Abstract
A procedure for fast and simple preparation of cytoplasmic ribonucleic acid from Physarum polycephalum microplasmodia is described. Microplasmodia are homogenized in a high-magnesium-high-ethylene glycol bis(β-aminoethyl ether) N,N′-tetraacetic acid buffer and nuclei are pelleted. The supernatant is extracted with sodium dodecyl sulfate-phenol-chloroform and crude RNA is precipitated. This is further purified by selective ethanol precipitation from 6 m guanidinum hydrochloride. This RNA preparation is suitable for direct use in hybridization studies.
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