The photoreceptor for UV-B-induced responses is UVR8, is a seven-bladed b-propeller protein, which forms functionally inactive homodimers in the absence of UV-B

TLS Online TPP Program

#Id: 3397

#Unit 3. Fundamental Processes

Damage leads to the proteolytic destruction of a transcriptional repressor (the LexA repressor) that controls expression of genes involved in the SOS response, including those for DinB, UmuC, and UmuD, the inactive precursor for UmuD0.

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#Id: 5382

#Unit 10. Ecological Principles

Perfect compensation hypothesis

TLS Online TPP Program

#Id: 3498

#Unit 12. Applied Biology

In protoplast fusion, protoplasts of desired strains/species are mixed in almost equal proportion by PEG induced, electrofusion and high pH-high Ca²⁺ treatments.

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#Id: 562

#Unit 2. Cellular Organization

The lac mRNA (as most mRNA is in bacteria) is extremely unstable and decays with a half-life of only 3 minutes.

TLS Online TPP Program

#Id: 8452

#Unit 1. Molecules and their Interaction Relevant to Biology

If the α helix lies parallel to the direction of the major groove, the straight α helix can contact 4–6 bp before the bases curve out of the plane of the amino acids in the α helix.