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{{Infobox enzyme
| Name = L-tryptophan---pyruvate aminotransferase
| EC_number = 2.6.1.99
| CAS_number = 
| IUBMB_EC_number = 2/6/1/99
| GO_code = 
| image = 
| width = 
| caption =
}}
'''L-tryptophan---pyruvate aminotransferase''' ({{EC number|2.6.1.99}}, ''TAA1 (gene)'', ''vt2 (gene)'') is an [[enzyme]] with system name ''L-tryptophan:pyruvate aminotransferase''.<ref>{{cite journal | title = Rapid synthesis of auxin via a new tryptophan-dependent pathway is required for shade avoidance in plants |author = Tao, Y., Ferrer, J.L., Ljung, K., Pojer, F., Hong, F., Long, J.A., Li, L., Moreno, J.E., Bowman, M.E., Ivans, L.J., Cheng, Y., Lim, J., Zhao, Y., Ballare, C.L., Sandberg, G., Noel, J.P. and Chory, J. |journal = Cell |year = 2008 |volume = 133 |pages = 164–176 |pmid = 18394996 |doi=10.1016/j.cell.2008.01.049}}</ref><ref>{{cite journal | title = The main auxin biosynthesis pathway in ''Arabidopsis'' |author = Mashiguchi, K., Tanaka, K., Sakai, T., Sugawara, S., Kawaide, H., Natsume, M., Hanada, A., Yaeno, T., Shirasu, K., Yao, H., McSteen, P., Zhao, Y., Hayashi, K., Kamiya, Y. and Kasahara, H. |journal = Proc. Natl. Acad. Sci. USA |year = 2011 |volume = 108 |pages = 18512–18517 |pmid = 22025724 |doi=10.1073/pnas.1108434108 |pmc=3215075}}</ref><ref>{{cite journal | title = vanishing tassel2 encodes a grass-specific tryptophan aminotransferase required for vegetative and reproductive development in maize |author = Phillips, K.A., Skirpan, A.L., Liu, X., Christensen, A., Slewinski, T.L., Hudson, C., Barazesh, S., Cohen, J.D., Malcomber, S. and McSteen, P. |journal = Plant Cell |year = 2011 |volume = 23 |pages = 550–566 |pmid = 21335375 |doi=10.1105/tpc.110.075267}}</ref><ref>{{cite journal | title = Auxin biosynthesis: a simple two-step pathway converts tryptophan to indole-3-acetic acid in plants |author = Zhao, Y. |journal = Mol. Plant |year = 2012 |volume = 5 |pages = 334–338 |pmid = 22155950 |doi=10.1093/mp/ssr104 |pmc=3309920}}</ref> This enzyme [[catalysis|catalyses]] the following [[chemical reaction]]

: L-[[tryptophan]] + [[pyruvate]] <math>\rightleftharpoons</math> indole-3-pyruvate + L-[[alanine]]

This plant enzyme, along with [[EC 1.14.13.168]], indole-3-pyruvate monooxygenase, is responsible for the biosynthesis of the plant hormone [[indole-3-acetate]] from L-[[tryptophan]].

== References ==
{{reflist}}

== External links ==
* {{MeshName|L-tryptophan---pyruvate+aminotransferase}}

{{DEFAULTSORT:L-tryptophan-pyruvate aminotransferase}}
[[Category:EC 2.6.1]]