1.14.18.3	Co2+	the enzyme contains three Co2+ ions per enzyme molecule	672301	
1.14.18.3	copper	an anomalous site modeled as a dinuclear copper cluster. The mononuclear copper site is absent (one His is not conserved), and the zinc replaced by a copper ion	703343	
1.14.18.3	copper	contains 2.3 copper ions per 100 kDa protomer	727340	
1.14.18.3	copper	contains 20.8 copper ions per 100 kDa protomer	727340	
1.14.18.3	copper	contains 4.8 copper ions per 100 kDa protomer	727340	
1.14.18.3	copper	contains both mononuclear copper and a copper-containing cluster. Each 200000 Da pMMO complex contains 4.8 copper ions. The purified particulate methane monooxygenase is a mixture of Cu(I) and Cu(II) oxidation states	660351	
1.14.18.3	copper	regulates the metabolic switch between the methane monooxygenase and the methane monooxygenase-NADH:quinone oxidoreductase complex, also regulates the level of expression of the pMMO and the development of internal membranes	659033	
1.14.18.3	copper	required, activates	671965	
1.14.18.3	copper	the enzyme contains 13 copper ions	728079	
1.14.18.3	copper	the enzyme contains a dicopper center	727681