DNA cleavage by restriction enzymes
Référence de la vidéo 11938426
| DNA cleavage by restriction enzymes. Animation showing the mechanism by which restriction enzymes (green) cleave DNA (deoxyribonucleic acid). These enzymes cleave DNA strands at specific sequence locations, allowing hybrid DNA strands to form from the combined fragments after the complementary ends are joined. The letters represent the nucleotide bases: A (adenine), C (cytosine), G (guanine), and T (thymine). This example shows the cleavage region of two DNA strands with identical sequences GGATCC and its complement CCTAGG. The rest of the strands are not shown. Bacteria have a variety of restriction endonucleases that cleave DNA at more than a hundred distinct recognition sites, each of which consists of a specific sequence of four to eight base pairs. After the cleavage, the resulting 'sticky ends' are joined to create a hybrid DNA strand. For this animation with labels, see K004/4313. | |
| Licence : | Droits gérés |
| Crédit : | Science Photo Library / Biocosmos / Francis Leroy & Michael Pierard |
| Model Release : | Non requis |
| Durée : | 20 Secondes |
| Aspect ratio : | 16/9 |
| Restrictions : | - |
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