Abstract
NAP-1 fold histone chaperones play an important role in escorting histones to and from sites of nucleosome assembly and disassembly. The two NAP-1 fold histone chaperones in budding yeast, Vps75 and Nap1, have previously been crystalized in a characteristic homodimeric conformation. In this study, a combination of small angle X-ray scattering, multi angle light scattering and pulsed electron-electron double resonance approaches were used to show that both Vps75 and Nap1 adopt ring-shaped tetrameric conformations in solution. This suggests that the formation of homotetramers is a common feature of NAP-1 fold histone chaperones. The tetramerisation of NAP-1 fold histone chaperones may act to shield acidic surfaces in the absence of histone cargo thus providing a 'self-chaperoning' type mechanism.
| Original language | English |
|---|---|
| Pages (from-to) | 6038-6051 |
| Number of pages | 14 |
| Journal | Nucleic Acids Research |
| Volume | 42 |
| Issue number | 9 |
| Early online date | 31 Mar 2014 |
| DOIs | |
| Publication status | Published - 2014 |
Keywords
- Nucleosome assembly protein-1
- Angle scattering data
- X-ray-scattering
- Acetyltransferase Rtt109
- Saccharomyces-cerevisiae
- Transcription elongation
- In-vitro
- Complexes
- Acetylation
- Association
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