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Very - long - chain acyl - CoA dehydrogenase ( VLCAD ) is one of four straight - chain acyl - CoA dehydrogenase ( ACD ) enzymes , which are all nuclear encoded mitochondrial flavoproteins catalyzing the initial step in fatty acid beta - oxidation .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
Answer:
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