| UniProtKB/Swiss-Prot |
| Q757U3, ETR1_ASHGO; | Q6FXN7, ETR1_CANGA; | Q8WZM3, ETR1_CANTR; |
| Q6BLV6, ETR1_DEBHA; | Q6CIR6, ETR1_KLULA; | Q10488, ETR1_SCHPO; |
| Q6CBE4, ETR1_YARLI; | P38071, ETR1_YEAST; | Q8WZM4, ETR2_CANTR; |
| Q6BV30, ETR2_DEBHA; | O45903, MECR1_CAEEL; | Q9XXC8, MECR2_CAEEL; |
| Q8LCU7, MECR_ARATH; | Q7YS70, MECR_BOVIN; | Q6GQN8, MECR_DANRE; |
| Q54YT4, MECR_DICDI; | Q9V6U9, MECR_DROME; | Q9BV79, MECR_HUMAN; |
| Q9DCS3, MECR_MOUSE; | Q9Z311, MECR_RAT; | Q9JIF5, PECR_CAVPO; |
| Q9BY49, PECR_HUMAN; | Q99MZ7, PECR_MOUSE; | Q5RCH8, PECR_PONAB; |
| Q9WVK3, PECR_RAT; | Q99190, TSC13_YEAST; | O94511, YN67_SCHPO; |
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