Dear Daz,
What about the exceedingly rare in naturally occurring coronaviruses CGGCGG doublet arginine codons in the furin cleavage site?
And this was new to me, any thoughts on the evidence of BsmBI restriction enzyme usage to insert the above codons?
bUT tHe cIA sAyS lOw cOnFIdEnCe!!!
Just kidding Daz everyone knows the above is Greek to you and that you don't have the slightest clue as to how this research works on any level.
But maybe Quack can consult his team of expert virologists and get back to us?
"The furin cleavage site of SARS-CoV-2 has codon usage —the pattern of preferences among synonymous three nucleotide sequences encoding amino acids in the genetic code— that is highly unusual for a natural SARS-related coronavirus, but that is as expected for a sequence engineered to function in humans."
"Taken together, the presence of a spike having an extremely high affinity for human SARS receptors, the presence of a furin cleavage site at the spike S1-S2 border, the unusual codon usage of the furin cleavage site, the sequence features enabling assembly from six synthetic nucleic-acid building blocks with BsmBI as reagent for assembly, and the one-for-one match between these features and the features proposed in the 2018 NIH and DARPA proposals, make an extremely strong case—a ‘smoking gun’ for a research related origin.