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Ribosomes are an integral part of cellular life. They are complex molecular machines consisting of multiple ribosomal proteins and RNAs. To study different aspects of ribosome composition, many methods have been developed over the decades. Here, we describe how to purify ribosomes from the α-proteobacterium Rhodopseudomonas palustris. Following this protocol, RNA can be extracted from either purified ribosomes or directly from cell cultures, and ribosomal RNAs quantified using Northern blot. This protocol gives an example of studying ribosomes in a bacterium other than the commonly used E. coli. The challenge of performing Northern blots with rRNA is also addressed in detail. Copyright © 2020 The Authors; exclusive licensee Bio-protocol LLC.


Liang Yin, Caroline S Harwood. Ribosome Purification from an α-proteobacterium and rRNA Analysis by Northern Blot. Bio-protocol. 2020 Dec 05;10(23):e3835

PMID: 33659484

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