F1757
Fumarase from porcine heart
ammonium sulfate suspension, ≥300 units/mg protein (biuret)
Synonym(s):
L-Malate hydrolyase, Fumarate hydratase
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form
ammonium sulfate suspension
specific activity
≥300 units/mg protein (biuret)
foreign activity
malic dehydrogenase ≤0.1%
storage temp.
2-8°C
General description
Fumarase (FH in human) is a well-known tricarboxylic-acid-cycle enzyme found in both the cytoplasm and mitochondria of all eukaryotes.
Fumarase is mapped to human chromosome 1q43. Fumarase comprises of three domains D1, D2 and D3 and belongs to class II fumarase family.
Application
Fumarase from porcine heart has been used:
- as a positive control in isocitrate dehydrogenase and α-ketoglutarate dehydrogenase assay
- for immobilized enzyme based stability assay
- in fumarate hydratase assays in human lung carcinoma cells (A549)
Fumarase is used as a protein calibration standard in the purification of intact DNA polymerase a/primase from mouse cells.
Biochem/physiol Actions
Fumarase catalyzes the reversible hydration of fumarate to malate. In its mitochondrial form, fumarate is involved in the Krebs Cycle, while the cytosolic form is involved in amino acid metabolism.
Fumarase is essential for regulation of cellular metabolism. Fumarase elicits protective function from double-strand breaks (DSBs) induced by infrared radiation. Loss of function mutations in the fumarase gene is implicated in hereditary leiomyomatosis and renal cell cancer (HLRCC)-syndrome.
Unit Definition
One unit will convert 1.0 μmole of L-malate to fumarate per min at pH 7.6 at 25 °C.
Physical form
Suspension in 3.2 M (NH4)2SO4, 0.05 M KH2PO4, pH 7.5, 0.014 M 2-mercaptoethanol
Preparation Note
Isolated by the method of Beeckmans, S., and Kanarek, L., Eur. J. Biochem., 78, 437 (1977). Affinity purified.
Signal Word
Warning
Hazard Statements
Precautionary Statements
Hazard Classifications
Skin Sens. 1
Storage Class Code
10 - Combustible liquids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
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Identification of the catalytic mechanism and estimation of kinetic parameters for fumarase
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Fumarase Deficiency: A Safe and Potentially Disease Modifying Effect of High Fat/Low Carbohydrate Diet
Ryder B, et al.
JIMD Reports, 40(3), 77?83-77?83 (2018)
Fumarase: a paradigm of dual targeting and dual localized functions
Yogev O, et al.
FEBS Journal, 278(22), 4230-4242 (2011)
E V Chernigovskaia et al.
Problemy endokrinologii, 34(1), 60-64 (1988-01-01)
The reaction of neurosecretory cells of some hypothalamic centers of rats of different age to experimental change of the blood level of corticoids to elucidate their role in the regulation of function of the hypophyseoadrenocortical system was studied. Immunohistochemical methods
Fumarase: a mitochondrial metabolic enzyme and a cytosolic/nuclear component of the DNA damage response
Yogev O, et al.
PLoS Biology, 8(3), e1000328-e1000328 (2010)
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