Assertion: cytochrome's heme | /r/CapableOf | oh form tight 2.6 åhydrogen bond
Facets:
Source sentences:
text: The path ends below heme a 3 , where the Y288-OH and heme a 3 farnesyl-OH form a tight (2.6 Å) hydrogen bond that has been suggested to control the entrance of protons into the active site (3, 14, 27).