Human Kininogen (KN) Matched Antibody Pair (ABPR-L016)

Regulatory status: For research use only, not for use in diagnostic procedures.

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Size
Sufficient reagent for 4 x 96 well plates
Sample
Plasma
Species Reactivity
Human
Intended Use
This antibody pair set comes with matched antibody pair to detect and quantify protein level of Human KNG1 (KN)
Contents of Kit
1. Capture Antibody (yellow): 0.4 ml of polyclonal affinity purified anti-KN antibody for coating plates.
2. Detecting Antibody (red): 0.4 ml of peroxidase-conjugated polyclonal anti-KN antibody for detection of captured KN.
Note: Reagents are sufficient for at least 4×96 well plates using recommended protocols. Antibodies are supplied in a 50% (v/v) glycerol solution for storage at –10 to -20°C. Keep vials tightly capped. Do not store in frost-free freezers.
Storage
-10 to -20°C
General Description
Kininogens are multi-function proteins that are involved in the processes of coagulation, anticoagulation, fibrinolysis, inflammation and cell adhesion. Kininogens are produced in the liver but have also been found in platelets, granulocytes, renal tubular cells and skin. Two forms of kininogen are identified in plasma, both of which are the result of differential splicing of a single gene. High molecular weight kininogen (HK), previously known as Fitzgerald Factor, is a single chain glycoprotein of 120 kDa with a plasma concentration of 80 μg/mL (660 nM). Low molecular weight kininogen (LK), also known as α-cysteine protease inhibitor, is a single chain glycoprotein of 68 kDa with a plasma concentration of 160 μg/mL (2.35 μM). HK and LK share a common heavy chain and bradykinin domain, but have unique light chains. It is the light chain of HK that is responsible for the coagulant cofactor activity by binding to anionic surfaces and for the ability to bind the zymogens prekallikrein (PK) and factor XI (F.XI). HK is cleaved by kallikrein in several sequential steps that result in the release of a potent vasodilator bradykinin and the conversion to a two-chain form of HK with increased cofactor activity. In plasma, most of the PK and F.XI circulate in complex with HK. Activation of PK by F.XIIa generates kallikrein, which initiates reciprocal activation of PK and F.XI. The presence of HK also serves to protect kallikrein and activated F.XI from protease inhibitors such as C1-Inhibitor, but regulation of the system may be accomplished through proteolytic inactivation of the HK cofactor activity by these enzymes.

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