/Chirona

SARS-CoV-2 sequences and alternate mRNA vaccine generator tool

Primary LanguagePython

Chirona

Relative mutation score

NOTE: As of 24 Jun 2021, Chriona data has identified the mutation K417N mutation present in the Delta Plus variant (Pango AY.1) with ~24 points. Since this data was taken on 23 May 2021, newer mutations can only be screened with newer data from GISAID/NCBI.

Overview

Current SARS-Cov-2 variants and lineages are identified by PANGOLIN.

Emerging variants show resistance against vaccines previously produced, with neutralising effects.

Chirona attempts to find hotspots of mutations in SARS-CoV-2 Pango lineages and generate permutations of sequences that can adapt to said mutations.

Current mutations of concern as identified by Chirona

Mutation Alignment position Score Adjusted incidence BLOSUM62 delta
W152C 153 127.3998575 9.79998904 13
L452R 456 121.4137761 20.23562935 6
N501Y 505 85.02822072 10.62852759 8
Y145* 145 75.00904159 6.819003781 11
E484K 488 74.37119842 18.59279961 4
S13I 13 59.21420352 9.86903392 6
P681R 685 56.39980273 6.266644748 9
T95I 95 54.82820976 9.138034961 6

Credits

Original nucleotide sequences are directly from NCBI's Betacoronavirus database and are last updated here on 23 May 2021 UTC.

Moderna and Pfizer-BioNTech vaccine mRNA sequences by Dae-Eun Jeong et al., 2021.

Multiple sequence alignments produced solely using MAFFT.

BLOSUM62 JSON by @camillescott.