Enzyme catalysing DNA recombination

Numéro d’image : 11818263
Enzyme catalysing DNA recombination
Enzyme catalysing DNA recombination. Molecular model of the enzyme flippase recombinase (FLP recombinase,red and yellow) mediating the recombination of strands of DNA (deoxyribonucleic acid,green) at a Holliday Junction. Two views (main image at left,image at right rotated sideways) of this process are shown. This recombination is a natural genetic process known as crossing over,and involves the mixing of two strands of DNA. Recombinase enzymes snip open each DNA strand,starting the process going and forming a four-way alignment known as a Holliday Junction (seen in the foreground image at left). This enzyme is derived from Saccharomyces cerevisiae (Baker's yeast). It is acting as both a ligase (bond-forming enzyme) and a lyase (bond-breaking enzyme)
Licence : Droits gérés
Crédit: Science Photo Library / Laguna Design
Taille de l’image : 4591 px × 3591 px
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