Mononucleosomes typically have 200 bp DNA. End-trimming reduces the length of DNA first to 165 bp and then generates core particles with 146 bp.

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#Id: 10034

#Unit 4. Cell Communication and Cell Signaling

An E3 ubiquitin ligase binds to Phosphoserines of I-κBα & links poly-K48-linked ubiquitin chains that target the attached I-κBα protein to the proteasomal degradation

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#Id: 10438

#Unit 4. Cell Communication and Cell Signaling

P-450 enzymes, modify benzo(a)pyrene in a series of reactions, producing 7,8-diol-9,10-epoxide, a highly potent mutagenic species

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#Id: 7980

#Unit 10. Ecological Principles

Organisms that are denser than their surrounding water, a variety of adaptations can either reduce an organism’s density or retard its rate of sinking.

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#Id: 5755

#Unit 10. Ecological Principles

Indicator species - Some species demonstrate health of community 

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#Id: 3981

#Unit 2. Cellular Organization

The quinolone antibiotics, inhibits bacterial DNA gyrase and topoisomerase IV, as ciprofloxacin (Cipro). The quinolones act by blocking the last step of the topoisomerase reaction, the resealing of the DNA strand breaks. Ciprofloxacin is a wide-spectrum antibiotic.