to taurine. The enzyme shows no conjugating activity with glycine, showing that it is a specific taurine conjugator. Acnat1 is mainly expressed in liver and kidney and the gene is localized in a gene cluster, together with two further acyltransferases, one of which conjugates bile acids to glycine and taurine. In conclusion, these data describe ACNAT1 as a new acyltransferase, involved in taurine conjugation of fatty acids in peroxisomes, identifying a novel pathway for production of N-acyltaurines as signaling molecules or for excretion of fatty acids.
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