Formin protein nucleate the assembly of unbranched filaments, (FH1 and FH2 domains-Actin nucleation by the formin FH2 domain).

Formins are activated by membrane-bound Rho-GTP, a Ras-related small GTPase.

The Arp2/3 Complex Nucleates Branched Filament Assembly.

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#Id: 1192

#Unit 7. System Physiology – Animal

The responses of the rods, cones, and horizontal cells are hyperpolarizing potential

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#Id: 5454

#Unit 7. System Physiology – Animal

The basis for the relative refractory period is the higher K+ conductance than is present at rest. 

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#Id: 911

#Unit 13. Methods in Biology

The more metabolically active cells that are present in the culture, the more formazan will be generated, and so this assay provides a readout of the number of live cells as a function of time.

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#Id: 1503

#Unit 4. Cell Communication and Cell Signaling

The amyloid aggregation of p53 demonstrated by biophysical techniques:

X-ray diffraction 

Fourier transform infrared spectroscopy (FTIR)

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#Id: 2736

#Unit 13. Methods in Biology

The run-on reaction is usually done in the presence of labeled nucleotides so the products will be labeled.