... doi:10.1046/j.1432-1033.2002.03283.xGTTCAGAGACTATA-3¢;OP169,5¢-ACCTAAGGCGGACGTTACTG-3¢;OP180,5¢-GCCTCCCTTGGGATAT-3¢; OP448, 5¢-AACCGAACAATGAGACTGAA-3¢;OP449, 5¢-CTCGTATTCGAAGGCATGCA-3¢;C78,5¢-TGCTTCCTTTCGGAACGA-3¢; C231, 5¢-ATTCCGATATCGTGCTCTA-3¢; ... the 7.5-kb RNA contains a polyadenylation signal, which in mRNA formation indu-ces cleavage and polyadenylation of the I-DirImRNA.Finally, a spliceosomal intron (I51) harboured by theI-DirI ... 5¢-CACTTCTAGAACCATGGTGAAAGGAACG-3¢;OP2,5¢-TGTCTGGATCCTCATCTG-3¢;OP4,5¢-TGTTGAAGTGCACAGATT-3¢;OP11, 5¢-GACTAGTTGACTTCTCACAGA-3¢; OP20,5¢-TTGAACACTTAATTGGGT-3¢;OP65,5¢-GGAGFig. 1. Homing endonuclease...