A toggle model is for phytochrome interconversion

The structure of the b-hairpin region of Pr is changed to an a helix during the conversion of Pr to Pfr, which initiates other conformational changes in the protein.

TLS Online TPP Program

#Id: 646

#Unit 3. Fundamental Processes

When DNA is treated with hydroxylamine, the amino group of cytosine is hydroxylated.

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#Id: 7427

#Unit 5. Developmental Biology

When the ratio of PSF relative to that of bacteria exceeds a certain threshold, cells stop proliferating and initiate the expression of genes that are required for their aggregation.

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#Id: 4974

#Unit 6. System Physiology – Plant

LFR action spectra for the photoreversible stimulation and inhibition of seed germination in Arabidopsis.

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#Id: 10196

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 2654

#Unit 7. System Physiology – Animal

Thick segment of the ascending limb of loop of Henle, has thick epithelial cells that have high metabolic activity and are capable of active reabsorption of sodium, chloride, and potassium