Genomic fragment including the Su(var)2-10 gene, from BAC clone CH322-05O22. A sfGFP-Tag:FLAG-Tag:CS(PSP)-Tag:CS(TEVp)-Tag:BLRP tag cassette has been introduced at the C-terminal end of the Su(var)2-10 gene, such that protein isoforms A, B, C, D, E,F,G, H, I, J, K, L, M and N are tagged.