**Troponin I [[Ciona intestinalis>http://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?db=nuccore&id=74096270]] [[Halocynthia roretzi>http://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?db=nuccore&id=18157508]] [[Polyandrocarpa misakiensis>http://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?db=nuccore&id=18157501]]