BAPT

Name:

Phenylpropanoyltransferase (BAPT, TAX7)

Reaction:

baccatin III + (3R)-3-amino-3-phenylpropanoyl-CoA → N-debenzoyl-(3'-RS)-2'-deoxytaxol + coenzyme A

Km:

5.6 uM for (3R)-3-amino-3-phenylpropanoyl-CoA; 68 uM for baccatin III; 2.4 uM for baccatin III and 4.9 uM beta-phenylalanoyl-CoA (Thornburg, 2015)

Kcat:

0.0583 ± 0.0010 s^-1 (Thornburg, 2015)

Enzyme Description:

BAPT is the enzyme that adds the C13 Taxol side chain partially formed to the Taxol backbone. It makes use of
CoA chemistry to add the side chain to the 13’ hydroxyl group of baccatin III.

Plasmid Map

Sequence

atgaagaagactgggagtttcgcggagttccacgttaatatgatcgagcgcgtgatggttcgtccttgccttccttcacctaagactattttgcctttgt ctgcgatcgataacatggcacgtgccttcagtaatgtcttactggtgtacgccgccaacatggatcgcgtcagcgcggacccggcaaaggttattcgtga ggcgcttagcaaggtattggtctactattacccttttgctggccgcttgcgtaacaaagaaaatggagagcttgaagtggagtgcacaggacaaggagta ttgtttttagaagccatggctgacagcgacctttcagtattaactgacctggacaactacaatcctagttttcagcagcttatctttagcttgccgcaag ataccgacatcgaggatttgcatttgttgatcgtacaggtcacacgcttcacatgtggtgggtttgttgtcggtgctaacgtctatggttccgcctgtga cgcaaaaggattcggtcaattcttacagtctatggcggagatggctcgcggagaagtaaagccctccatcgaaccaatctggaatcgcgaattggttaaa cttgagcactgtatgccttttcgtatgtcacacttgcagattattcacgcgccagtcattgaggagaagtttgtccagacatcgcttgtgatcaacttcg aaatcatcaaccatattcgtcgtcgcatcatggaagagcgtaaagagagcctgtcttctttcgaaattgttgccgcgttagtctggcttgcgaagattaa ggcgtttcaaattccacattccgaaaatgtgaaactgctgttcgccatggacctgcgccgctctttcaatccgccgctgccccatgggtattatgggaat gcatttgggatcgcttgcgcgatggacaacgtgcatgatctgttgtcgggtagcctgttgcgtaccattatgatcattaagaagtctaaattttccctgc ataaagaattaaattctaagacagttatgagtagttccgtagtggatgtaaataccaaatttgaggacgttgtgtcgatctccgactggcgccacagcat ttactacgaagtagactttggatggggagacgcaatgaatgtgagtacgatgcttcagcaacaagaacacgaaaaatcgctgccaacgtattttagtttt ttgcaatcgaccaagaatatgcctgacggtatcaagatgttaatgtttatgcctcctagtaaacttaagaaatttaagattgaaatcgaagccatgatta agaaatatgttacgaaggtatgcccttctaagctttgataa

Design Notes

Part digested with XbaI and SpeI from vector designed by Duke's 2016 team and ligated into digested PSB1C3. Original vector constructed by Gibson Assembly of BAPT Gblock into pSMART-HC-Amp vector.

Source

Origin from Pacific Yew Tree, Taxus brevifolia

References

Thornburg, C. (2015). Development of a four-step semi-biosynthesis of the anticancer drug paclitaxel and its analogues (Doctoral dissertation, Michigan State University).

TAX10

Name:

3'-N-debenzoyl-2'-deoxytaxol N-benzoyltransferase (TAX10, DBTNBT)

Reaction:

N-debenzoyl-(3'-RS)-taxol + benzoyl-CoA → Taxol + CoA + H⁺

Km:

420 uM for N-debenzoyl-(3'-RS)-taxol; 400 uM for benzoyl-CoA (Walker, Long, & Croteau, 2002)

Kcat:

1.5 ± 0.3 s^-1 (Walker, Long, & Croteau, 2002)

Enzyme Description:

The final step of the Taxol biosynthesis pathway is the addition of another benzoyl ring to the Taxol C13 side
chain. It makes use of a second benzoyl-CoA from the BadA enzyme production and makes use of the same
chemistry but with different substrate specificity for the later Taxol intermediate.

Sequence

aaaattaaagaggtatatattaatgtatcgattaaataaggaggaataaaccatgcaccatcaccatcaccatgagaaagcaggttccaccgactttcac gtaaaaaagttcgatcccgtaatggtcgctccttcgctgccgagcccaaaggcgaccgtccagttatcggtggtggattctctgaccatctgccgtggga tctttaatactttattggtttttaacgcaccagacaatatcagcgcagacccggtaaagattatccgtgaagcacttagtaaagtcttggtatattactt tccacttgcgggccgcttgcgttcgaaggagatcggtgaacttgaggtcgagtgtacgggcgatggcgcacttttcgtcgaagccatggtcgaggatacg atttcggttttacgtgacttagatgatcttaacccttcattccaacaacttgtgttttggcatccgttagatacggcgatcgaagatttacatcttgtca tcgtccaagttacgcgtttcacctgtggcggtattgccgttggcgtgacacttccacatagcgtatgcgacgggcgtggtgcggctcaattcgtcaccgc attagctgaaatggcacgcggagaggtcaaaccctctcttgagccaatttggaatcgtgaattgctgaaccccgaagaccctttgcatcttcagcttaac caatttgattctatctgccctccccctatgttagaggaacttggacaagcatcatttgtgatcaacgttgacactatcgaatacatgaaacaatgtgtga tggaagagtgcaatgagttttgctcatcgttcgaagtagtggcagcacttgtatggattgctcgcactaaggcattacaaattccacacacagagaatgt caagcttctgtttgctatggaccttcgcaagttgtttaatccacctctgccgaatggctactatggcaacgctatcggcaccgcgtacgccatggataat gttcaagacttgttaaatgggagccttcttcgtgcgattatgattatcaaaaaggcgaaggctgatttgaaagataattacagtcgttcgcgcgtcgtca caaacccgtacagtttggacgttaataagaaaagtgacaacatccttgcgttaagtgattggcgtcgcctgggtttctacgaagcggatttcgggtgggg tggtcctctgaacgtatcgtcacttcagcgtttagagaacggtctgccaatgttctcaacgtttctgtatctgttaccggctaagaacaaatctgatggt attaaactgcttctgagttgcatgcctccaacgactttgaaatcgttcaaaattgtaatggaggccatgattgagaagtacgtgagtaaggtatagtaa

Design Notes

Part digested with XbaI and SpeI from vector designed by Duke's 2016 team and ligated into digested PSB1C3. Original vector constructed by Gibson Assembly of BAPT Gblock into pSMART-LC-Kan vector.

Source

Origin from Pacific Yew Tree, Taxus brevifolia

References

Walker, K., Long, R., & Croteau, R. (2002). The final acylation step in Taxol biosynthesis: Cloning of the taxoid C13-side-chain N-benzoyltransferase from Taxus. Proceedings of the National Academy of Sciences of the United States of America, 99(14), 9166–9171. http://doi.org/10.1073/pnas.082115799