21331 OGG alignments

To preform genome-wide evolutionary analyses to search for genes involved in pit viper infrared perception, we sequenced whole coding sequences for 10 snake species. Combing these newly generated CDS data with the 9 published snake genomes, we produced a dataset consisting of 21,331 orthologous gene groups (OGGs) for 19 snake species, including eight pit vipers, one Fea’s viper, two true vipers, and representative species from other five snake families.