5.5.1.12	D361A	lower turnover with geranylgeranyl diphosphate than wild-type	440067	
5.5.1.12	D391G/D392G	site-directed mutagenesis of DIDD motif residues, the mutant lacks type-B activity	719991	
5.5.1.12	D402A	lower turnover with geranylgeranyl diphosphate than wild-type	440067	
5.5.1.12	D402E	lower turnover with geranylgeranyl diphosphate than wild-type	440067	
5.5.1.12	D402N	lower turnover with geranylgeranyl diphosphate than wild-type	440067	
5.5.1.12	D404A	-	440067	
5.5.1.12	D404A	unreactive with geranylgeranyl diphosphate	440066	
5.5.1.12	D404E	lower turnover with geranylgeranyl diphosphate than wild-type	440067	
5.5.1.12	D404N	lower turnover with geranylgeranyl diphosphate than wild-type	440067	
5.5.1.12	D405A	lower turnover with geranylgeranyl diphosphate than wild-type	440067