Fosfodiester
Fosfodiester er en gruppe af stærke kovalente bindinger mellem en fosfatgruppe og 5-carbon ringe carbohydrater (pentoser) over to esterbindinger. Fosfodiesterbindinger er en central del af det mest liv på Jorden, hvor de udgør backbone i DNA-strenge. I DNA og RNA er fosfodiesterbindinger koblingen mellem 3' carbonatomet i et sukkermolekyle og 5' carbon atomet på et andet, deoxyribose i DNA og ribose i RNA.
Fosfatgrupper i fosfodiesterbindinger er negativt ladet.
Enzymaktivitet
Fosfodiesterase er et enzym der katalyserer hydrolyse af fosfodiesterbindinger, heriblandt bindingen mellem cyklisk AMP eller cyklisk GMP.
Se også
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Phosphodiester Bond Diagram.svg
Forfatter/Opretter:
Phosphodiester bonds (PO4−) between nucleotides. Which presents Thymine (T) and two molecules of Adenine (A).
Forfatter/Opretter:
- File:Enlace fosfodiéster.png, File:PhosphodiesterBondDiagram.png: User:G3pro (talk)
- Original uploader was User:G3pro at en.wikipedia.org
- Derivative work: User:Merops (talk)
- Derivative work: User:Deneapol (talk)
- Derivative work: User:KES47 (talk)
- Text tweaks: Incnis Mrsi (talk)
- Text tweaks: DMacks (talk)
- Derivative work: User:Miguelferig (talk) with ionization
- Chem. / graphical improvements: User:Mykhal (talk)
Phosphodiester bonds (PO4−) between nucleotides. Which presents Thymine (T) and two molecules of Adenine (A).