Belongs to the plant self-incompatibility (S1) protein family. The predicted gene At4g08560 has been split into 2 genes: At4g08558 and At4g08560. The predicted gene At4g08560 has been split into 2 genes: At4g08558 and At4g08560. The predicted gene At4g08560 has been split into 2 genes: At4g08558 and At4g08560.