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Fig. 3. Alternative splicing of Filia in mice. (A) (a)
Filia is a single-copy gene with three exons on chromosome 9
(73,235,088-73,237,040) that is transcribed as two isoforms. (b) The less
abundant 1.6 kb transcript encodes a 440 amino acid protein with a smaller
molecular mass (48 kDa) than predicted (70 kDa) by its mobility on SDS-PAGE.
The tenfold repeat is indicated by double-arrow line, and peptides obtained by
mass spectrometry (yellow rectangles) are aligned at the bottom. (c) Same as b
for the 1.2 kb transcript that encodes a 346 amino acid protein with a smaller
molecular mass (38 kDa) than predicted (50 kDa) by its mobility on SDS-PAGE.
(B) Synthetic oligonucleotide primers and Taqman probes designed to
distinguish the alternatively spliced 1.6 kb (upper) and 1.2 kb (lower)
isoforms of Filia transcripts. E, exon.