About: Phosphopentose epimerase

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Phosphopentose epimerase (also known as ribulose-phosphate 3-epimerase and ribulose 5-phosphate 3-epimerase, EC 5.1.3.1) encoded by the RPE gene is a metalloprotein that catalyzes the interconversion between D-ribulose 5-phosphate and D-xylulose 5-phosphate. D-ribulose 5-phosphate D-xylulose 5-phosphate This reversible conversion is required for carbon fixation in plants – through the Calvin cycle – and for the nonoxidative phase of the pentose phosphate pathway. This enzyme has also been implicated in additional pentose and glucuronate interconversions.

Attributes	Values
rdf:type	Thing Biomolecule Biomolecule Enzyme yago:Abstraction100002137 yago:Activator114723079 yago:Catalyst114723628 yago:Chemical114806838 yago:Compound114818238 yago:Enzyme114732946 yago:Macromolecule114944888 yago:Material114580897 yago:Matter100020827 yago:Molecule114682133 yago:OrganicCompound114727670 yago:Part113809207 yago:PhysicalEntity100001930 yago:Protein114728724 yago:Relation100031921 enzyme yago:Substance100019613 yago:Thing100002452 yago:Unit109465459 yago:WikicatEnzymesOfKnownStructure
rdfs:label	Ribulosephosphat-3-Epimerase (de) Phosphopentose épimérase (fr) リブロース-5-リン酸-3-エピメラーゼ (ja) Phosphopentose epimerase (en)
rdfs:comment	Ribulosephosphat-3-Epimerase (RPE) ist das Enzym, das die Umwandlung von Ribulose-5-phosphat in Xylulose-5-phosphat katalysiert. Diese Reaktion ist ein Teilschritt im Pentosephosphatweg in allen Lebewesen, und bei der Kohlenstoffdioxid-Assimilation in Pflanzen. (de) リブロース-5-リン酸-3-エピメラーゼ(Ribulose-phosphate 3-epimerase、EC 5.1.3.1)は、還元的ペントースリン酸回路において、D-リブロース-5-リン酸をD-キシルロース-5-リン酸に変換する酵素である。 D-リブロース-5-リン酸 D-キシルロース-5-リン酸従って、この酵素の基質はD-リブロース-5-リン酸の1つ、生成物はD-キシルロース-5-リン酸の1つである。この酵素は異性化酵素、特に炭水化物及びその類縁体に作用するラセマーゼ、エピメラーゼに分類される。金属耐性細菌Cupriavidus metalliduransは、この酵素をコードする2つの遺伝子を持っていることが知られている。1つは染色体のP40117、もう1つはプラスミドのQ04539である。この酵素は、幅広い種類の細菌、古細菌、菌類、植物で見られる。全てのタンパク質は、209から241アミノ酸残基であり、TIMバレル構造を持つ。この酵素の系統名は、D-リブロース-5-リン酸 3-エピメラーゼ(D-ribulose-5-phosphate 3-epimerase)である。PPEとも呼ばれる。この酵素は、ペントースリン酸経路、ペントースとグルクロン酸の相互変換、炭酸固定の3つの代謝経路に関与している。 (ja) La phosphopentose épimérase est une épimérase qui catalyse la réaction : D-ribulose-5-phosphate D-xylulose-5-phosphate. Cette enzyme intervient notamment dans la fixation du carbone par les plantes à travers le cycle de Calvin, ainsi que dans la voie des pentoses phosphates, et dans d'autres interconversions de pentoses et de glucuronates. On la trouve chez un grand nombre de bactéries, d'archées, de mycètes, de plantes et d'animaux. Elle présente un structure en tonneau TIM et compte entre 209 et 241 résidus d'acides aminés selon les espèces. Chez l'homme, elle est codée par le gène RPE, situé sur le chromosome 2. (fr) Phosphopentose epimerase (also known as ribulose-phosphate 3-epimerase and ribulose 5-phosphate 3-epimerase, EC 5.1.3.1) encoded by the RPE gene is a metalloprotein that catalyzes the interconversion between D-ribulose 5-phosphate and D-xylulose 5-phosphate. D-ribulose 5-phosphate D-xylulose 5-phosphate This reversible conversion is required for carbon fixation in plants – through the Calvin cycle – and for the nonoxidative phase of the pentose phosphate pathway. This enzyme has also been implicated in additional pentose and glucuronate interconversions. (en)
foaf:name	ribulose-phosphate 3-epimerase (en)
name	Ribulose-phosphate 3 epimerase family (en) ribulose-phosphate 3-epimerase (en)
foaf:depiction
dcterms:subject	Enzymes of known structure EC 5.1.3
Wikipage page ID	10529910 (xsd:integer)
Wikipage revision ID	1096302652 (xsd:integer)
Link from a Wikipage to another Wikipage	Carbohydrates Carbon fixation Epimer List of enzymes Metalloprotein Beta sheet Ribulose 1,5-bisphosphate Ribulose 5-phosphate Cupriavidus metallidurans Cytoplasm Carbonyl Thylakoid Enzymes of known structure Pentose Electron microscopy Glutathione Apoenzyme Ligand Malaria Calvin cycle Pentose phosphate pathway Phosphoribulokinase Plasmodium falciparum Protein Data Bank Substrate (biology) Transketolase Mutagenesis CO2 Active site Cation Divergent evolution Helix Acids Erythrose 4-phosphate Isomerase Dimer (chemistry) RPE (gene) Ribose-5-phosphate isomerase H2O2 Iron Atoms EC 5.1.3 Chloroplasts TIM barrel Cofactor (biochemistry) Tertiary structure Triosephosphate isomerase Metabolism Organism Catalysis Xylulose 5-phosphate Helices Hydroxyl Reactive oxygen species Divalent Structural Classification of Proteins database Epimerase Protozoan Racemase

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