6H77:
reference: An N-Terminal Extension to UBA5 Adenylation Domain Boosts UFM1 Activation: Isoform-Specific Differences in Ubiquitin-like Protein Activation., Soudah N, Padala P, Hassouna F, Kumar M, Mashahreh B, Lebedev AA, Isupov MN, Cohen-Kfir E, Wiener R, J Mol Biol. 2019 Feb 1;431(3):463-478. doi: 10.1016/j.jmb.2018.10.007. Epub 2018 , Nov 6. PMID: 30412706

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