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Updated: Aug 9, 2026
Purification of Native Complexes for Structural Study Using a Tandem Affinity Tag Method
Published on: July 27, 2016
Purification, crystallization and preliminary X-ray diffraction analysis of yeast nucleosome-assembly factor Cia1p
Balasundaram Padmanabhan1, Kazuhiro Kataoka, Naruhiko Adachi
1Horikoshi Gene Selector Project, Exploratory Research for Advanced Technology (ERATO), Japan Science and Technology Corporation (JST), 5-9-6 Tokodai, Tsukuba, Ibaraki 300-2635, Japan.
Abstract:
Yeast Cia1p is a homologue of human CIA (CCG1-interacting factor A), which possesses nucleosome-assembly activity and interacts with the human TFIID subunit CCG1 and the C-terminal domain of histone H3. The yeast Cia1p without the C-terminal polyanionic stretch has been expressed in Escherichia coli, purified to homogeneity and crystallized by the hanging-drop vapour-diffusion method using PEG 8000 as precipitant. The protein was crystallized in orthorhombic space group P2(1)2(1)2(1), with unit-cell parameters a = 106.70, b = 46.92, c = 40.60 A and one molecule in the asymmetric unit. The crystal diffracted beyond 2.95 A resolution using synchrotron radiation.
