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Field | Value |
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Namespace | Molecular function |
Short description | Jasmonate-amino synthetase activity |
Full defintion | Catalysis of the reaction: jasmonate + an amino acid = an amide-linked jasmonyl-amino acid conjugate. The substrates of this reaction include non-standard amino acids, such as ACC (1-aminocyclopropane-1-carboxylate). |
Subterm of |
The relationship of GO:0080123 with other GO terms.
Relationship type | GO terms |
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Is a | |
Regulates | n.a. |
Part of | n.a. |
Positively regulates | n.a. |
Negatively regulates | n.a. |
A force layout showing the ancestor tree for GO:0080123, and its immediate children. If you wish to explore the tree dynamically, please use the GO Explorer.
This table contains additional metadata associated with the GO entry's definition field.
Field | Value |
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PMID | Substrate specificity and products of side-reactions catalyzed by jasmonate:amino acid synthetase (JAR1). FEBS Lett. 2007 Mar 6; 581 (5): 815–20.PMID: 17291501 Jasmonate:amino acid synthetase (JAR1) is involved in the function of jasmonic acid (JA) as a plant hormone. It catalyzes the synthesis of several JA-amido conjugates, the most important of which appears to be JA-Ile. Structurally, JAR1 is a member of the firefly luciferase superfamily that comprises enzymes that adenylate various organic acids. This study analyzed the substrate specificity of recombinant JAR1 and determined whether it catalyzes the synthesis of mono- and dinucleoside polyphosphates, which are side-reaction products of many enzymes forming acyl approximately adenylates. Among different oxylipins tested as mixed stereoisomers for substrate activity with JAR1, the highest rate of conversion to Ile-conjugates was observed for (+/-)-JA and 9,10-dihydro-JA, while the rate of conjugation with 12-hydroxy-JA and OPC-4 (3-oxo-2-(2Z-pentenyl)cyclopentane-1-butyric acid) was only about 1-2% that for (+/-)-JA. Of the two stereoisomers of JA, (-)-JA and (+)-JA, rate of synthesis of the former was about 100-fold faster than for (+)-JA. Finally, we have demonstrated that (1) in the presence of ATP, Mg(2+), (-)-JA and tripolyphosphate the ligase produces adenosine 5'-tetraphosphate (p(4)A); (2) addition of isoleucine to that mixture halts the p(4)A synthesis; (3) the enzyme produces neither diadenosine triphosphate (Ap(3)A) nor diadenosine tetraphosphate (Ap(4)A) and (4) Ap(4)A cannot substitute ATP as a source of adenylate in the complete reaction that yields JA-Ile. |
GO predictions are based solely on the InterPro-to-GO mappings published by EMBL-EBI, which are in turn based on the mapping of predicted domains to the InterPro dataset. The InterPro-to-GO mapping was last updated on , while the GO metadata was last updated on .
Transcript | Name | Description | GO terms | GO count |
---|---|---|---|---|
– | 4 | |||
– | 4 | |||
– | PREDICTED: probable indole-3-acetic acid-amido synthetase GH3.5-like [Glycine max] gi|356520302|ref|XP_003528802.1| | 4 | ||
– | PREDICTED: probable indole-3-acetic acid-amido synthetase GH3.5-like [Glycine max] gi|356520302|ref|XP_003528802.1| | 4 |
A list of co-occurring GO terms within the L. japonicus gene space:
GO term | Namespace | Name | Observations | Saturation (%) |
---|---|---|---|---|
Molecular function | Jasmonate-amino synthetase activity | 1 | 25.00 |