异柠檬酸脱氢酶 (NAD+)
外觀
異檸檬酸脫氫酶 (NAD+) | |||||||||
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結合了檸檬酸(洋紅色小分子)和NAD+(白色)的異檸檬酸脫氫酶 (NAD+)[1](PDB 3blv) | |||||||||
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識別碼 | |||||||||
EC編號 | 1.1.1.41 | ||||||||
CAS號 | 9001-58-5 | ||||||||
資料庫 | |||||||||
IntEnz | IntEnz瀏覽 | ||||||||
BRENDA | BRENDA入口 | ||||||||
ExPASy | NiceZyme瀏覽 | ||||||||
KEGG | KEGG入口 | ||||||||
MetaCyc | 代謝路徑 | ||||||||
PRIAM | 概述 | ||||||||
PDB | RCSB PDB PDBj PDBe PDBsum | ||||||||
基因本體 | AmiGO / EGO | ||||||||
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異檸檬酸脫氫酶 (NAD+)(英語:isocitrate dehydrogenase (NAD+),EC 1.1.1.41 (頁面存檔備份,存於網際網路檔案館))是一種以NAD+或NADP+為受體、作用於供體CH-OH基團上的氧化還原酶。這種酶能催化以下酶促反應:
異檸檬酸脫氫酶 (NAD+)需要二價錳離子(Mn2+)或二價鎂離子(Mg2+)以維持活性。真核細胞中的異檸檬酸脫氫酶 (NAD+)以兩種形式存在:其中一種與NAD+相關聯且僅在粒線體中被發現並可以變構調節;另一種與NADP+還存在於細胞質基質中但不能變構調節。[2] 這兩種酶——異檸檬酸脫氫酶 (NAD+)與異檸檬酸脫氫酶 (NADP+)並不相同,後者不能以草醯琥珀酸作為底物。某些物種的異檸檬酸脫氫酶 (NAD+)也能利用NADP+,但催化的反應速率較慢。[3]
參考文獻
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