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Literature summary extracted from

  • Herrera-Rodriguez, M.B.; Maldonado, J.M.; Perez-Vicente, R.
    Light and metabolic regulation of HAS1, HAS1.1 and HAS2, three asparagine synthetases genes in Helianthus anuus (2004), Plant Physiol. Biochem., 42, 511-518.
    View publication on PubMed

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
6.3.5.4 ATP + L-Asp + L-Gln Helianthus annuus light, carbon and nitrogen availability control asparagine synthesis in sunflower by regulating three aspargine synthetase coding genes. HAS2 expression requires light and is positively affected by sucrose. HAS1 and HAS1.1 expression is dependent on nitrogen availability, while HAS2 transcripts are still found in N-starved plants. High ammonium level induces all three asparagine synthetase genes and partially reverts sucrose repression of HAS1 and HAS1.1 AMP + diphosphate + L-Asn + L-Glu
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Organism

EC Number Organism UniProt Comment Textmining
6.3.5.4 Helianthus annuus
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Source Tissue

EC Number Source Tissue Comment Organism Textmining
6.3.5.4 leaf
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 Helianthus annuus
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6.3.5.4 root
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 Helianthus annuus
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Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
6.3.5.4 ATP + L-Asp + L-Gln light, carbon and nitrogen availability control asparagine synthesis in sunflower by regulating three aspargine synthetase coding genes. HAS2 expression requires light and is positively affected by sucrose. HAS1 and HAS1.1 expression is dependent on nitrogen availability, while HAS2 transcripts are still found in N-starved plants. High ammonium level induces all three asparagine synthetase genes and partially reverts sucrose repression of HAS1 and HAS1.1 Helianthus annuus AMP + diphosphate + L-Asn + L-Glu
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 ?