乳酸脫氫酶
外觀
乳酸脫氫酶 | |||||||
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識別碼 | |||||||
EC編號 | 1.1.1.27 | ||||||
CAS號 | 9001-60-9 | ||||||
數據庫 | |||||||
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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乳酸脫氫酶A (M亞基) | |
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人類乳酸脫氫酶M4(在骨骼肌中發現的同工酶)。來自PDB 1I10。 | |
識別 | |
符號 | LDHA |
替換符號 | LDHM |
Entrez | 3939 |
HUGO | 6535 |
OMIM | 150000 |
RefSeq | NM_005566 |
UniProt | P00338 |
其他數據 | |
EC編號 | 1.1.1.27 |
基因座 | 11 p15.4 |
乳酸脫氫酶(英語:Lactate dehydrogenase;EC 1.1.1.27),縮寫:LDH或LD,是一個廣泛存在於各種生物體中的酶,包括了植物與動物。
乳酸脫氫酶存在於四種不同的酶分類中。其中兩種是依賴細胞色素c的酶,它們各自作用於D-乳酸(EC 1.1.2.4)與L-乳酸(EC 1.1.2.3)。
反應
[編輯]乳酸脫氫酶催化丙酮酸與乳酸之間的互變並伴隨着還原型煙酰胺腺嘌呤二核苷酸與其氧化型之間互變。
此酶也可催化2-羥基丁酸的脫氫作用,但其為較乳酸劣勢的基質。
L-乳酸脫氫酶
[編輯]- EC編號:1.1.1.27
- 通用名:L-乳酸脫氫酶
- 英文:L-lactate dehydrogenase
- 催化反應:(S)-乳酸+NAD+⇔丙酮酸+NADH+H+
- 系統名稱:(S)-乳酸:NAD+氧化還原酶
- 英文:(S)-lactate:NAD+ oxidoreductase
- CAS註冊號:9001-60-9
- 註釋:也氧化其他(S)-2-單羧酸。NADP+也可以緩慢的與動物的D-乳酸脫氫酶反應,但不與細菌的此酶反應。
D-乳酸脫氫酶
[編輯]- EC編號:1.1.1.28
- 通用名:D-乳酸脫氫酶
- 英文:D-lactate dehydrogenase
- 催化反應:(D)-乳酸+NAD+⇔丙酮酸+NADH+H+
- 系統名稱:(R)-乳酸:NAD+氧化還原酶
- 英文:(R)-lactate:NAD+ oxidoreductase
- CAS登記號:9028-36-8
- 參考:Dennis, D. and Kaplan, N.O. D and L-lactic acid dehydrogenase in Lactobacillus plantarum. J. Biol. Chem. 235 (1960) 810-818
延伸閱讀
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