The present disclosure provides fully human variant anti-AIP2 variant antibodies, and antigen binding proteins thereof, having improved characteristics compared to the wild type anti-AIP2 antibody E7 from which the variant clones are derived. The variant anti-AIP2 antibodies exhibit improved binding to AIP1 and AIP4 as determined in an in vitro quorum sensing reporter assay, have improved thermal stability, provided complete protection against infection with two different strains of Staphylococcus aureus MRSA in pre-treated mice, and can be manufactured at higher yields.
