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Literature summary for 2.5.1.20 extracted from

  • Post, J.; van Deenen, N.; Fricke, J.; Kowalski, N.; Wurbs, D.; Schaller, H.; Eisenreich, W.; Huber, C.; Twyman, R.M.; Pruefer, D.; Gronover, C.S.
    Laticifer-specific cis-prenyltransferase silencing affects the rubber, triterpene, and inulin content of Taraxacum brevicorniculatum (2012), Plant Physiol., 158, 1406-1417.
    View publication on PubMedView publication on EuropePMC
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Cloned(Commentary)

Cloned (Comment) Organism
expression of isozymes TbCPT1, TbCPT2, and TbCPT3 associated with rubber particles in transgenic Taraxacum brevicorniculatum plants Taraxacum brevicorniculatum

Protein Variants

Protein Variants Comment Organism
additional information CPT-RNAi plants show a significant reduction in rubber biosynthesis and a corresponding 50% increase in the levels of triterpenes and the main storage carbohydrate, inulin Taraxacum brevicorniculatum

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
polycis-polyprenyl diphosphate + isopentenyl diphosphate Taraxacum kok-saghyz
-
 diphosphate + a polycis-polyprenyl diphosphate longer by one C5 unit
-
 ?
polycis-polyprenyl diphosphate + isopentenyl diphosphate Taraxacum brevicorniculatum
-
 diphosphate + a polycis-polyprenyl diphosphate longer by one C5 unit
-
 ?

Organism

Organism UniProt Comment Textmining
Taraxacum brevicorniculatum
-
 isozymes TbCPT1, TbCPT2, and TbCPT3
-
Taraxacum kok-saghyz
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
latex the milky cytoplasm of specialized cells known as laticifers Taraxacum kok-saghyz
-
latex the milky cytoplasm of specialized cells known as laticifers Taraxacum brevicorniculatum
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
polycis-polyprenyl diphosphate + isopentenyl diphosphate
-
 Taraxacum kok-saghyz diphosphate + a polycis-polyprenyl diphosphate longer by one C5 unit
-
 ?
polycis-polyprenyl diphosphate + isopentenyl diphosphate
-
 Taraxacum brevicorniculatum diphosphate + a polycis-polyprenyl diphosphate longer by one C5 unit
-
 ?

Synonyms

Synonyms Comment Organism
chain-elongating enzyme cis-prenyltransferase
-
 Taraxacum kok-saghyz
chain-elongating enzyme cis-prenyltransferase
-
 Taraxacum brevicorniculatum
CPT
-
 Taraxacum kok-saghyz
CPT
-
 Taraxacum brevicorniculatum
laticifer-specific rubber-forming enzyme
-
 Taraxacum kok-saghyz
laticifer-specific rubber-forming enzyme
-
 Taraxacum brevicorniculatum

Expression

Organism Comment Expression
Taraxacum brevicorniculatum CPT expression is reduced by laticifer-specific RNA interference, CPT-RNAi down

General Information

General Information Comment Organism
malfunction CPT-RNAi plants indicate a significant reduction in rubber biosynthesis and a corresponding 50% increase in the levels of triterpenes and inulin, the primary storage carbohydrate compared to wild-type plants. The laticifers in CPT-RNAi plants contained fewer and smaller rubber particles than wild-type laticifers. And a decrease is noted in the activity of hydroxymethylglutaryl-CoA reductase, a key enzyme in the mevalonate pathway, reflecting homeostatic control of the isopentenyl diphosphate pool, CPT RNAi silencing phenotypes, overview Taraxacum brevicorniculatum
physiological function the species produce large amounts of high-quality natural rubber in its latex. This high-molecular mass biopolymer consists mainly of poly(cis-1,4-isoprene) and is deposited in rubber particles by particle-bound enzymes that carry out the condensation of isopentenyl diphosphate units. Large polymer formation is carried out by the chain-elongating enzyme cis-prenyltransferase, CPT Taraxacum kok-saghyz
physiological function the species produce large amounts of high-quality natural rubber in its latex. This high-molecular mass biopolymer consists mainly of poly(cis-1,4-isoprene) and is deposited in rubber particles by particle-bound enzymes that carry out the condensation of isopentenyl diphosphate units. Large polymer formation is carried out by the chain-elongating enzyme cis-prenyltransferase, CPT Taraxacum brevicorniculatum