Note that the set of genes are named "Tag" (teichoic acid glycerol) instead of "Tar" (teichoic acid ribitol) in "B. subtilis" 168, which lacks the TarK/TarL enzymes. TarB/F/L/K all bear some similarities to each other, and belong to the same family (). Due to the role of "B. subtilis" as the main model strain, some linked UniProt entries are in fact the "Tag" ortholog as they are better annotated. The "similarity search" may be used to access the genes in the Tar-producing "B. substilis" W23 (BACPZ).