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http://dbpedia.org/ontology/abstract Isocitrat-Dehydrogenase (IDH) ist der NameIsocitrat-Dehydrogenase (IDH) ist der Name für Enzyme und Enzymkomplexe, die die oxidative Abspaltung von Kohlenstoffdioxid von Isocitrat katalysieren, wobei α-Ketoglutarat entsteht. Diese Reaktion ist Teil des Citratzyklus und daher zentral im Stoffwechsel aller Lebewesen. Die Umkehrreaktion, die nur in manchen Mikroorganismen vorkommt, benutzt das Enzym . Die katalysierte Reaktion: + NAD(P)+ + CO2 + NAD(P)H + H+ Von Isocitrat wird CO2 abgespalten und Ketoglutarat bildet sich. Strukturell bestehen IDH aus abwechselnden α-Layern und β-Sheets in einer Sandwich-Anordnung. Es gibt zwei verschiedene Enzymgruppen, je nachdem ob NAD+ (EC 1.1.1.41) oder NADP+ (EC 1.1.1.42) Kofaktor ist. Beide haben Mg2+ oder Mn2+ als Metallion. Homologe der ersten Gruppe bestehen aus drei Untereinheiten (Heterotetramer ααβγ) und sind im Mitochondrium lokalisiert, während die zweite Gruppe Homodimere sind, mit je einer Isoform im Mitochondrium und im Cytosol. IDH kommen in allen Lebewesen vor. Beim Menschen sind die drei IDH-Isoformen in fünf Genen codiert, deren Defekte zu erblichen Stoffwechselstörungen führen können:ichen Stoffwechselstörungen führen können: , イソクエン酸デヒドロゲナーゼ(isocitrate dehydrogenase, Iイソクエン酸デヒドロゲナーゼ(isocitrate dehydrogenase, IDH)は、イソクエン酸と2-オキソグルタル酸とを相互変換する酸化還元酵素である。イソクエン酸デヒドロゲナーゼにはイソクエン酸デヒドロゲナーゼ (NAD+)(EC 1.1.1.41)と、イソクエン酸デヒドロゲナーゼ (NADP+)(EC 1.1.1.42)の2種が存在するがクエン酸回路を構成するのは前者の方である。 クエン酸回路を構成するイソクエン酸デヒドロゲナーゼ (NAD+)は二段階でイソクエン酸から2-オキソグルタル酸に変換している。まず、イソクエン酸(二級アルコール)のオキサロコハク酸(ケトン)への酸化をしたのち、続いてこのオキサロコハク酸のβ-カルボキシル基を脱炭酸することによりα-ケトグルタル酸へ変換される。 もう一方のイソクエン酸デヒドロゲナーゼ (NADP+)も同じ反応をするが、こちらの反応はクエン酸回路とは関係がなく、ミトコンドリア、ペルオキシソームと同様に細胞質基質で行われ、補因子もNAD+ではなくNADP+が使われる。キシソームと同様に細胞質基質で行われ、補因子もNAD+ではなくNADP+が使われる。 , Isocitratdehydrogenas är ett enzym. Det fiIsocitratdehydrogenas är ett enzym. Det finns flera isoenzymer av isocitratdehydrogenas, varav ett som katalyserar tredje steget i TCA-cykeln, även känd som citronsyracykeln. Enzymet producerar alfa-ketoglutarat genom oxidativ dekarboxylering av isocitrat, vilket även ger CO2 och omvandlar NAD+ till NADH. NADH kan gå in till elektrontransportkedjan och där generera ATP.ktrontransportkedjan och där generera ATP. , L'isocitrato deidrogenasi (NAD+), detta anche IDH, è un enzima, appartenente alla classe delle ossidoreduttasi, che prende parte al ciclo di Krebs. , Isocitrate dehydrogenase (IDH) (EC 1.1.1.4Isocitrate dehydrogenase (IDH) (EC 1.1.1.42) and (EC 1.1.1.41) is an enzyme that catalyzes the oxidative decarboxylation of isocitrate, producing alpha-ketoglutarate (α-ketoglutarate) and CO2. This is a two-step process, which involves oxidation of isocitrate (a secondary alcohol) to oxalosuccinate (a ketone), followed by the decarboxylation of the carboxyl group beta to the ketone, forming alpha-ketoglutarate. In humans, IDH exists in three isoforms: IDH3 catalyzes the third step of the citric acid cycle while converting NAD+ to NADH in the mitochondria. The isoforms IDH1 and IDH2 catalyze the same reaction outside the context of the citric acid cycle and use NADP+ as a cofactor instead of NAD+. They localize to the cytosol as well as the mitochondrion and peroxisome. well as the mitochondrion and peroxisome. , La isocitrat deshidrogenasa (IDH) és un enLa isocitrat deshidrogenasa (IDH) és un enzim implicat en el metabolisme dels glúcids, ja que participa en el cicle de Krebs, catalitzant la descarboxilació oxidativa de l'àcid isocítric (també anomenat isocitrat) transformant-lo en . La IDH és dependent de NAD+ o NADP+. En les existeixen un mínim de tres isoenzims de la IDH: * IDH1 - Isocitrat deshidrogenasa depenent de NADP+ citoplasmàtica * IDH2 - Isocitrat deshidrogenasa depenent de NADP+ mitocondrial * IDH3 - Isocitrat deshidrogenasa depenent de NAD+, en els humans formada per les subunitats alfa, beta i gamma. En Escherichia coli l'activitat de l'enzim depenent del NADP+ està controlada per la fosforilació d'un residu de serina que duu a terme la . La forma fosforilada de la IDH està completament desactivada.a de la IDH està completament desactivada. , Isocitrato desidrogenase, é uma enzima queIsocitrato desidrogenase, é uma enzima que está incluída no ciclo do ácido cítrico, especificamente na terceira etapa do ciclo - a do ácido isocítrico - tendo como produto alfa-cetoglutarato e dióxido de carbono, convertendo NAD para sua forma reduzida: NADH. Esse é um processo em duas fases aonde ocorre primeiro a oxidação do isocitrato para seguida da descarboxilação do grupo carboxila da cetona, formanto o alfa-cetoglutarato. da cetona, formanto o alfa-cetoglutarato. , Isocitrátdehydrogenáza (IDH nebo ICD) je enzym ze skupiny oxidoreduktáz, který katalyzuje jeden krok Krebsova cyklu, a to oxidaci isocitrátu na 2-oxoglutarát. Pro správný průběh jsou zásadní ionty hořčíku nebo manganu. , (아)이소시트레이트 탈수소효소(IDH,Isocitrate dehydrogen(아)이소시트레이트 탈수소효소(IDH,Isocitrate dehydrogenase,EC 1.1.1.42 및 EC 1.1.1.41)는 (아)이소시트레이트(이소시트르산)의 산화적 탈카복실화를 촉매하여 알파-케토글루타레이트(α-Ketoglutarate ) 및 CO2를 생성하는 효소이다. 이것은 2단계 공정으로, 이소시트레이트(2차 알코올)를 옥살로숙시네이트(Oxalosuccinate,케톤)로 산화시킨 다음, 카복실기 베타를 케톤으로 탈카복실화하여 알파-케토글루타레이트를 형성한다. 인간에게서 IDH는 3가지 이소형(이성질체)으로 존재한다. IDH3는 미토콘드리아에서 NAD+를 NADH로 전환시키면서 시트르산 주기의 세 번째 단계를 촉매한다. 이소형 IDH1 및 IDH2는 시트르산 사이클(TCA회로)의 맥락 밖에서 동일한 반응을 촉매하고 NADP+를 NAD+ 대신 보조인자로 사용한다. 이들은 미토콘드리아와 퍼옥시좀뿐만 아니라 시토졸(cytosol)에 국한된다.이들은 미토콘드리아와 퍼옥시좀뿐만 아니라 시토졸(cytosol)에 국한된다. , La enzima Isocitrato deshidrogenasa (IDH) La enzima Isocitrato deshidrogenasa (IDH) es una enzima importante del metabolismo de los carbohidratos participante en el ciclo de Krebs que cataliza la descarboxilación oxidativa del isocitrato para formar 2-oxoglutarato (alfa-cetoglutarato). La IDH es dependiente del NAD+ o NADP+. En los eucariotas existen al menos tres isozimas de la IDH. * IDH1 - Isocitrato deshidrogenasa dependiente del NADP+ citoplasmática, EC 1.1.1.42. * IDH2 - Isocitrato deshidrogenasa dependiente del NADP+ mitocondrial, EC 1.1.1.42. * IDH3 - Isocitrato deshidrogenasa dependiente del NAD+, EC 1.1.1.41, en los humanos formada por las subunidades alfa, beta y gamma. En la Escherichia coli la actividad de la enzima dependiente del NADP+ está controlada por la fosforilación de un residuo serina llevada a cabo por la isocitrato deshidrogenasa kinasa. La forma fosforilada de IDH está completamente desactivada.ada de IDH está completamente desactivada. , L´isocitrate déshydrogénase (IDH) est une L´isocitrate déshydrogénase (IDH) est une oxydoréductase qui catalyse la réaction : isocitrate + NADP+ / NAD+ α-cétoglutarate + CO2 + NADPH / NADH + H+. Cette réaction globale se déroule en deux étapes : * isocitrate + NADP+ / NAD+ oxalosuccinate + NADPH / NADH + H+ ; * oxalosuccinate α-cétoglutarate + CO2. Chez l'homme, cette enzyme existe en trois isoformes appelées IDH1, IDH2 et IDH3. L'isoenzyme IDH3 est présente dans les mitochondries où elle intervient aux 4e et 5e étapes du cycle de Krebs pour catalyser la décarboxylation de l'isocitrate en α-cétoglutarate en réduisant le NAD+ en NADH ; les deux autres sont présentes dans le cytosol, les peroxysomes et les mitochondries, où elles catalysent la même réaction qu'IDH3, éventuellement indépendamment du cycle de Krebs, et réduisent le NADP+ en NADPH au lieu d'utiliser le NAD+ comme coenzyme Ces trois isoformes humaines de l'isocitrate déshydrogénase ont les caractéristiques suivantes : * IDH1 est fortement exprimée dans le foie et se présente comme un homodimère. Cette enzyme intervient dans le cycle de Krebs mais aussi dans la défense contre le stress oxydant dû aux dérivés réactifs de l'oxygène. Elle est NADP+-dépendante. * IDH2 est fortement exprimée dans le cœur, les muscles et les lymphocytes activés, et se présente comme un homodimère. Elle est également NADP+-dépendante. * IDH3 est une enzyme mitochondriale qui se présente comme un hétérotétramère α2βγ. Contrairement aux deux précédentes, elle est NAD+-dépendante.Isocitrate déshydrogénase (NADP+) Représentation d'une isocitrate déshydrogénase d'E. coli complexée avec de l'isocitrate de magnésium et du NADP+ (PDB 1AI3) Isocitrate déshydrogénase (NAD+) IDH monomérique Isocitrate déshydrogénase monomérique d' (en) (PDB 1ITW)hydrogénase monomérique d' (en) (PDB 1ITW)
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rdfs:comment L´isocitrate déshydrogénase (IDH) est une L´isocitrate déshydrogénase (IDH) est une oxydoréductase qui catalyse la réaction : isocitrate + NADP+ / NAD+ α-cétoglutarate + CO2 + NADPH / NADH + H+. Cette réaction globale se déroule en deux étapes : * isocitrate + NADP+ / NAD+ oxalosuccinate + NADPH / NADH + H+ ; * oxalosuccinate α-cétoglutarate + CO2. Ces trois isoformes humaines de l'isocitrate déshydrogénase ont les caractéristiques suivantes : Isocitrate déshydrogénase (NAD+) IDH monomérique Isocitrate déshydrogénase monomérique d' (en) (PDB 1ITW)hydrogénase monomérique d' (en) (PDB 1ITW) , L'isocitrato deidrogenasi (NAD+), detta anche IDH, è un enzima, appartenente alla classe delle ossidoreduttasi, che prende parte al ciclo di Krebs. , Isocitrato desidrogenase, é uma enzima queIsocitrato desidrogenase, é uma enzima que está incluída no ciclo do ácido cítrico, especificamente na terceira etapa do ciclo - a do ácido isocítrico - tendo como produto alfa-cetoglutarato e dióxido de carbono, convertendo NAD para sua forma reduzida: NADH. Esse é um processo em duas fases aonde ocorre primeiro a oxidação do isocitrato para seguida da descarboxilação do grupo carboxila da cetona, formanto o alfa-cetoglutarato. da cetona, formanto o alfa-cetoglutarato. , イソクエン酸デヒドロゲナーゼ(isocitrate dehydrogenase, Iイソクエン酸デヒドロゲナーゼ(isocitrate dehydrogenase, IDH)は、イソクエン酸と2-オキソグルタル酸とを相互変換する酸化還元酵素である。イソクエン酸デヒドロゲナーゼにはイソクエン酸デヒドロゲナーゼ (NAD+)(EC 1.1.1.41)と、イソクエン酸デヒドロゲナーゼ (NADP+)(EC 1.1.1.42)の2種が存在するがクエン酸回路を構成するのは前者の方である。 クエン酸回路を構成するイソクエン酸デヒドロゲナーゼ (NAD+)は二段階でイソクエン酸から2-オキソグルタル酸に変換している。まず、イソクエン酸(二級アルコール)のオキサロコハク酸(ケトン)への酸化をしたのち、続いてこのオキサロコハク酸のβ-カルボキシル基を脱炭酸することによりα-ケトグルタル酸へ変換される。 もう一方のイソクエン酸デヒドロゲナーゼ (NADP+)も同じ反応をするが、こちらの反応はクエン酸回路とは関係がなく、ミトコンドリア、ペルオキシソームと同様に細胞質基質で行われ、補因子もNAD+ではなくNADP+が使われる。キシソームと同様に細胞質基質で行われ、補因子もNAD+ではなくNADP+が使われる。 , Isocitrate dehydrogenase (IDH) (EC 1.1.1.4Isocitrate dehydrogenase (IDH) (EC 1.1.1.42) and (EC 1.1.1.41) is an enzyme that catalyzes the oxidative decarboxylation of isocitrate, producing alpha-ketoglutarate (α-ketoglutarate) and CO2. This is a two-step process, which involves oxidation of isocitrate (a secondary alcohol) to oxalosuccinate (a ketone), followed by the decarboxylation of the carboxyl group beta to the ketone, forming alpha-ketoglutarate. In humans, IDH exists in three isoforms: IDH3 catalyzes the third step of the citric acid cycle while converting NAD+ to NADH in the mitochondria. The isoforms IDH1 and IDH2 catalyze the same reaction outside the context of the citric acid cycle and use NADP+ as a cofactor instead of NAD+. They localize to the cytosol as well as the mitochondrion and peroxisome. well as the mitochondrion and peroxisome. , La isocitrat deshidrogenasa (IDH) és un enLa isocitrat deshidrogenasa (IDH) és un enzim implicat en el metabolisme dels glúcids, ja que participa en el cicle de Krebs, catalitzant la descarboxilació oxidativa de l'àcid isocítric (també anomenat isocitrat) transformant-lo en . La IDH és dependent de NAD+ o NADP+. En les existeixen un mínim de tres isoenzims de la IDH: * IDH1 - Isocitrat deshidrogenasa depenent de NADP+ citoplasmàtica * IDH2 - Isocitrat deshidrogenasa depenent de NADP+ mitocondrial * IDH3 - Isocitrat deshidrogenasa depenent de NAD+, en els humans formada per les subunitats alfa, beta i gamma.ada per les subunitats alfa, beta i gamma. , Isocitrátdehydrogenáza (IDH nebo ICD) je enzym ze skupiny oxidoreduktáz, který katalyzuje jeden krok Krebsova cyklu, a to oxidaci isocitrátu na 2-oxoglutarát. Pro správný průběh jsou zásadní ionty hořčíku nebo manganu. , La enzima Isocitrato deshidrogenasa (IDH) La enzima Isocitrato deshidrogenasa (IDH) es una enzima importante del metabolismo de los carbohidratos participante en el ciclo de Krebs que cataliza la descarboxilación oxidativa del isocitrato para formar 2-oxoglutarato (alfa-cetoglutarato). La IDH es dependiente del NAD+ o NADP+. En los eucariotas existen al menos tres isozimas de la IDH. En la Escherichia coli la actividad de la enzima dependiente del NADP+ está controlada por la fosforilación de un residuo serina llevada a cabo por la isocitrato deshidrogenasa kinasa. La forma fosforilada de IDH está completamente desactivada.ada de IDH está completamente desactivada. , (아)이소시트레이트 탈수소효소(IDH,Isocitrate dehydrogen(아)이소시트레이트 탈수소효소(IDH,Isocitrate dehydrogenase,EC 1.1.1.42 및 EC 1.1.1.41)는 (아)이소시트레이트(이소시트르산)의 산화적 탈카복실화를 촉매하여 알파-케토글루타레이트(α-Ketoglutarate ) 및 CO2를 생성하는 효소이다. 이것은 2단계 공정으로, 이소시트레이트(2차 알코올)를 옥살로숙시네이트(Oxalosuccinate,케톤)로 산화시킨 다음, 카복실기 베타를 케톤으로 탈카복실화하여 알파-케토글루타레이트를 형성한다. 인간에게서 IDH는 3가지 이소형(이성질체)으로 존재한다. IDH3는 미토콘드리아에서 NAD+를 NADH로 전환시키면서 시트르산 주기의 세 번째 단계를 촉매한다. 이소형 IDH1 및 IDH2는 시트르산 사이클(TCA회로)의 맥락 밖에서 동일한 반응을 촉매하고 NADP+를 NAD+ 대신 보조인자로 사용한다. 이들은 미토콘드리아와 퍼옥시좀뿐만 아니라 시토졸(cytosol)에 국한된다.이들은 미토콘드리아와 퍼옥시좀뿐만 아니라 시토졸(cytosol)에 국한된다. , Isocitrat-Dehydrogenase (IDH) ist der NameIsocitrat-Dehydrogenase (IDH) ist der Name für Enzyme und Enzymkomplexe, die die oxidative Abspaltung von Kohlenstoffdioxid von Isocitrat katalysieren, wobei α-Ketoglutarat entsteht. Diese Reaktion ist Teil des Citratzyklus und daher zentral im Stoffwechsel aller Lebewesen. Die Umkehrreaktion, die nur in manchen Mikroorganismen vorkommt, benutzt das Enzym . Die katalysierte Reaktion: + NAD(P)+ + CO2 + NAD(P)H + H+ Von Isocitrat wird CO2 abgespalten und Ketoglutarat bildet sich. abgespalten und Ketoglutarat bildet sich. , Isocitratdehydrogenas är ett enzym. Det fiIsocitratdehydrogenas är ett enzym. Det finns flera isoenzymer av isocitratdehydrogenas, varav ett som katalyserar tredje steget i TCA-cykeln, även känd som citronsyracykeln. Enzymet producerar alfa-ketoglutarat genom oxidativ dekarboxylering av isocitrat, vilket även ger CO2 och omvandlar NAD+ till NADH. NADH kan gå in till elektrontransportkedjan och där generera ATP.ktrontransportkedjan och där generera ATP.
rdfs:label Isocitrat-Dehydrogenase , Isocitrato desidrogenase , Isocitrate déshydrogénase , Isocitrato deshidrogenasa , Isocitrate dehydrogenase , イソクエン酸デヒドロゲナーゼ , Isocitrat deshidrogenasa , Isocitratdehydrogenas , Isocitrato deidrogenasi , Isocitrátdehydrogenáza , 아이소시트르산 탈수소효소
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