LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
Bacteriophage alpha 3 protein capsid, computer artwork. Bacteriophages are viruses that infect bacteria. Bacteriophage alpha 3 has no outer protein coat, but has a capsid consisting of 60 coat proteins (irregular shapes flush with surface) and 12 pentameric (5-subunit) spike proteins (protruding from surface). The spikes allow the virus to recognise and bind to host cells. The virus carries its genetic material in single-stranded DNA (deoxyribonucleic acid) form.
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