DNA. Molecular model of a strand of DNA (deoxyribonucleic acid) showing reversible bending and helix geometry. DNA is a helical molecule (here spiralling across the image) made up of two interlocking sugar-phosphate strands bound together by their nucleotide bases. Two 'twists' of the helix are seen here. This is B-DNA,the normal structural form of DNA. This model shows 602 atoms forming a dodecamer of 12 bases: CGCGAATTCGCG. The letters stand for the four nucleotide bases found in DNA: adenine (A),thymine (T),guanine (G) and cytosine (C). The atoms (tubes) are: carbon (green),oxygen (red),phosphorus (pink),and nitrogen (blue). Hydrogen atoms are not shown | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Laguna Design |
Taille de l’image : | 4591 px × 3591 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |