EOG841SSX	GO:0009055	1/59	electron carrier activity	molecular_function	"Any molecular entity that serves as an electron acceptor and electron donor in an electron transport chain. An electron transport chain is a process in which a series of electron carriers operate together to transfer electrons from donors to any of several different terminal electron acceptors to generate a transmembrane electrochemical gradient." [ISBN:0198506732]
EOG841SSX	GO:0051536	1/59	iron-sulfur cluster binding	molecular_function	"Interacting selectively and non-covalently with an iron-sulfur cluster, a combination of iron and sulfur atoms." [GOC:ai]