Figure 4.

Distribution of PS with respect to membrane protein topology. The normalized fraction of trans-membrane PS sites (black columns) is compared to the cytoplasmic (grey) and external (white) PS sites. Results are shown only for Vibrionaceae (A) and Shewanellaceae (B) transporters. KT99 TrEMBL IDs are not available, for this reason in (B) are reported NCBI's Locus Tags.