Nucleic Acids Research, Vol 24, Issue 17 3472-3473, Copyright © 1996 by Oxford University Press
TP Wu, KC Ruan and WY Liu
A practical fluorescence-labeling method for sequencing small RNAs by the
traditional 'direct read out' on polyacrylamide gel electrophoresis was
established. The 3' terminus of RNA was oxidized into dialdehyde by sodium
periodate and then labeled with fluorescein-5-thiosemicarbazide through the
condensation reaction between carbazide and aldehyde. The
fluorescence-labeled RNA was partially degraded enzymatically and
fractionated by polyacrylamide gel electrophoresis. The fluorescent bands
were visualised by ultraviolet photography. A partial sequence of yeast 5S
rRNA was determined. The result indicates that this method can be used in
sequencing small RNAs rapidly, conveniently and safely.
ARTICLES
A fluorescence-labeling method for sequencing small RNA on polyacrylamide gel
Shanghai Institute of Biochemistry, Academia Sinica, China.
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