在普通结晶试剂添加硫酸铵和盐

Cryo for Ammonium sulfate and salt based crystallization reagents   用于硫酸铵和盐基结晶试剂的 Cryo

Increase the concentration of ammonium sulfate (cryosalt) (or primary salt acting as a precipitant) in increments of 10% in the presence of 5 to 10% v/v Glycerol.

Evaluate 25-30% w/v glucose, or trehalose or sucrose as cryoprotectants for crystals grown in Ammonium sulfate. Acta Cryst. (2002). D58, 1664-1669. Crystallization of RNA/protein complexes. M. Garber, G. Gongadze, V. Meshcheryakov, O. Nikonov, A. Nikulin, A. Perederina, W. Piendl, A. Serganov and S. Tishchenko.

15 to 30% v/v Ethylene glycol, DMSO, or Glycerol.

Try 1 – 2 M Sodium malonate as a cryoprotectant. Acta Cryst. (2003). D59, 2356-2358. Malonate: a versatile cryoprotectant and stabilizing solution for salt-grown macromolecular crystals. T. Holyoak, T. D. Fenn, M. A. Wilson, A. G. Moulin, D. Ringe and G. A. Petsko.

Place a drop of 75% v/v Paratone-N, 25% v/v Paraffin Oil next to the drop containing the crystal. Remove the crystal from the drop using a CryoLoop and dip the crystal into the oil. Keeping the CryoLoop and crystal immersed, gently move the CryoLoop containing the crystal from the oil into the reagent, back into the oil, back into the reagent, repeating this several times to remove some of the aqueous (reagent) layer from the crystal surface. Cryo cool the crystal.

在 5 至 10% v/v 甘油存在的情况下,以 10% 的增量增加硫酸铵(冰晶盐)(或用作沉淀剂的初级盐)的浓度。

评估 25-30% w/v 葡萄糖、海藻糖或蔗糖作为在硫酸铵中生长的晶体的冷冻保护剂。晶体学报。 (2002 年)。 D58,1664-1669。 RNA/蛋白质复合物的结晶。 M. Garber、G. Gongadze、V. Meshcheryakov、O. Nikonov、A. Nikulin、A. Perederina、W. Piendl、A. Serganov 和 S. Tishchenko。

15 至 30% v/v 乙二醇、DMSO 或甘油。

尝试 1 – 2 M 丙二酸钠作为冷冻保护剂。晶体学报。 (2003 年)。 D59,2356-2358。丙二酸盐:一种用于盐生大分子晶体的多功能冷冻保护剂和稳定溶液。 T. Holyoak、T. D. Fenn、M. A. Wilson、A. G. Moulin、D. Ringe 和 G. A. Petsko。

在含有晶体的液滴旁边放置一滴 75% v/v Paratone-N、25% v/v 石蜡油。使用 CryoLoop 从液滴中取出晶体并将晶体浸入油中。保持 CryoLoop 和晶体浸没,轻轻地将含有晶体的 CryoLoop 从油中移入试剂中,再移回油中,再移回试剂中,重复几次以去除晶体表面的一些水(试剂)层。低温冷却晶体。