The process of RNA editing is the alteration of the sequence of nucleotides in the RNA after it has been transcribed from DNA, but before it is translated into a protein. RNA editing occurs by two distinct mechanisms:<em><u /><u>Substitution</u> <u>editing </u></em>and <u><em>Insertion/</em></u><em></em><u><em>deletion</em></u><em> <u>editing</u></em>.
<u><em>Substitution editing</em></u> is the chemical alteration of individual nucleotides. These alterations are catalyzed by enzymes that recognize a specific target sequence of nucleotides:
*Cytidine Deaminases that convert a C in the RNA to uracil.
*<em />adenosine deaminases that convert an A to inosine,which the ribosome translates as a G.<span>Thus a CAG codon</span><span> (for Gln) can be converted to a CGG codon (for Arg).
<em><u>*Insertion/deletion editing</u></em><em><u /></em><u /> is the insertion or deletion of nucleotides in an RNA.
These alterations are mediated by guide RNA molecules that base-pair as best they can with the RNA to be edited and serve as a template for the addition( or removal) in the target.</span>
Chloroplast is a part in a plant cell. It is the site at which photosynthesis occurs (light energy converted into oxygen).
Answer:what does that paper mean
Explanation:are u actually in college or is that a job application
<span />Aspirin, acetaminophen and ibuprofen do not have
close similarities based on the classification and molecular structure. Aspirin
is an acetyl derivative and have more than one crystal structure. Ibuprofen,
the ones available as painkiller pills, is actually a racemic form, but like
aspirin, it acts by inhibiting COX enzymes to limit prostaglandin activity.
Acetaminophen is not even an NSAID because it has little anti-inflammatory
activity.
