Deoxyribonucleotide
A deoxyribonucleotide is a
hydroxyl group
on the 5'-carbon of the sugar.
When deoxyribonucleotides polymerize to form DNA, the phosphate group from one nucleotide will bond to the 3' carbon on another nucleotide, forming a
dehydration synthesis
. New nucleotides are always added to the 3' carbon of the last nucleotide, so synthesis always proceeds from 5' to 3'.
Deoxyribonucleoside
Just as a nucleoside can be considered as a nucleotide without a phosphate group, so too a deoxyribonucleoside is a deoxyribonucleotide without a phosphate.[2] An example is deoxycytidine.
References
- ISBN 978-1-4160-6257-8.
- ^ Deoxyribonucleosides at the U.S. National Library of Medicine Medical Subject Headings (MeSH)
External links
- Deoxyribonucleotides at the U.S. National Library of Medicine Medical Subject Headings (MeSH)