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Gene repressor proteins which inhibit the transcription of particular genes in eukaryotes also exist. They may act by binding either to control parts within the promoter region near the gene or at sites located a long distance away from the gene, called as silencers. The repressor protein should inhibit transcription directly. One instance is the mammalian thyroid hormone receptor that, in the absence of thyroid hormone represses transcription of the goal genes. Furthermore, other repressors inhibit transcription by blocking activation. This can be get in one of several ways: by blocking the DNA binding site for an activator protein, through binding to and masking the activation domain of the activator factor, or by forming a non-DNA binding complex with the activator protein. Several instance of every mode of action are known.
Into which two groups can the nitrogen-containing bases that form DNA and RNA be classified? What is the criterion used in that classification? The nitrogen-containing bases th
sir i want standard protocol to extract dna from banana leaves
1. Fats promote absorption of fat soluble vitamins like vitamin A, D, E and K. Patients of cystic fibrosis often absorb fat poorly and are at-risk for fat-soluble vitamin deficienc
Determine the significance of Mesoglea. The jellylike layer found between endodermal and ectodermal cell layers of diploblastic organisms. It acts as a type of cement holding t
Q. What is the organ that releases the female gamete under formation? How is this release triggered? What is the organ that collects the released gametes? The organ that libera
Define about the Spectral Techniques - Colorimetry? Many determinations in the biochemistry laboratory are based on measurements of radiant energy emitted, transmitted, absorbe
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Define two major aspects of nutrition economics? There are two major aspects of nutrition economics. These aspects are: 1) Quantities of food commodities and their developme
These are found in about 3-6 per cent of cases of ARF. These nodules are typically subcutaneous, firm, painless, freely movable (0.5-2 cm size) and their presence indicates that t
The next step in the nitrogen cycle is the assimilation of inorganic nitrogen in the type of ammonia into organic nitrogen-having compounds. Total organisms assimilate ammonia by
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