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1 September 2010 Why Does Insect RNA Look Degraded?
Eva C. Winnebeck, Craig D. Millar, Guy R. Warman
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Abstract

The integrity of extracted ribonucleic acid (RNA) is commonly assessed by gel electrophoresis and subsequent analysis of the ribosomal RNA (rRNA) bands. Using the honey bee, Apis mellifera (Hymenoptera: Apidae), as an example, the electrophoretic rRNA profile of insects is explained. This profile differs significantly from the standard benchmark since the 28S rRNA of most insects contains an endogenous “hidden break.” Upon denaturation, the masking hydrogen bonds are disrupted, releasing two similar sized fragments that both migrate closely with 18S rRNA. The resulting rRNA profile thus reflects the endogenous composition of insect rRNA and should not be misinterpreted as degradation.

This is an open access paper. We use the Creative Commons Attribution 3.0 license that permits unrestricted use, provided that the paper is properly attributed.
Eva C. Winnebeck, Craig D. Millar, and Guy R. Warman "Why Does Insect RNA Look Degraded?," Journal of Insect Science 10(159), 1-7, (1 September 2010). https://doi.org/10.1673/031.010.14119
Received: 14 April 2009; Accepted: 1 June 2009; Published: 1 September 2010
KEYWORDS
bioanalyzer
electrophoresis
hidden break
honey bee
ribosomal RNA
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