3bwo

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L-tryptophan aminotransferaseL-tryptophan aminotransferase

Structural highlights

3bwo is a 6 chain structure with sequence from Arabidopsis thaliana. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.4Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

TAA1_ARATH L-tryptophan aminotransferase involved in auxin (IAA) biosynthesis. Can convert L-tryptophan and pyruvate to indole-3-pyruvic acid (IPA) and alanine. Catalyzes the first step in IPA branch of the auxin biosynthetic pathway. Required for auxin production to initiate multiple change in growth in response to environmental and developmental cues. It is also active with phenylalanine, tyrosine, leucine, alanine, methionine and glutamine. Both TAA1 and TAR2 are required for maintaining proper auxin levels in roots, while TAA1, TAR1 and TAR2 are required for proper embryo patterning. Involved in the maintenance of the root stem cell niches and required for shade avoidance.[1] [2] [3] [4]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

See Also

References

  1. Tao Y, Ferrer JL, Ljung K, Pojer F, Hong F, Long JA, Li L, Moreno JE, Bowman ME, Ivans LJ, Cheng Y, Lim J, Zhao Y, Ballare CL, Sandberg G, Noel JP, Chory J. Rapid synthesis of auxin via a new tryptophan-dependent pathway is required for shade avoidance in plants. Cell. 2008 Apr 4;133(1):164-76. PMID:18394996 doi:10.1016/j.cell.2008.01.049
  2. Stepanova AN, Robertson-Hoyt J, Yun J, Benavente LM, Xie DY, Dolezal K, Schlereth A, Jurgens G, Alonso JM. TAA1-mediated auxin biosynthesis is essential for hormone crosstalk and plant development. Cell. 2008 Apr 4;133(1):177-91. doi: 10.1016/j.cell.2008.01.047. PMID:18394997 doi:http://dx.doi.org/10.1016/j.cell.2008.01.047
  3. Yamada M, Greenham K, Prigge MJ, Jensen PJ, Estelle M. The TRANSPORT INHIBITOR RESPONSE2 gene is required for auxin synthesis and diverse aspects of plant development. Plant Physiol. 2009 Sep;151(1):168-79. doi: 10.1104/pp.109.138859. Epub 2009 Jul , 22. PMID:19625638 doi:http://dx.doi.org/10.1104/pp.109.138859
  4. 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, Kasahara H. The main auxin biosynthesis pathway in Arabidopsis. Proc Natl Acad Sci U S A. 2011 Nov 8;108(45):18512-7. doi:, 10.1073/pnas.1108434108. Epub 2011 Oct 24. PMID:22025724 doi:http://dx.doi.org/10.1073/pnas.1108434108

3bwo, resolution 2.40Å

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OCA