Cloning, purification, crystallization and preliminary crystallographic analysis of SecA from Enterococcus faecalis.
نویسندگان
چکیده
The gene coding for SecA from Enterococcus faecalis was cloned and overexpressed in Escherichia coli. In this protein, the lysine at position 6 was replaced by an asparagine in order to reduce sensitivity towards proteases. The modified protein was purified and crystallized. Crystals diffracting to 2.4 A resolution were obtained using the vapour-diffusion technique. The crystals belong to the monoclinic space group C2, with unit-cell parameters a = 203.4, b = 49.8, c = 100.8 A, alpha = gamma = 90.0, beta = 119.1 degrees. A selenomethionine derivative was prepared and is currently being tested in crystallization trials.
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عنوان ژورنال:
- Acta crystallographica. Section F, Structural biology and crystallization communications
دوره 62 Pt 6 شماره
صفحات -
تاریخ انتشار 2006