Author:
Green Michael R.,Sambrook Joseph
Abstract
A typical mammalian cell contains ∼10−5 µg of RNA, 80%–85% of which is ribosomal RNA (rRNA; chiefly the 28S, 18S, 5.8S, and 5S species). Most of the remaining 15%–20% consists of a variety of low-molecular-weight species (e.g., transfer RNAs [tRNAs] and small nuclear RNAs). These abundant RNAs are of defined size and sequence. In contrast, messenger RNA (mRNA), which makes up between 1% and 5% of the total cellular RNA, is heterogeneous in both size—from a few hundred bases to many kilobases in length—and sequence. In this introduction, the development and use of monophasic lysis reagents for the isolation of total RNA from eukaryotic cells is discussed.
Publisher
Cold Spring Harbor Laboratory
Subject
General Biochemistry, Genetics and Molecular Biology
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