What's Happening?
A team led by Andrew Fire at Stanford University has identified over 3,000 unique RNA structures, termed 'obelisks,' within the human microbiome. These RNA loops, found in bacteria from human saliva and gut samples, do not fit into existing biological
categories. Unlike viruses or bacteria, obelisks are non-coding RNA molecules that replicate without causing harm to host cells. Their discovery challenges current biological classifications and suggests the existence of a distinct form of biological replication, potentially linked to ancient molecular processes.
Why It's Important?
The discovery of obelisks could redefine our understanding of biological replication and the diversity of life forms. These RNA structures may represent a new class of life-like entities, offering insights into the evolution of genetic systems. Their presence in the human microbiome raises questions about their role in microbial ecosystems and potential impacts on human health. This finding could lead to new research directions in microbiology and evolutionary biology, prompting a reevaluation of how life is classified and understood.
