Minguez P, Letunic I, Parca L, et al. PTMcode v2: a resource for functional associations of post-translational modifications within and between proteins. Nucleic Acids Res. 2015;43(Database issue):D494-502. doi:10.1093/nar/gku1081.

Sánchez R, Serra F, Tárraga J, et al. Phylemon 2.0: a suite of web-tools for molecular evolution, phylogenetics, phylogenomics and hypotheses testing. Nucleic Acids Res. 2011;39(Web Server issue):W470-4. doi:10.1093/nar/gkr408.

Huerta-Cepas J, Bueno A, Dopazo J, Gabaldón T. PhylomeDB: a database for genome-wide collections of gene phylogenies. Nucleic Acids Res. 2008;36(Database issue):D491-6. doi:10.1093/nar/gkm899.