one letter indicating the type of homology. It should be either 'o' (orthologs) or 'p' (paralogs).
Value
Returns a dataframe with the requested entries.
Details
This application rests on the KEGG Sequence Similarity Database, which contains the information about amino acid sequence similarities among all protein-coding genes in the complete genomes, as well as the addendum and virus categories, of the GENES database.
References
Kanehisa et al (2017) Nucl. Ac. Res. 33:D353-D361.