Peptide “Velcro”: design of a heterodimeric coiled coil.
Obelisks
Oblins
Viroid-like
https://en.m.wikipedia.org/wiki/Obelisk_(biology)
'Obelisks': Entirely New Class of Life Has Been Found in The Human Digestive System
Viroid-like colonists of human microbiomes
https://pmc.ncbi.nlm.nih.gov/articles/PMC10827157/
Evidence for Simian Virus 40 (SV40) Coding of SV40 T-Antigen and the SV40-Specific Proteins in HeLa Cells Infected with Nondefective Adenovirus Type 2-SV40 Hybrid Viruses