Since the onset of the global epidemic of Severe Acute Respiratory
Syndrome Coronavirus 2 (SARS-CoV-2), whole genome sequencing of virus
in all countries has been considered to track and predict virus
transmission and variation patterns. In the current study we reported a
novel complete genome sequence of SARS-CoV-2 isolated from Iran.
Genomics variations and protein sequences were evaluated for the
isolated sequence and seven Iranian complete genome sequences of
SARS-CoV-2 from NCBI using the reference genome of the SARS-CoV-2
Wuhan-Hu-1. The results showed six nucleotide substitutions. The
multiple sequence alignment of the spike protein of the Wuhan-Hu-1
strain and the emerging variants indicated similar its residue pattern
in the current sequence to the Wuhan-Hu-1 strain. There were relatively
similar binding affinity and residues involved in the interactions of
the spike receptor-binding domain (RBD) of the Wuhan-Hu-1 strain, the
variants and Hormozgan With angiotensin-converting enzyme 2 (ACE2).
Tracing the phylogeny of virus indicated distinct clustering of Iranian
variants in branches close to the Asian countries. The mutation effect
study on the function of proteins predicted neutral impact of all six
nucleotide substitutions. However, the free energy calculations
indicated a decreasing the protein stability related to the mutations.
This data, consistent with similar studies, showed that despite the high
similarity in the nucleotide sequence of the SARS-CoV-2, the mutation
pattern varies from country to country. Therefore, any country can
benefit from these studies to track and find appropriate strategies for
treating and controlling the epidemic.Communicated by Ramaswamy H.
Sarma.