3TRS:
reference: The crystal structure of an intermediate dimer of aspergilloglutamic peptidase that mimics the enzyme-activation product complex produced upon autoproteolysis., Sasaki H, Kubota K, Lee WC, Ohtsuka J, Kojima M, Iwata S, Nakagawa A, Takahashi K, Tanokura M, J Biochem. 2012 Jul;152(1):45-52. Epub 2012 May 7. PMID: 22569035

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