Sir3 gene silencer acting on DNA,molecular model. Sir3 (bright green) is acting on a circular strand of DNA (deoxyribonucleic acid,red and yellow). Sir3 is an example of a silent information regulator (Sir) found in yeast such as Saccharomyces cerevisiae. Here,the DNA is wrapped around a histone core (pink),forming a structure called a nucleosome. The region of the Sir3 gene silencer shown here is the BAH (bromo-associated homology) domain | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Laguna Design |
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