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2.5.1.83: hexaprenyl diphosphate synthase [(2E,6E)-farnesyl-diphosphate specific]

This is an abbreviated version!
For detailed information about hexaprenyl diphosphate synthase [(2E,6E)-farnesyl-diphosphate specific], go to the full flat file.

Reaction

(2E,6E)-farnesyl diphosphate
+ 3 isopentenyl diphosphate = 3 diphosphate +
all-trans-hexaprenyl diphosphate

Synonyms

C30PP synthase, COQ1, Coq1p, EC 2.5.1.33, hexaprenyl pyrophosphate synthetase, hexaprenyl-diphosphate synthase [(2E,6E)-farnesyl-diphosphate specific], HexPP synthase, HexPPs, HexPS

ECTree

     2 Transferases
         2.5 Transferring alkyl or aryl groups, other than methyl groups
             2.5.1 Transferring alkyl or aryl groups, other than methyl groups (only sub-subclass identified to date)
                2.5.1.83 hexaprenyl diphosphate synthase [(2E,6E)-farnesyl-diphosphate specific]

Inhibitors

Inhibitors on EC 2.5.1.83 - hexaprenyl diphosphate synthase [(2E,6E)-farnesyl-diphosphate specific]

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INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
1,2-Cyclohexanedione
results in a rapid loss of the component B activity. Component A is resistant, retaining the initial activity almost completely. Farnesyl diphosphate, isopentenyl diphosphate, farnesyl monophosphate and inorganic diphosphate protect the synthase against the inactivation by N-ethylmaleimide, farnesyl diphosphate being the most effective. The presence of Mg2+ is essential for the protection by isopentenyl diphosphate and inorganic diphosphate. For protection of the synthase activity against the inactivation by 2,3-butanedione, the presence of farnesyl diphosphate, isopentenyl diphosphate and Mg2+ is more effective than that of the individual substrates and Mg2+. Inorganic diphosphate provides substantial protection. In the absence of component A, the component B activity is not protected by any substrates or its analogue
2,3-Butanedione
results in a rapid loss of the component B activity. Component A is resistant, retaining the initial activity almost completely. Farnesyl diphosphate, isopentenyl diphosphate, farnesyl monophosphate and inorganic diphosphate protect the synthase against the inactivation by N-ethylmaleimide, farnesyl diphosphate being the most effective. The presence of Mg2+ is essential for the protection by isopentenyl diphosphate and inorganic diphosphate. For protection of the synthase activity against the inactivation by 2,3-butanedione, the presence of farnesyl diphosphate, isopentenyl diphosphate and Mg2+ is more effective than that of the individual substrates and Mg2+. Inorganic diphosphate provides substantial protection. In the absence of component A, the component B activity is not protected by any substrates or its analogue
7,11-dimethyl-2,6,10-dodecatrien-1-yl diphosphate
analogue of farnesyl diphosphate. Two aspartate-rich motifs and the other characteristic motifs in subunit HexB are located around the diphosphate part of 7,11-dimethyl-2,6,10-dodecatrien-1-yl diphosphate
iodoacetamide
results in a rapid loss of the component B activity. Component A is resistant, retaining the initial activity almost completely. Farnesyl diphosphate, isopentenyl diphosphate, farnesyl monophosphate and inorganic diphosphate protect the synthase against the inactivation by N-ethylmaleimide, farnesyl diphosphate being the most effective. The presence of Mg2+ is essential for the protection by isopentenyl diphosphate and inorganic diphosphate. For protection of the synthase activity against the inactivation by 2,3-butanedione, the presence of farnesyl diphosphate, isopentenyl diphosphate and Mg2+ is more effective than that of the individual substrates and Mg2+. Inorganic diphosphate provides substantial protection. In the absence of component A, the component B activity is not protected by any substrates or its analogue
N-ethylmaleimide
results in a rapid loss of the component B activity. Component A is resistant, retaining the initial activity almost completely. Farnesyl diphosphate, isopentenyl diphosphate, farnesyl monophosphate and inorganic diphosphate protect the synthase against the inactivation by N-ethylmaleimide, farnesyl diphosphate being the most effective. The presence of Mg2+ is essential for the protection by isopentenyl diphosphate and inorganic diphosphate. For protection of the synthase activity against the inactivation by 2,3-butanedione, the presence of farnesyl diphosphate, isopentenyl diphosphate and Mg2+ is more effective than that of the individual substrates and Mg2+. Inorganic diphosphate provides substantial protection. In the absence of component A, the component B activity is not protected by any substrates or its analogue
p-chloromercuribenzoate
results in a rapid loss of the component B activity. Component A is resistant, retaining the initial activity almost completely. Farnesyl diphosphate, isopentenyl diphosphate, farnesyl monophosphate and inorganic diphosphate protect the synthase against the inactivation by N-ethylmaleimide, farnesyl diphosphate being the most effective. The presence of Mg2+ is essential for the protection by isopentenyl diphosphate and inorganic diphosphate. For protection of the synthase activity against the inactivation by 2,3-butanedione, the presence of farnesyl diphosphate, isopentenyl diphosphate and Mg2+ is more effective than that of the individual substrates and Mg2+. Inorganic diphosphate provides substantial protection. In the absence of component A, the component B activity is not protected by any substrates or its analogue