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Dezoksiribonukleotid

Dezoksiribonukleotid je monomerna komponenta dezoksiribonukleinske kiseline. Svaki dezoksiribonukleotid sadrži tri dijela:

Dušična baza ja uvijek vezana za 1' ugljik dezoksiriboze, koja se od riboze razlikuje po prisustvu protona na 2' ugljiku, umjesto -OH grupe. Fosfatna grupa se veže za 5' ugljenik šećera.[1][2][3]

Prilikom polimerizacije dezoksiribonukleotida, u formiraju DNK, fosfatna grupa jednog nukleotida se veže za 3' ugljik na drugom nukleotidu, preko fosfodiestarske veze u dehidratacijskoj sintezi. Novi nukleotidi se redovno dodaju na 3' ugljik zadnjeg nukleotida, tako da sinteza napreduje od 5' do 3'.[4][5]

Također pogledajte

Reference

  1. ^ Kapur Pojskić L., Ed. (2014): Uvod u genetičko inženjerstvo i biotehnologiju, 2. izdanje. Institut za genetičko inženjerstvo i biotehnologiju (INGEB), Sarajevo, ISBN 978-9958-9344-8-3.
  2. ^ Bajrović K, Jevrić-Čaušević A., Hadžiselimović R., Ed. (2005): Uvod u genetičko inženjerstvo i biotehnologiju. Institut za genetičko inženjerstvo i biotehnologiju (INGEB), Sarajevo, ISBN 9958-9344-1-8.
  3. ^ Hunter G. K. (2000): Vital Forces. The discovery of the molecular basis of life. Academic Press, London 2000, ISBN 0-12-361811-8.
  4. ^ Nelson D. L., Cox M. M. (2013): Lehninger Principles of Biochemistry. W. H. Freeman and Co., ISBN 978-1-4641-0962-1.
  5. ^ Međedović S., Maslić E., Hadžiselimović R. (2000): Biologija 2. Svjetlost, Sarajevo, ISBN 9958-10-222-6.

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Dezoksiribonukleotid
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