Arabidopsis thaliana	genes AtECI1, AtECI2, AtECI3	694684	
Bos taurus	-	3010, 3014	
Cucumis sativus	-	3006, 3020	
Escherichia coli	-	662184	
Escherichia coli	multienzyme complex of fatty acid oxidation	2210, 3004	
Escherichia coli	multienzyme complex which exhibits activity of EC 4.2.1.17, EC 1.1.1.35, EC 2.3.1.16, EC 5.1.2.3 and EC 5.3.3.8	2207, 3012	
Escherichia coli	wild-type and mutant enzymes alpha/Glu139Gln and alphaArg134Gln with mutations in the large alpha-subunit	3012	
Escherichia coli B / ATCC 11303	-	662184	
Gossypium hirsutum	-	3003	
Hepacivirus C	-	728221	
Homo sapiens	-	3014, 3017, 651935, 662630, 691485, 706005, 728221, 747410, 747742	
Homo sapiens	at least 2 isoforms in liver: 1. monofunctional mitochondrial enzyme, 2. peroxisomal enzyme forming a part of a multifunctional enzyme	3019	
Homo sapiens	monofunctional enzyme	3016	
Mus musculus	-	3023, 651935, 747727	
Mus musculus	multifunctional enzyme with activity of Ec 5.3.3.8, EC 4.2.1.17 and EC 1.1.1.35	3011	
Rattus norvegicus	-	2997, 2998, 3000, 3002, 3005, 3008, 3009, 3013, 3014, 3021, 3022, 3024, 3026, 652357, 652365, 653752, 678385, 747233, 747727	
Rattus norvegicus	at least 3 DELTA3,DELTA2-enoyl-CoA isomerases: 1.mitochondrial clofibrate-inducible short-chain isomerase, 2.mitochondrial non-inducible long-chain isomerase, 3.peroxisomal isoenzyme, which is a part of a multifunctional protein	3025	
Rattus norvegicus	at least three isoenzymes in liver: 1. mitochondrial short-chain preferring isomerase, 2. mitochondrial long-chain preferring isomerase, 3. peroxisomal isoenzyme, which is part of a multifunctional protein	3018	
Rattus norvegicus	monofunctional DELTA3-DELTA2-enoyl-CoA isomerase	649676	
Rattus norvegicus	trifunctional enzyme which exhibits the activities of EC 5.3.3.8, EC 4.2.1.17 and EC 1.1.1.35	3015	
Rattus sp.	rat mitochondrial enoyl-CoA isomerase	663340	
Saccharomyces cerevisiae	-	649113, 651339, 651909, 652858, 661257, 661258, 744209, 746625	
Saccharomyces cerevisiae BJ1991	-	661257, 661258	
Saccharomyces cerevisiae BY4733	-	744209	
Sus scrofa	-	3010, 3014	
Sus scrofa	hog	2999