Extract from cultured mammalian cell, process for preparation thereof and method of cell-free protein synthesis using the extract

Abstract

A method for preparing a cultured mammalian cell extract liquid, comprising at least the step of rapidly freezing a cultured mammalian cell suspended in a solution for extraction; a cultured mammalian cell extract liquid prepared by the process; and a method for cell-free protein synthesis using the extract liquid. Preferably, the method for cell-free protein synthesis comprises the step of prior to conducting of synthetic reaction, effecting incubation of a reaction liquid for cell-free protein synthesis in a state of containing components other than exogenous mRNA for a specified period of time.

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