Cathepsin G from human leukocytes is a neutral proteinase secreted by neutrophil granulocytes. It belongs to the family of serine proteases. Cathepsin G is a glycoprotein, which contains 1% carbohydrate. The gene is located on human chromosome 14q12.
Application
Cathepsin G from human leukocytes has been used to determine protease sensitivity. It has also been used for the stimulation and staining of dendritic cells and macrophage.
Biochem/physiol Actions
Cathepsin G has pro-apoptotic activity and can activate caspases in vitro.
Cathepsin G from human leukocytes degrades various proteins, such as elastin, collagen, fibrinogen and immunoglobin. It may be implicated in muscle catabolism. Cathepsin G is involved in the activation or inactivation of protein hormones and the inactivation of plasma proteinase inhibitors. It alters the cytoskeleton, enhances the permeability of vascular endothelial cells and the chemotaxis of inflammatory cells. Cathepsin G is associated with autoimmunity and cancer. It exhibits chymotrypsin and trypsin like activity. Cathepsin G modulates neutrophil effector functions.
Physical form
Lyophilized from 0.5 M pyridinium acetate, pH 5.3.
Other Notes
One unit will release one nanomole of p-nitroaniline per second from N-succinyl-Ala-Ala-Pro-Phe p-nitroanilide at pH 7.5 at 37 °C.
≥200 units/mg protein (One unit is defined as the amount of enzyme that hydrolyzes 1 μmol of Z-Arg-Arg-beta-naphthylamide per minute at 40 °C, using 100 mM Na/K phosphate, pH 6.0, with 1.33 mM EDTA and 2 mM DTT as the activation buffer.)
specific activity
-
Gene Information
human ... CTSG(1511)
Gene Information
human ... CTSL1(1514)
Gene Information
human ... CTSB(1508)
Gene Information
human ... CTSK(1513)
form
lyophilized powder
form
solution
form
buffered aqueous solution
form
liquid
shipped in
dry ice
shipped in
dry ice
shipped in
dry ice
shipped in
dry ice
storage temp.
−20°C
storage temp.
−20°C
storage temp.
−70°C
storage temp.
−70°C
Clase de almacenamiento
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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