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Literature summary extracted from

  • Phillips, K.; Skirpan, A.; Liu, X.; Christensen, A.; Slewinski, T.; Hudson, C.; Barazesh, S.; Cohen, J.; Malcomber, S.; McSteen, P.
    Vanishing tassel2 encodes a grass-specific tryptophan aminotransferase required for vegetative and reproductive development in maize (2011), Plant Cell, 23, 550-566.
    View publication on PubMedView publication on EuropePMC

Cloned(Commentary)

EC Number Cloned (Comment) Organism
2.6.1.99 gene vt2, DNA and amino acid sequence determination and analysis, positional cloning of vt2, phylogenetic analysis Zea mays

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
2.6.1.99 L-tryptophan + pyruvate Zea mays
-
 indole-3-pyruvate + L-alanine
-
 ?

Organism

EC Number Organism UniProt Comment Textmining
2.6.1.27 Zea mays F2FB37
-
-
2.6.1.99 Zea mays
-
 gene vanishing tassel2, vt2
-

Source Tissue

EC Number Source Tissue Comment Organism Textmining
2.6.1.99 epidermis of axillary meristems Zea mays
-
2.6.1.99 flower
-
 Zea mays
-
2.6.1.99 inflorescence meristem
-
 Zea mays
-
2.6.1.99 stem
-
 Zea mays
-
2.6.1.99 vascular system in the inflorescence stem Zea mays
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2.6.1.99 L-tryptophan + pyruvate
-
 Zea mays indole-3-pyruvate + L-alanine
-
 ?

Synonyms

EC Number Synonyms Comment Organism
2.6.1.27 TAA1
-
 Zea mays
2.6.1.27 vanishing tassel2
-
 Zea mays
2.6.1.27 vt2
-
 Zea mays

General Information

EC Number General Information Comment Organism
2.6.1.27 malfunction vt2 mutants have dramatic effects on vegetative and reproductive development. vt2 mutants share many similarities with sparse inflorescence1 (spi1) mutants in maize. both spi1 and vt2 single mutants exhibit a reduction in free auxin levels, but the spi1 vt2 double mutants do not have a further reduction compared with vt2 single mutants Zea mays
2.6.1.99 evolution origin for the vt2/vt2-like clade at least near the base of the grass family and possibly deeper within monocots Zea mays
2.6.1.99 malfunction vt2 mutants have dramatic effects on vegetative and reproductive development, decrease in leaf number in vt2 mutants, reduced tassel length in vt2 mutants is likely due to reduced cell elongation. In addition to male inflorescence defects, vt2 mutants also show severe defects in the female inflorescence, absence of branches and spikelets in vt2 inflorescences. spi1/vt2 double mutants have only a slightly more severe phenotype than vt2 single mutants. Both spi1 and vt2 single mutants exhibit a reduction in free auxin levels, but the spi1/vt2 double mutants do not have a further reduction compared with vt2 single mutants Zea mays
2.6.1.99 metabolism vt2 converts Trp to indole-3-pyruvic acid in one of four hypothesized Trp-dependent auxin biosynthesis pathways. Both spi1 and vt2 function in auxin biosynthesis in maize, possibly in the same pathway rather than independently Zea mays
2.6.1.99 physiological function vt2 functions in axillary meristem formation during inflorescence development, but vt2 does not function in axillary meristem formation during vegetative development Zea mays