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. Author manuscript; available in PMC: 2022 Aug 1.
Published in final edited form as: J Biol Inorg Chem. 2021 Jul 6;26(5):583–597. doi: 10.1007/s00775-021-01876-6

Fig. 1.

Fig. 1

a) MMP-1•triple-helical peptide (THP) complex. b) Catalytic site with Zn(II) coordinated to H199, H203, and H209. c) Structural site with Zn(II) coordinated to H149, D151, H164, H177.