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Merck
CN

SRP6319

Kininogen,LMW from human plasma

≥95% (SDS-PAGE)

Synonym(s):

Alpha-2-thiol proteinase inhibitor, BDK, Fitzgerald factor, High molecular weight Kininogen, KNG, Kininogen-1 heavy chain, Low molecular weight growth-promoting, Williams-Fitzgerald-Flaujeac factor

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About This Item

UNSPSC Code:
12352200
Form:
lyophilized
Assay:
≥95% (SDS-PAGE)
Biological source:
human plasma
Mol wt:
65 kDa

Key Documents

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biological source

human plasma

assay

≥95% (SDS-PAGE)

form

lyophilized

mol wt

65 kDa

packaging

pkg of 100 μg

UniProt accession no.

P01042

shipped in

wet ice

storage temp.

−20°C

Gene Information

human ... KNG1(3827)

General description

KNG1 (kininogen 1) gene is localized to human chromosome 3, and codes for both high and low molecular weight kininogen. The high molecular weight kininogen (HK) is a 120kDa single chain glycoprotein.
LMW Kininogen is involved in blood pressure regulation since it is an endogenous protein substrate for tissue kallikrein. Proteolytic cleavage by kallikrein releases vasoactive bradykinin from LMW kininogen. In addition, LMW kininogen, like HMW kininogen, is a major extracellular cysteine protease inhibitor.

Biochem/physiol Actions

KNG1 (kininogen 1) exists in low and high molecular weight forms which are precursors for bradykinin and kallidin (Lys-Bradykinin), respectively. The high molecular weight kininogen (HK) functions as a cofactor for the stimulation of surface-bound Hageman factor (Factor XII) by kallikrein. HK is subsequently required for the activation of prekallikrein and Factor XI by the activated Hageman factor. These steps are essential for the initiation of coagulation, fibrinolysis, and the production of vasoactive peptides. Ile581Thr polymorphism in KNG1 gene is linked with increased susceptibility to venous thrombosis.

Physical form

Lyophilized from 10 mM Na acetate, pH 5.5 with 200 mM NaCI .

Preparation Note

In water or aqueous buffer

pictograms

Health hazardExclamation mark
GHS08,GHS07

signalword

Danger

Hazard Classifications

Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Information

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The shape of high molecular weight kininogen. Organization into structural domains, changes with activation, and interactions with prekallikrein, as determined by electron microscopy.
Weisel JW, et al.
The Journal of Biological Chemistry, 269(13), 10100-10106 (1994)
Common variants of large effect in F12, KNG1, and HRG are associated with activated partial thromboplastin time.
Houlihan LM, et al.
American Journal of Human Genetics, 86(4), 626-631 (2010)
Genome-wide meta-analyses of plasma renin activity and concentration reveal association with the kininogen 1 and prekallikrein genes.
Lieb W, et al.
Circulation. Cardiovascular Genetics, 8(1), 131-140 (2015)
KNG1 Ile581Thr and susceptibility to venous thrombosis.
Morange PE, et al.
Blood, 117(13), 3692-3694 (2011)

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