2N8R:
reference: 1H, 13C, and 15N peak assignments and secondary structure of human macrophage metalloelastase (MMP-12) in its inhibitor-free state., Bhaskaran R, Van Doren SR, J Biomol NMR. 2006;36 Suppl 1:55. Epub 2006 Jul 20. PMID: 16855860

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