LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
DNA translocase, molecular model. This is FtsK, a DNA translocase that coordinates chromosome segregation and cell division in bacteria. It is a cyclic hexamer, with six protein chains shown in different colours here. The DNA (deoxyribonucleic acid) handled by this enzyme passes through the centre of the ring which translocates the DNA using a rotary inchworm mechanism. This example is from the Pseudomonas aeruginosa bacterium.
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