It turns out that bacterial RaxX shows similarity to peptides in the PSY (plant peptide containing sulfated tyrosine) family. nph.onlinelibrary.wiley.com/doi/10.1111/...
nph.onlinelibrary.wiley.com
A microbially derived tyrosine‐sulfated peptide mimics a plant peptide hormone
The biotrophic pathogen Xanthomonas oryzae pv. oryzae (Xoo) produces a sulfated peptide named RaxX, which shares similarity to peptides in the PSY (plant peptide containing sulfated tyrosine) fami...