The characterization of two diazepam binding inhibitor (DBI) transcripts in humans.

We have investigated the expression of diazepam binding inhibitor (DBI) (also called acyl-CoA-binding protein or endozepine) transcripts in different human tissues and tissue culture cell lines by reverse-transcriptase assisted PCR and RNase protection assay. Two different DBI transcripts capable of encoding polypeptides of 86 and 104 amino acids were detected in all the human tissues and cell lines studied. The transcript coding for the 86 amino acid DBI polypeptide was found to represent the majority of the total DBI transcript pool.