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. Author manuscript; available in PMC: 2016 Apr 1.
Published in final edited form as: Curr Protoc Mol Biol. 2015 Apr 1;110:4.23.1–4.23.17. doi: 10.1002/0471142727.mb0423s110

Figure 3.

Figure 3

Schematic of sequencing data processing to identify poly(A) sites. Raw reads are first trimmed at 5’ end (and 3’ end if necessary) and then aligned to the reference genome sequence. Poly(A) sites are defined by PASS reads, which are the uniquely mapped reads with at least two Ts not matched with genomic sequence. The last aligned position is considered as the poly(A) site.