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Literature summary for 5.4.99.39 extracted from

  • Um, Y.; Jin, M.; Lee, D.; Kim, C.; Hong, C.; Lee, Y.; Kim, O.
    Functional characterization of the beta-amyrin synthase gene involved in platycoside biosynthesis in Platycodon grandiflorum (2017), Hortic. Environ. Biotechnol., 58, 613-619 .
No PubMed abstract available

Cloned(Commentary)

Cloned (Comment) Organism
gene bAS, DNA and amino acid sequence determination and analysis, sequence comparisons and phylogenetic tree, recombinant expression in Saccharomyces cerevisiae strain GIL77, real-time RT-PCR enzyme expression analysis, MS analysis metabolite identification Platycodon grandiflorus

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
(3S)-2,3-epoxy-2,3-dihydrosqualene Platycodon grandiflorus
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beta-amyrin
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r

Organism

Organism UniProt Comment Textmining
Platycodon grandiflorus A0A1Z2WUZ5
-
-

Source Tissue

Source Tissue Comment Organism Textmining
flower
-
Platycodon grandiflorus
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leaf
-
Platycodon grandiflorus
-
additional information about equal enzyme expression in the different tissues, quantitative tissue-specific real-time RT-PCR gene expression analysis Platycodon grandiflorus
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root
-
Platycodon grandiflorus
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stem
-
Platycodon grandiflorus
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
(3S)-2,3-epoxy-2,3-dihydrosqualene
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Platycodon grandiflorus beta-amyrin
-
r
additional information GC-MS analysis metabolite identification Platycodon grandiflorus ?
-
?

Subunits

Subunits Comment Organism
? x * 87996, sequence calculation Platycodon grandiflorus

Synonyms

Synonyms Comment Organism
bAS
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Platycodon grandiflorus
PlgOSC1
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Platycodon grandiflorus

General Information

General Information Comment Organism
evolution PlgOSC1 not only contains a DCTAE motif that is implicated in substrate binding, but also has four repeats of the QXXXGXW motif, which is a typical feature of the triterpene synthase superfamily. PlgOSC1 has a Try residue in the MWCYCR motif that plays a role in the formation of beta-amyrin Platycodon grandiflorus
metabolism the enzyme synthesizes beta-amyrin, a central precursor in the platycoside biosynthesis pathway, overview. 69 platycosides are identified from Platycodon grandiflorum Platycodon grandiflorus