6E4Q:
reference: A molecular switch orchestrates enzyme specificity and secretory granule morphology., Ji S, Samara NL, Revoredo L, Zhang L, Tran DT, Muirhead K, Tabak LA, Ten Hagen KG, Nat Commun. 2018 Aug 29;9(1):3508. doi: 10.1038/s41467-018-05978-9. PMID: 30158631

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