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Table 1 Artificial data set.

From: How to find simple and accurate rules for viral protease cleavage specificities

Artificial data set A (4-mers: P2-P1-P1'-P2') Artificial data set B (6-mers: P4-P3-P2-P1-P1'-P2')
P1' {A,I,L,M,F,V} P4 {A,G,I,L,M,F,T,V}
P2' {P} P3 {A,G,I,L,F,T,V,W}
  P2 {P}
  P1 {R}
  P1' {D,E}
  P2' {D,E}
  1. Rules for the two artificial data sets used. occur.
  2. Any amino acid could occupy the two first positions in artificial data set A (the generated peptides were longer than the actual rule). One letter amino acid abbreviations are used. The sign means "in" and the sign means "not in". The rules are connected with the Boolean AND operator, which means that all position rules must be true for cleavage to