This repo contains AMBER-FB18 phosphorylated amino acid force field parameters as described in our 2021 JPCB paper available here: https://doi.org/10.1021/acs.jpcb.1c10971
Please note that the original SI to the paper contains an incorrect version of the file frcmod.phosfb18. That error is corrected in this repo. A correction to the published SI is now available here: https://doi.org/10.1021/acs.jpcb.2c06820