Fig. 1 | Nature Communications

Fig. 1

From: Native top-down mass spectrometry provides insights into the copper centers of membrane-bound methane monooxygenase

Fig. 1

The pMMO structure and location of the metal centers. In the crystal structure of Methylocystis sp. strain Rockwell-pMMO (4PHZ), there is a monocopper center in PmoB coordinated by residues His 29, His 133, and His 135 (CuB), and a monocopper center in PmoC coordinated by Asp 129, His 133, and His 146 (CuC). PmoA, PmoB, and PmoC are shown in pink, purple, and blue, respectively, with one of the three protomers highlighted. Copper ions are shown as yellow spheres

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