing complexes such as FACT have been described to play a significant role in nucleosome disassembly during transcription elongation. We have reported earlier that human Nucleophosmin (NPM1), a histone chaperone belonging to the Nucleoplasmin family, is a co-activator of transcription. In this chapter, we describe several methods that are used to study the histone chaperone activity of proteins and their role in transcription.
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