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Crystallization and preliminary crystallographic analysis of the Tob-hCaf1 complex
Kinya Nishida1, Masataka Horiuchi, Nobuo N Noda
1Department of Structural Biology, Graduate School of Pharmaceutical Science, Hokkaido University, N12, W6, Kita-ku, Sapporo 060-0812, Japan.
Abstract:
The Tob/BTG family is a group of antiproliferative proteins that contain two highly homologous regions named Box A and Box B. These proteins all associate with CCR4-associated factor 1 (Caf1), which belongs to the ribonuclease D family of deadenylases. The antiproliferative region of human Tob (residues 1-138) and intact hCaf1 were co-expressed in Escherichia coli, purified and successfully cocrystallized. The crystal belongs to the tetragonal space group I422, with unit-cell parameters a = b = 150.9, c = 113.9 A, and is estimated to contain one heterodimer per asymmetric unit. The crystal diffracted to around 2.6 A resolution.
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