5 CH2OH 4 H O C H 3 O– OH H C1 C C2 HO – O H Fosfat Pi NH2 H C C N O C C H N C H O N H Adenin (A) N C H2 N N C C N C N C C CH3 H H Thymin (T) O H O O– H Deoxyribose (D) N P NH2 C C N C N H N O C C N C C H H H Guanin (G) H Cytosin (C) Puriner Pyrimidiner Symbol for adeninnukleotid Symbol for thyminnukleotid Symbol for guaninnukleotid Symbol for cytosinnukleotid Figur 39. DNA-nukleotidernes bestanddele og opbygning. Biokemibogen – liv, funktion, molekyle. 2. udgave. Tegning: Finn Petersen og Henning Dalhoff © Nucleus Forlag
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