Nucleotide sequence encoding a novel member of the hydratase/dehydrogenase family.

The nucleotide sequence encoding a novel member of the family of fatty acid oxidation enzymes has been determined. Clones were generated from porcine gastric corpus cDNA by application of the polymerase chain reaction (PCR) using oligodeoxyribonucleotides based on the amino acid sequence of a 78 kDa gastrin-binding protein isolated from porcine gastric mucosal membranes (Baldwin et al., J. Biol. Chem. 261 (1986) 12252-12257). Clones encoding the 3' and 5' ends of the cDNA were then isolated by conventional screening of a porcine liver cDNA library, and by application of anchored PCR, respectively. The composite cDNA of 2744 nucleotides encoded a protein of 763 amino acids, the sequence of which was related to a rat peroxisomal trifunctional enzyme, delta 3, delta 2-enoyl-CoA isomerase/enoyl-CoA hydratase/3-hydroxyacyl-CoA dehydrogenase, and to other members of the same enzyme family. Northern blots indicated that the 3-kb mRNA encoding the novel protein was abundant in gastric corpus and liver, with lower amounts also present in gastric antrum and forestomach.

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