ribulose bisphosphate carboxylase
- ribulose bisphosphate carboxylase
-
(= RUBISCO)
Enzyme responsible for CO2
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 CO2 -fixing enzyme in
C3 plants, and collaborates with
PEP carboxylasein CO2
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 known as Fraction 1 protein, the major
protein of leaves.
Dictionary of molecular biology.
2004.
Look at other dictionaries:
(ribulose-bisphosphate carboxylase)-lysine N-methyltransferase — In enzymology, a [ribulose bisphosphate carboxylase] lysine N methyltransferase (EC number|2.1.1.127) is an enzyme that catalyzes the chemical reaction:S adenosyl L methionine + [ribulose 1,5 bisphosphate carboxylase] lysine ightleftharpoons S… … Wikipedia
ribulose diphosphate carboxylase — (= RuDPC; RuDP carboxylase) See ribulose bisphosphate carboxylase … Dictionary of molecular biology
ribulose-1,5-bisphosphate carboxylase — A dimerizing carboxy lyase; an enzyme that catalyzes the addition of carbon dioxide to d ribulose 1,5 bisphosphate and the hydrolysis of the addition product to two molecules of 3 d phosphoglyceric acid, a key reaction in the fixation of CO2 in… … Medical dictionary
ribulose-1,5-bisphosphate carboxylase — (ri bu lōs) The enzyme that catalyzes the incorporation of CO2 in the Calvin cycle … Dictionary of microbiology
Ribulose-1,5-Bisphosphat-Carboxylase — RuBisCO Lange Kette (Arabidopsis thaliana) RuBisCO Moleküle. Links: von Pflanzen und Algen (16 me … Deutsch Wikipedia
Ribulose-1,5-bisphosphat-carboxylase/-oxygenase — RuBisCO Lange Kette (Arabidopsis thaliana) RuBisCO Moleküle. Links: von Pflanzen und Algen (16 me … Deutsch Wikipedia
RUDP carboxylase — See ribulose bisphosphate carboxylase … Dictionary of molecular biology
Ribulose-1,5-bisphosphat — Strukturformel Allgemeines Name Ribulose 1,5 bisphosphat Andere Namen … Deutsch Wikipedia
Ribulose-1,5-diphosphate — D ribulose 1,5 diphosphate Structure du D ribulose 1,5 diphosphate … Wikipédia en Français
carboxylase — 1. One of several carboxy lyases, trivially named carboxylases or decarboxylases (EC 4.1.1.x), catalyzing the addition of CO2 to all or part of another molecule to create an additional COOH group ( e.g., ribulose 1,5 bisphosphate c.). 2. Obsolete … Medical dictionary
