Process for the preparation of dipeptide

According to the present invention, the protein having a dipeptide synthesizing activity, DNA encoding the protein, a recombinant DNA containing the DNA, a transformant transformed with the recombinant DNA, a transformant and the like use protein preparation having a dipeptide synthesizing activity using method for producing a dipeptide using the protein having a dipeptide synthesizing activity, and transformant or culture of a microorganism producing a protein having a dipeptide synthesizing activity or the like as an enzyme source There dipeptide of the production method is provided.