Abstract: Methods of producing recombinant, multi-component proteins in eukaryotic expression systems, comprising co-transforming a eukaryotic cell with two or more different nucleic acid constructs, each comprising a respective transcriptional unit encoding a protein component, wherein each nucleic acid construct comprises the same promoter and signal sequence, such that each of the components will be targeted to the same organelle of the cell for expression and intracellular assembly. In one or more embodiments, each nucleic acid construct comprises a promoter from a protein storage gene that is operably linked to a DNA sequence that encodes for a protein storage-specific signal sequence.