Readers should cite both the Bio-protocol preprint and the original research article where this protocol was used:

Fanning, S(2020). Protein expression for crystal generation. Bio-protocol Preprint. bio-protocol.org/prep538.
Fanning, S. W., Mayne, C. G., Dharmarajan, V., Carlson, K. E., Martin, T. A., Novick, S. J., Toy, W., Green, B., Panchamukhi, S., Katzenellenbogen, B. S., Tajkhorshid, E., Griffin, P. R., Shen, Y., Chandarlapaty, S., Katzenellenbogen, J. A. and Greene, G. L.(2016). Estrogen receptor alpha somatic mutations Y537S and D538G confer breast cancer endocrine resistance by stabilizing the activating function-2 binding conformation. eLIFE. DOI: 10.7554/eLife.12792