4.2.3.113 A595G shift in product profile, mutant produces 2.4% (+)-car-3-ene, 39% (-)-sabinene, 33.3% terpinolene 730053 4.2.3.113 A595G/F596L/L599F shift in product profile, mutant produces 42.3% (+)-car-3-ene, 7.3% (-)-sabinene, 20.1% terpinolene 730053 4.2.3.113 F596E shift in product profile, mutant produces 0.5% (+)-car-3-ene, 10.2% (-)-sabinene, 5.7% terpinolene, 70.9% limonene 730053 4.2.3.113 F596G shift in product profile, mutant produces 10.0% (+)-car-3-ene, 11.2% (-)-sabinene, 17.3% terpinolene, 27.0% myrcene, 17.0% limonene 730053 4.2.3.113 F596H shift in product profile, mutant produces 2.1% (+)-car-3-ene, 46.5% (-)-sabinene, 27.1% terpinolene 730053 4.2.3.113 F596L shift in product profile, mutant produces 28.6% (+)-car-3-ene, 42.8% (-)-sabinene, 36.4% terpinolene 730053 4.2.3.113 F596R inactive 730053 4.2.3.113 G595A/L596F/F599L shift in product profile, mutant produces 1.8% (+)-car-3-ene, 23.3% (-)-sabinene, 55.2% terpinolene 730053 4.2.3.113 G595A/L596F/F599L shift in product profile, mutant produces 4.7% (+)-car-3-ene, 47.4% (-)-sabinene, 35.2% terpinolene 730053 4.2.3.113 G595A/L596F/F599L shift in product profile, mutant produces 5.4% (+)-car-3-ene, 29.0% (-)-sabinene, 26.4% terpinolene 730053 4.2.3.113 L596F shift in product profile, mutant produces 12.3% (+)-car-3-ene, 37.4% (-)-sabinene, 35.4% terpinolene 730053 4.2.3.113 L596F shift in product profile, mutant produces 5% (+)-car-3-ene, 20.9% (-)-sabinene, 53.5% terpinolene 730053 4.2.3.113 L596F shift in product profile, mutant produces 9.2% (+)-car-3-ene, 20.2% (-)-sabinene, 32.2% terpinolene 730053 4.2.3.113 L599F shift in product profile, mutant produces 1.5% (+)-car-3-ene, 20.2% (-)-sabinene, 32.2% terpinolene 730053 4.2.3.113 additional information construction of a series of domain swaps and site-directed substitutions between (-)-sabinene synthase and (+)-3-carene synthase isoforms to explore which regions and specific amino acids of these enzymes affect the differences of their product profiles. The amino acid in position 596 is critical for product profiles dominated by (+)-3-carene in (+)-3-carene synthase isoforms. A leucine in this position promotes formation of (+)-3-carene, whereas phenylalanine promotes (-)-sabinene 730053 4.2.3.113 additional information construction of a series of domain swaps and site-directed substitutions between (-)-sabinene synthase and (+)-3-carene synthase isoforms to explore which regions and specific amino acids of these enzymes affect the differences of their product profiles. The amino acid in position 596 is critical for product profiles dominated by or (-)-sabinene. A leucine in this position promotes formation of (+)-3-carene, whereas phenylalanine promotes (-)-sabinene 730053 4.2.3.113 S589A shift in product profile, mutant produces 1.2% (+)-car-3-ene, 42.9% (-)-sabinene, 35.5% terpinolene 730053