2ECF:
reference: Dipeptidyl aminopeptidase IV from Stenotrophomonas maltophilia exhibits activity against a substrate containing a 4-hydroxyproline residue., Nakajima Y, Ito K, Toshima T, Egawa T, Zheng H, Oyama H, Wu YF, Takahashi E, Kyono K, Yoshimoto T, J Bacteriol. 2008 Dec;190(23):7819-29. Epub 2008 Sep 26. PMID: 18820015

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