Extended Data Fig. 2: The distribution of long 3′UTR isoform in three cellular compartments.
From: Alternative polyadenylation by sequential activation of distal and proximal PolyA sites

a, UCSC genome browser tracks showing the genes with a higher percentage of longer 3′UTR isoforms (dotted box) in both NM and NP, compared with CY, from polyA+ RNA-seq. NM: nuclear matrix, NP: nucleoplasm, CY: cytoplasm. b, Gene examples with higher percentage of long 3′UTR isoforms mainly observed in NM, and similar lever in NP and CY. c, Illustration of Percentage of dPAS Usage Index (PDUI) computation. d, Distribution of the PDUI in three cellular compartments. PDUI values are from the 654 genes identified in Fig. 1 f.