Amelanism in the corn snake is associated with the insertion of an LTR-retrotransposon in the OCA2 gene.

ABSTRACT: The corn snake (Pantherophis guttatus) is a new model species particularly appropriate for investigating the processes generating colours in reptiles because numerous colour and pattern mutants have been isolated in the last five decades. Using our captive-bred colony of corn snakes, transcriptomic and genomic next-generation sequencing, exome assembly, and genotyping of SNPs in multiple families, we delimit the genomic interval bearing the causal mutation of amelanism, the oldest colour variant observed in that species. Proceeding with sequencing the candidate gene OCA2 in the uncovered genomic interval, we identify that the insertion of an LTR-retrotransposon in its 11(th) intron results in a considerable truncation of the p protein and likely constitutes the causal mutation of amelanism

SUBMITTER: Saenko SV 

PROVIDER: S-EPMC4657000 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature