See Also: ribulose bisphosphate carboxylase(medicine)
ribulose-1,5-bisphosphate carboxylase(medicine)
ribulose-1,5-bisphosphate carboxylase-oxygenase large subunit epsilonN-methyltransferase(medicine)
ribulose 1,5 bisphosphate(medicine)
ribulose diphosphate carboxylase(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
ribulose(dictionary)
Ribulose(medicine)
d-glucose 1,6-bisphosphate(medicine)
phosphatidylinositol 4,5-bisphosphate(medicine)

bite fork (medicine) and ribulose bisphosphate carboxylase (medicine)


bite fork (medicine)


bite fork -->
face-bow fork
<dentistry> That part of the face-bow assemblage used to attach the maxillary trial base to the face-bow proper.

Synonym: bite fork.


ribulose bisphosphate carboxylase (medicine)


ribulose bisphosphate carboxylase
<enzyme> A copper protein that catalyses the formation of 2 moles of 3-phosphoglycerate from ribulose 1,5-biphosphate in the presence of carbon dioxide and is responsible for carbon dioxide fixation in photosynthesis.

Carbon dioxide is combined with ribulose diphosphate to give two molecules of 3 phosphoglycerate, as part of the Calvin Benson cycle. It is the sole carbon dioxide fixing enzyme in C3 plants and collaborates with PEP carboxylase in carbon dioxide fixation in C4 plants.

In the presence of oxygen the products of the reaction are one molecule of phosphoglyceric acid and one molecule of phosphoglycolic acid. The latter is the initial substrate for photorespiration and this oxygenase function occurs in C3 plants where the enzyme is not protected from ambient oxygen, in C4 plants the enzyme acts exclusively as a carboxylase since it is protected from oxygen.

Also called Fraction 1 protein, the major protein of leaves.

Chemical name: 3-Phospho-D-glycerate carboxy-lyase (dimerizing)

Registry number: EC 4.1.1.39