Distinct regulatory networks control toxin gene expression in elapid and viperid snakes.

"data availability the datasets supporting the conclusions of this article are available in the national center for biotechnology information (ncbi) repository under bioproject id prjna931953 (biosample samn33139130 for p textilis and samn33139131 for c viridis; srr23348481-srr23348476).; toxin contigs from the de novo assembly of the p textilis venom gland transcriptome have been submitted to genbank under accession numbers pp227363-pp227414 with cds regions annotated. data availability the datasets supporting the conclusions of this article are available in the national center for biotechnology information (ncbi) repository under bioproject id prjna931953"

"all commands and scripts/software links used are available on https://github com/cmodahl/elapidvsviperid git .; all commands scripts/software links and a fasta file of all promoter sequences are available on https://github com/cmodahl/elapidvsviperid git ."

"Declarations Ethics approval and consent to participateSnake venom gland tissues from Pseudonaja textilis were collected under Animal Ethics Approval, project 93/12 issued by SA Pathology/CHN Animal Ethics Committee, and all methods in accordance with ARRIVE guidelines. Snake venom gland tissues from Crotalus viridis were collected under Animal Ethics Approval IACUC protocol no. 9204, granted by the University of Northern Colorado, in accordance with ARRIVE guidelines. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This study was supported by an academic research grant from the National University of Singapore to RMK."