RAMON ANDRADE 3DCIENCIA / SCIENCE PHOTO LIBRARY RAMON ANDRADE 3DCIENCIA / SCIENCE PHOTO LIBRARY
DNA bound to DNA clamp. Molecular model of the beta clamp polymerase processivity factor (yellow and pink) from an Escherichia coli bacterium bound to a DNA (deoxyribonucleic acid) molecule (blue and orange). The clamp is part of a larger molecule (not seen), a DNA polymerase. DNA polymerases are enzymes that synthesise new strands of DNA from a complementary template strand during DNA replication. The clamp directly binds the DNA duplex to keep it bound to the enzyme.
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