1.14.99.58	F117Y	no change in regioselectivity	661923	
1.14.99.58	F189A	the heme degradation activity of the mutant is similar to that of the wild-type enzyme. The mutant produces only beta- and delta-biliverdins, but no alpha-biliverdin	742737	
1.14.99.58	F189G	the heme degradation activity of the mutant is similar to that of the wild-type enzyme. The mutant produces only beta- and delta-biliverdins, but no alpha-biliverdin	742737	
1.14.99.58	F189L	the heme degradation activity of the mutant is similar to that of the wild-type enzyme. The mutant produces only beta- and delta-biliverdins, but no alpha-biliverdin	742737	
1.14.99.58	F189T	the heme degradation activity of the mutant is similar to that of the wild-type enzyme. The mutant produces only beta- and delta-biliverdins, but no alpha-biliverdin	742737	
1.14.99.58	G125V	single-phase kinetics of transfer of heme from heme-binding protein PhuS	678146	
1.14.99.58	H26A/K34A/K132A	inactive	742894	
1.14.99.58	K132A	the heme degradation activity of the mutant is similar to that of the wild-type enzyme, but the mutant produces 12% of alpha-biliverdin in addition to the formation of normal beta- (26%) and delta- (62%) biliverdins	742737	
1.14.99.58	K34A	the heme degradation activity of the mutant is similar to that of the wild-type enzyme, but the mutant produces 11% of alpha-biliverdin in addition to the formation of normal beta- (34%) and delta- (55%) biliverdins	742737	
1.14.99.58	K34A/K132A	the heme degradation activity of the mutant is similar to that of the wild-type enzyme, but the mutant produces 18% of alpha-biliverdin in addition to the formation of normal beta- (27%) and delta- (56%) biliverdins	742737