Cohesins are composed of four subunits: 

Smc1, Smc3, Scc1, and Scc3

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#Id: 720

#Unit 3. Fundamental Processes

Each haploid bacterium typically has a single chromosome, so this type of replication control is called single copy.

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#Id: 449

#Unit 2. Cellular Organization

H32-H42 tetramer accounts for the diameter of the octamer. It forms the shape of a horseshoe.

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#Id: 5789

#Unit 7. System Physiology – Animal

Iodide is transported out of the thyroid cells across the apical membrane into the follicle by a chloride-iodide ion counter- transporter molecule called pendrin.

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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: 8181

#Unit 2. Cellular Organization

Catalase uses the H2O2 to oxidize a variety of other substrates (formic acid, formaldehyde, and alcohol) by the “peroxidation” reaction.