Anti-Angiotensin Converting Enzyme Antibody, clone 3G8

FUNCTION: SwissProt: P22966 # Converts angiotensin I to angiotensin II by release of the terminal His-Leu, this results in an increase of the vasoconstrictor activity of angiotensin. Also able to inactivate bradykinin, a potent vasodilator. Has also a glycosidase activity which releases GPI-anchored proteins from the membrane by cleaving the mannose linkage in the GPI moiety.| P12821 # Converts angiotensin I to angiotensin II by release of the terminal His-Leu, this results in an increase of the vasoconstrictor activity of angiotensin. Also able to inactivate bradykinin, a potent vasodilator.
COFACTOR: Binds 1 zinc ion per subunit. & Binds 2 chloride ions per subunit.
SIZE: 732 amino acids; 83330 Da
SUBCELLULAR LOCATION: Angiotensin-converting enzyme, testis- specific isoform, soluble form: Secreted. & Cell membrane; Single-pass type I membrane protein.
TISSUE SPECIFICITY: Spermatocytes, adult testis.
DOMAIN: SwissProt: P22966
PTM: Phosphorylated by CK2 on Ser-725; which allows membrane retention (By similarity).
DISEASE: SwissProt: P12821 # Genetic variations in ACE may be a cause of susceptibility to ischemic stroke [MIM:601367]; also known as cerebrovascular accident or cerebral infarction. A stroke is an acute neurologic event leading to death of neural tissue of the brain and resulting in loss of motor, sensory and/or cognitive function. Ischemic strokes, resulting from vascular occlusion, is considered to be a highly complex disease consisting of a group of heterogeneous disorders with multiple genetic and environmental risk factors. & Defects in ACE are a cause of renal tubular dysgenesis (RTD) [MIM:267430]. RTD is an autosomal recessive severe disorder of renal tubular development characterized by persistent fetal anuria and perinatal death, probably due to pulmonary hypoplasia from early-onset oligohydramnios (the Potter phenotype). & Genetic variations in ACE can influence susceptibility to diabetic nephropathy [MIM:603933]. Diabetic nephropathy is a kidney disease and resultant kidney function impairment due to the long standing effects of diabetes on the microvasculature (glomerulus) of the kidney. Features include increased urine protein and declining kidney function.
SIMILARITY: SwissProt: P22966 ## Belongs to the peptidase M2 family.| P12821 ## Belongs to the peptidase M2 family.
MISCELLANEOUS: The glycosidase activity probably uses different active site residues than the metalloprotease activity. & Inhibitors of ACE are commonly used to treat hypertension and cardiac dysfunction.

Angiotensin-converting enzyme from human lung

Immunohistochemistry (Danilov et al., 1987; Falkenhahn et al., 1995; Morrell et al., 1995) : 1:200 on fresh frozen or 4% paraformaldehyde fixed tissues. Does not work on paraffin embedded tissue.

Immunocytochemistry: 1:100. Reacts with endothelial cells, macrophages (activated) and THP1 cells (monocyte line).

Immunoprecipitation: 1:1,000

ELISA : 1:1,000

Structure-function of ACE (Danilov et al., 1994)

Optimal working dilutions must be determined by the end user.

Angiotensin-converting enzyme [ACE] (N-terminal)

Purified immunoglobulin. Liquid in 100 mM borate buffer, pH 8.0 and 150 mM NaCl.

Maintain at -20°C in undiluted aliquots for up to 6 months. Avoid repeated freeze/thaw cycles.

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