Auxins in biological samples can be determined by bioassay, mass spectrometry, or enzyme-linked immunosorbent assay (ELISA).

The Avena coleoptile curvature assay is a sensitive measure of auxin activity (it is effective for IAA concentrations of about 0.02 to 0.2 mg L–1).

TLS Online TPP Program

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#Unit 2. Cellular Organization

The histone-fold domain is composed of three a-helical regions separated by two short unstructured loops.

 

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#Unit 4. Cell Communication and Cell Signaling

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#Id: 5624

#Unit 7. System Physiology – Animal

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#Unit 3. Fundamental Processes

Comparisons of the sequences of several bacterial sigma factors suggested conserved regions in E. coli s70  that interact directly with promoters DNA-binding regions of the sigma factor fold into independent domains in the protein regions 1.2, 2.3– 2.4, 3.0, and 4.1–4.2.

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#Unit 4. Cell Communication and Cell Signaling

When DNA is damaged, p53 is tetramerized and accumulates rapidly.