Type I phytochrome (phyA) in the light as a result of a combination of factors: inhibition of transcription, mRNA degradation, and proteolysis.

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#Unit 7. System Physiology – Animal

A synapse is a site where information is transmitted from one cell to another. 

Types of synapses:

1. electrical synapse

2. chemical synapse

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#Unit 2. Cellular Organization

Molecules that induce enzyme synthesis but are not metabolized are called gratuitous inducers such as IPTG

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#Unit 3. Fundamental Processes

Another example of direct reversal is the removal of the methyl group from the methylated base O6 –methylguanine  In this case, a methyltransferase removes the methyl group from the guanine residue by transferring it to one of its own cysteine residues. This is costly to the cell because the methyltransferase is not catalytic; having once accepted a methyl group, it cannot be used again.

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#Unit 3. Fundamental Processes

Sigma factors of E.Coli

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#Id: 2591

#Unit 13. Methods in Biology

Touchdown  PCR is initiated at very high annealing temperatures, which allow only perfectly matched primer-template DNA hybrids to form and support amplification. The annealing temperature is dropped in a stepwise fashion with each cycle of PCR.