磷酸甘油酸脫氫酶
位於1號人類染色體的基因
磷酸甘油酸脫氫酶（英語：phosphoglycerate dehydrogenase，EC 1.1.1.95 （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。這種酶能催化以下兩種酶促反應：
| 磷酸甘油酸脫氫酶 | |||||||||
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| 識別碼 | |||||||||
| EC編號 | 1.1.1.95 | ||||||||
| CAS號 | 9075-29-0 | ||||||||
| 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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- 3-磷酸化-D-甘油酸 + NAD+ 3-磷酸羥基丙酮酸 + NADH + H+
- 2-羥基戊二酸 + NAD+ α-酮戊二酸 + NADH + H+
在大腸桿菌（Escherichia coli）中，磷酸甘油酸脫氫酶參與催化絲氨酸生物合成的磷酸絲氨酸途徑中的第一步，[1]上述可逆反應主要逆向進行。磷酸甘油酸脫氫酶可被絲氨酸或甘氨酸抑制。這種酶很不尋常，因為它還能像D-2-羥基戊二酸脫氫酶和L-2-羥基戊二酸脫氫酶一樣還原α-酮戊二酸，其中，D型底物更適合磷酸甘油酸脫氫酶。[2]
參考文獻
- ^ Pizer, L.I. The mechanism of end product inhibition of serine biosynthesis. I. Purification and kinetics of phosphoglycerate dehydrogenase. J. Biol. Chem. 1986, 243: 2081–2089. PMID 4384871.
- ^ Zhao, G. and Winkler, M.E. A novel α-ketoglutarate reductase activity of the serA-encoded 3-phosphoglycerate dehydrogenase of Escherichia coli K-12 and its possible implications for human 2-hydroxyglutaric aciduria. J. Bacteriol. 1996, 178: 232–239. PMID 8550422.
- Sugimoto, E. and Pizer, L.I. The mechanism of end product inhibition of serine biosynthesis. I. Purification and kinetics of phosphoglycerate dehydrogenase. J. Biol. Chem. 1968, 243: 2081–1089. PMID 4384871.
- Schuller, D.J., Grant, G.A. and Banaszak, L.J. The allosteric ligand site in the Vmax-type cooperative enzyme phosphoglycerate dehydrogenase. Nat. Struct. Biol. 1995, 2: 69–76. PMID 7719856.
擴展閱讀
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. PMID 15489334. doi:10.1101/gr.2596504. - Ota T, Suzuki Y, Nishikawa T; et al. Complete sequencing and characterization of 21,243 full-length human cDNAs.. Nat. Genet. 2004, 36 (1): 40–45. PMID 14702039. doi:10.1038/ng1285.
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