4Z7X:
reference: A Disulfide Bond-forming Machine Is Linked to the Sortase-mediated Pilus Assembly Pathway in the Gram-positive Bacterium Actinomyces oris., Reardon-Robinson ME, Osipiuk J, Chang C, Wu C, Jooya N, Joachimiak A, Das A, Ton-That H, J Biol Chem. 2015 Aug 28;290(35):21393-405. doi: 10.1074/jbc.M115.672253. Epub, 2015 Jul 13. PMID: 26170452

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