Putative 5′ regulatory region of SFT.

(A) Sequence represents the 1-kb PCR product generated from theEcoRV library of the Human Genome Walker Kit (Clontech) with primers specific for SFT. Underlined nucleotides share 100% identity with exon 6 of the UbcH5A gene, a member of E2 ubiquitin-conjugating enzymes. (B) Sequence corresponds to the 5′ region of SFT RNA (GenBank accession no. AF020761, now designated as unknown RNA sequence). Nucleotides within the black box are identical in both sequences.