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| title | chunk | source | category | tags | date_saved | instance |
|---|---|---|---|---|---|---|
| Ribonucleoside | 1/1 | https://en.wikipedia.org/wiki/Ribonucleoside | reference | science, encyclopedia | 2026-05-05T11:29:31.885547+00:00 | kb-cron |
A ribonucleoside is a type of nucleoside including ribose as a component. They are analogous to the nucleosides that, along with a phosphate group, form nucleotides that are the functional units of DNA; however, ribonucleosides are principal components of RNA. These form ribonucleotides with the addition of a phosphate group, which chain to form a molecule of RNA. Deoxyribonucleosides (or simply nucleosides) are synthesised from ribonucleosides through a series of reactions. It is possible for ribonucleosides to be converted to their deoxy form through a reaction catalysed by ribonucleoside disphosphate reductase. The enzyme itself provides reducing equivalents by having its sulfhydryl groups oxidised through the course of the reaction. One example of a ribonucleoside is cytidine.
== References ==