The human body is a great mystery and scientists still have a lot of work ahead of them in this regard. The current one is also a good example the discovery of a hitherto unknown structure found in the human intestines and mouth. Scientists have named these virus-like structures obelisks because of their presumed microscopic shape.
Discovered structures they replicate much like virusesbut they are much smaller and simpler. Due to their miniature dimensions, they fall into the class viroids, which are usually single-stranded RNAs without a protein coat. However, most viroids are infectious agents that cause disease, but the new discovery suggests nothing of the sort.
So the main question is why they are found in the human body and what is their purpose. The inventors from Stanford University, the University of Toronto and the Technical University of Valencia have several theories. They can influence the activity of genes in the human microbiome, although they also linger in the mouth. The common bacterium Streptococcus sanguinis, which is found in the mouth, would be useful for this. It is believed that these viroids they infect various bacteria in the mouth and in the intestinesalthough it is not yet clear why.
It seems that some found viroids they contain the instructions for the enzymes needed for replication, so they appear to be more complex than the average viroid. In any case, the chicken-and-egg debate has been going on for yearsand whether viruses evolved from viroids, or whether viroids evolved from virusesso another study could finally settle this dispute.
Although scientists don’t know exactly what viroids do, they have discovered how they are in our bodies very expanded. These sequences are found in roughly seven percent of human gut bacteria and a whopping 50 percent of bacteria in the mouth. Gut structures also feature a different RNA sequence compared to viroids in the mouth.