Copurification of CSD2 and FSD proteins with
Arabidopsis chloroplasts. Plastids were purified from rosette leaves,
run on SDS-PAGE, and immunodetected with the antisera listed to the
left. Cp, Intact chloroplast fraction; Total, total cell extract; APX,
ascorbate peroxidase; ASA, anthranilate synthase alpha. Equal protein
was loaded based on the level of Rubisco large subunit protein.