Lambda bacteriophage infection, animation

Videonummer 11936687
Lambda bacteriophage. Animation showing a lambda bacteriophage inserting its DNA (deoxyribonucleic acid) into a bacterium, where it integrates with the host's DNA. A bacteriophage, or phage, is a virus that infects bacteria, in this case Escherichia coli. It consists of a capsid head (blue) and a tail (light blue). The phage attaches to the bacterial cell membrane and injects its DNA through the membrane into the cell's cytoplasm. The DNA is immediately formed into a circle by the enzyme DNA ligase. In the lytic life cycle, when the phage replicates and then kills the cell, the DNA remains a separate molecule. However, in the lysogenic life cycle the viral DNA integrates into the host's chromosome and stays mainly silent. This integration occurs at specific sites (red) on the viral and bacterial DNA known as attachment sites.
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / Biocosmos / Francis Leroy & Anthony Lombaerts
Modell-Rechte: nicht erforderlich
Länge: 30 Sekunden
Seitenverhältnis: 16:9
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