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ECB-ART-30928
Nucleic Acids Res 1975 Oct 01;210:1931-9. doi: 10.1093/nar/2.10.1931.
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Distribution of the modified nucleoside Q and its derivatives in animal and plant transfer RNA''s.

Kasai H , Kuchino Y , Nihei K , Nishimura S .


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The modified nucleoside, 7-(4,5-cis-dihydroxy-1-cyclopenten-3-yl-aminomethyl)-7-deazaguanosine, designated as Q, and its derivative, Q*, were found in tRNA''s from various organisms, including several mammalian tissues, other animals such as starfish, lingula and hagfish, and wheat germ. Q isolated from rat liver tRNA was found to be identical with E. coli Q by mass spectrometry and thin-layer chromatography. Thus the rare modified nucleoside Q originally isolated from E. coli tRNA, is widely distributed in various organisms. Analysis of the mass spectrum of Q* suggested that it has a different side chain from Q.

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References [+] :
BRUNNGRABER, A simplified procedure for the preparation of "soluble" RNA from rat liver. 1962, Pubmed