Fuente: WIPO "tomato" The invention relates to the field of producing recombinant proteins based on fibroin. In particular the invention describes recombinant protein comprising at least two repeat peptide domains, wherein at least one of the repeat peptide domains is a fibroin-like repeat sequence. The invention further relates to methods for expressing such recombinant proteins, for example in a plant cell. The invention further describes methods for constructing recombinant fibroin expressing nucleotide constructs.