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In E. coli there are seven rRNA transcription units scattered by the genome, each of that contains one copy of every of the 16S, 23S and 5S rRNA genes and one to four copies of several tRNA genes which is shown in the diagram. This gene assembly is transcribed by the single prokaryotic RNA polymerase to yield a one 30S pre-rRNA transcript about 6000 nt in the size. This arrangement make sures that stoichiometric amounts of the several rRNAs are synthesized for ribosome assembly. Subsequently transcription, the 30S pre-rRNA molecule forms internal base paired regions to provide a series of stem-loop structures and ribosomal proteins bind to form a ribonucleoprotein (RNP) difficult.
Figure: Transcription and processing of prokaryotic rRNA.
Evolutionary Implications of Natural Regulation Many changes in abundance can be attributed to changes in extrinsic factors such as weather, disease or predation. But some cha
What is Cost Effective Analysis? Cost effective analysis: Cost effective analysis provides for the choice of least expensive strategy at the least cost. Here the outcome is mea
In Drosophila, the anterior determinant Bicoid is known to activate expression of the gene hunchback in the anterior half of the embryo. (Bicoid is a transcription factor, which b
Q. Generally which phase of the cell cycle has longer duration? The mitotic phase has quite a shorter length and the interphase comprises approximately 4/5 of the cell cycle.
general charcteristics
Define the terms umbra and penumbra, and describe how they relate to solar eclipses.
Define the Interaction of Vitamin C with other Nutrients? Having gone through the discussion above it must be evident to you that nutrients are interdependent and are related t
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The human eye is an organ which reacts to light for various purposes. As a conscious sense organ, the mammalian eye permits vision. Cone and Rod cells in the retina allow conscious
Q. Is it expected that a change in the primary, in the secondary or in the tertiary structure of a protein will produce furthermore functional consequences? Any change of the p
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