Intermolecular Disulfide Complex Formation of Trx m4 and Its Target Proteins.
(A) Detection of the complex containing Trx m4. Protein samples were extracted from the wild type (WT), pgrl1ab, trx m1, trx m2-2, trx m4, and trx m124-2 mutants that were either dark adapted (D) or subjected to growth light (L; 50 µmol photons m–2 s–1). Fifty micrograms of proteins was separated by SDS-PAGE under nonreducing conditions. In addition to Trx m4 monomer (mono), Trx m4 complex was immunodetected using Trx m4 antibody (arrow).
(B) Detection of the complex containing PGRL1. The same protein samples as in (A) were immunodetected using PGRL1 antibody. Arrow indicates the Trx m4-PGRL1 complex. WT, wild type.