Ribothymidylic acid residue

Ribothymidylic acid residue 813 Ribozyme(s) 649 - 652, 239 artificial 652 hairpin 649,651s hammerhead 649, 651 leadzyme, 651s Ribulose 164s Ribulose bisphosphate 707s Ribulose bisphosphate carboxylase (Rubisco)... 

These products can be formed by attack of OH on quinonoid intermediates of the type postulated for thymidylate S5mthetase (formed in step d of Fig. 15-21). A related reaction is the posttranscriptional conversion of a single uracil residue in tRNA molecules of some bacteria to a thymine ring (a ribothymidylic acid residue). In this case, FADH2 is used as a reducing agent to convert the initial adduct of Fig. 15-21 to the ribothymidylic acid and THF. "... 

Ribosomal RNAs characteristically contain a number of specially modified nucleotides, including pseudouridine residues, ribothymidylic acid, and methylated bases (Figure 11.26). The central role of ribosomes in the biosynthesis of proteins is treated in detail in Chapter 33. Here we briefly note the significant point that genetic information in the nucleotide sequence of an mRNA is translated into the amino acid sequence of a polypeptide chain by ribosomes. 

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