All 35 PTS1-tripeptides found in the set of 152 peroxisomal proteins: AHL AKA AKF AKI AKL AKM AKV ANL ARF ARL ARM ARY ASL CKL HRL HRM KKL NKL PHL PKL PRL SHL SKF SKI SKL SKM SKV SNL SQL SRL SRM THL TKL TKV YRM Note that ARY, ASL, YRM at positions -3, -2, and -1, respectively, contain amino acids that are only present once at that position in the positive set. ==================================================================== Comparison of motif occurence for the set of 152 known PTS1-proteins and the set of 308 known PTS1-lacking proteins (but with C-terminal motif corresponding to any of the known PTS1): known microbody proteins known NOT-microbody proteins w. PTS1-like motif ======================== ============================ AHL 3 0.019 AHL 5 0.016 AKA 1 0.006 AKA 19 0.061 AKF 1 0.006 AKF 3 0.009 AKI 1 0.006 AKI 9 0.029 AKL 19 0.125 AKL 21 0.068 AKM 3 0.019 AKM 1 0.003 AKV 1 0.006 AKV 19 0.061 ANL 2 0.013 ANL 5 0.016 ARF 1 0.006 ARF 2 0.006 ARL 4 0.026 ARL 9 0.029 ARM 5 0.032 ARM 0 0 ARY 1 0.006 ARY 1 0.003 ASL 1 0.006 ASL 23 0.074 CKL 2 0.013 CKL 4 0.012 HRL 1 0.006 HRL 1 0.003 HRM 2 0.013 HRM 1 0.003 KKL 2 0.013 KKL 6 0.019 NKL 4 0.026 NKL 10 0.032 PHL 1 0.006 PHL 8 0.025 PKL 3 0.019 PKL 4 0.012 PRL 1 0.006 PRL 3 0.009 SHL 10 0.065 SHL 18 0.058 SKF 2 0.013 SKF 7 0.022 SKI 6 0.039 SKI 2 0.006 SKL 42 0.276 SKL 20 0.064 SKM 4 0.026 SKM 1 0.003 SKV 1 0.006 SKV 24 0.077 SNL 2 0.013 SNL 9 0.029 SQL 4 0.026 SQL 4 0.012 SRL 14 0.092 SRL 11 0.035 SRM 4 0.026 SRM 0 0 THL 1 0.006 THL 18 0.058 TKL 1 0.006 TKL 23 0.074 TKV 1 0.006 TKV 4 0.012 YRM 1 0.006 YRM 13 0.042 POSITION -3: POSITION -3: A 43 0.282 A 117 0.379 C 2 0.013 C 4 0.012 H 3 0.019 H 2 0.006 K 2 0.013 K 6 0.019 N 4 0.026 N 10 0.032 P 5 0.032 P 15 0.048 S 89 0.585 S 96 0.311 T 3 0.019 T 45 0.146 Y 1 0.006 Y 13 0.042 POSITION -2: POSITION -2: H 15 0.098 H 49 0.159 K 94 0.618 K 177 0.574 N 4 0.026 N 14 0.045 Q 4 0.026 Q 4 0.012 R 34 0.223 R 41 0.133 S 1 0.006 S 23 0.074 POSITION -1: POSITION -1: A 1 0.006 A 19 0.061 F 4 0.026 F 12 0.038 I 7 0.046 I 11 0.035 L 117 0.769 L 202 0.655 M 19 0.125 M 16 0.051 V 3 0.019 V 47 0.152 Y 1 0.006 Y 1 0.003