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PEPxxWA-CTERM sorting domain This variant form of PEP-CTERM sorting signal shows unusually strong conservation across much of the hydrophobic transmembrane segment, including an unusual Trp (W) residue at position 6 of the seed alignment. The Trp is replaced by Tyr (Y) in a number of proteins hit by the HMM. The top-scoring members of this family tend to occur in Sphingomonas and related genera, encoded by genomes that also encode the sorting enzyme XrtV (exosortase V).
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