2.5.1.108 | [4Fe-4S]-center |
cleavage of a S-adenosyl-L-methionine analogue, in which the 3-amino-3-carboxypropyl group is replaced with a 3-carboxyallyl group, yields a paramagnetic (S = 1/2) species, which is assigned to a complex formed between the reaction product, alpha-sulfinyl-3-butenoic acid, and the [4Fe-4S] cluster. Data support a pi-complex between the C=C double bond of alpha-sulfinyl-3-butenoic acid and the unique iron of the [4Fe-4S] cluster, i.e. a radical S-adenosyl-L-methionine-related [4Fe-4S]+ cluster forming an organometallic complex with an alkene |
738461 |