Phosphoribulokinase

Phosphoribulokinase

In enzymology, a phosphoribulokinase (EC number|2.7.1.19) is an enzyme that catalyzes the chemical reaction

:ATP + D-ribulose 5-phosphate ightleftharpoons ADP + D-ribulose 1,5-bisphosphate

Thus, the two substrates of this enzyme are ATP and D-ribulose 5-phosphate, whereas its two products are ADP and D-ribulose 1,5-bisphosphate.

This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing groups (phosphotransferases) with an alcohol group as acceptor. The systematic name of this enzyme class is ATP:D-ribulose-5-phosphate 1-phosphotransferase. Other names in common use include phosphopentokinase, ribulose-5-phosphate kinase, phosphopentokinase, phosphoribulokinase (phosphorylating), 5-phosphoribulose kinase, ribulose phosphate kinase, PKK, PRuK, and PRK. This enzyme participates in carbon fixation.

tructural studies

As of late 2007, only one structure has been solved for this class of enzymes, with the PDB accession code PDB link|1A7J.

References

*
*

External links

::"The CAS registry number for this enzyme class is CAS registry|9030-60-8."

Gene Ontology (GO) codes


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • phosphoribulokinase — An enzyme that, in the presence of ATP, catalyzes the phosphorylation of d ribulose 5 phosphate to d ribulose 1,5 bisphosphate and ADP, a reaction of importance in the carbon dioxide fixation cycle of photosynthesis …   Medical dictionary

  • Calvin cycle — s or dark reactions.OverviewDuring photosynthesis, light energy is used to generate chemical free energy, stored in glucose. The light independent Calvin cycle, also (misleadingly) known as the dark reaction or dark stage , uses the energy from… …   Wikipedia

  • List of EC numbers (EC 2) — This list contains a list of EC numbers for the second group, EC 2, transferases, placed in numerical order as determined by the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology.EC 2.1: Transferring One… …   Wikipedia

  • photosynthesis — photosynthetic /foh teuh sin thet ik/, adj. photosynthetically, adv. /foh teuh sin theuh sis/, n. Biol., Biochem. (esp. in plants) the synthesis of complex organic materials, esp. carbohydrates, from carbon dioxide, water, and inorganic salts,… …   Universalium

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”