Human plasma kallikrein(KLKB1) ELISA kit

Code CSB-E14339h
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Product Type ELISA Kit
Size 96T,5×96T,10×96T
Uniprot No. P03952
Lead Time 3-5 working days
Abbreviation KLKB1
Protein Biological Process 1 Blood Coagulation
Target Name kallikrein B, plasma (Fletcher factor) 1
Alias KLK3, PPK, Fletcher factor|kininogenin|plasma kallikrein B1|plasma kallikrein heavy chain|plasma kallikrein light chain
Species Homo sapiens (Human)
Protein Biological Process 3 Blood coagulation
Sample Types serum, plasma
Detection Range 9.38 mU/mL-600 mU/mL
Sensitivity 2.34 mU/mL
Assay Time 1-5h
Sample Volume 50-100ul
Detection Wavelength 450 nm
Research Area Cell Biology
Protocol may be improved. Please feel free to contact CUSABIO product specialist to obtain the latest version.
Assay Principle quantitative
Measurement Sandwich
Target Details Plasma prekallikrein is a glycoprotein that participates in the surface-dependent activation of blood coagulation, fibrinolysis, kinin generation and inflammation. It is synthesized in the liver and secreted into the blood as a single polypeptide chain. Plasma prekallikrein is converted to plasma kallikrein by factor XIIa by the cleavage of an internal Arg-Ile bond. Plasma kallikrein therefore is composed of a heavy chain and a light chain held together by a disulphide bond. The heavy chain originates from the amino-terminal end of the zymogen and contains 4 tandem repeats of 90 or 91 amino acids. Each repeat harbors a novel structure called the apple domain. The heavy chain is required for the surface-dependent pro-coagulant activity of plasma kallikrein. The light chain contains the active site or catalytic domain of the enzyme and is homologous to the trypsin family of serine proteases. Plasma prekallikrein deficiency causes a prolonged activated partial thromboplastin time in patients.
HGNC 6364
RGD 2971
MGI 892021
Intra-assay Precision (Precision within an assay): CV%<8%
Three samples of known concentration were tested twenty times on one plate to assess.
Inter-assay Precision (Precision between assays): CV%<10%
Three samples of known concentration were tested in twenty assays to assess.
To assess the linearity of the assay, samples were spiked with high concentrations of human KLKB1 in various matrices and diluted with the Sample Diluent to produce samples with values within the dynamic range of the assay.
1:100Average %96
Range %89-100
1:200Average %90
Range %85-98
1:400Average %87
Range %83-93
1:800Average %92
Range %88-96
The recovery of human KLKB1 spiked to levels throughout the range of the assay in various matrices was evaluated. Samples were diluted prior to assay as directed in the Sample Preparation section.
Sample TypeAverage % RecoveryRange
Serum (n=5) 9480-103
EDTA plasma (n=4)9686-106
Typical Data
These standard curves are provided for demonstration only. A standard curve should be generated for each set of samples assayed.
6002.101 2.207 2.154 2.048
3001.695 1.687 1.691 1.585
1501.261 1.278 1.270 1.164
750.842 0.867 0.855 0.749
37.50.503 0.514 0.509 0.403
18.750.345 0.368 0.357 0.251
9.380.201 0.211 0.206 0.100
00.105 0.107 0.106  
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Function The enzyme cleaves Lys-Arg and Arg-Ser bonds. It activates, in a reciprocal reaction, factor XII after its binding to a negatively charged surface. It also releases bradykinin from HMW kininogen and may also play a role in the renin-angiotensin system by converting prorenin into renin.
Involvement in disease Prekallikrein deficiency (PKK deficiency)
Subcellular Location Secreted
Protein Families Peptidase S1 family, Plasma kallikrein subfamily
Database Links

HGNC: 6371

OMIM: 229000

KEGG: hsa:3818

STRING: 9606.ENSP00000264690

UniGene: Hs.237642

Pathway Complement and coagulation cascades

Q&A and Customer Reviews


Does the ELISA detect both the zymogen and the cleaved Klkb1 or only the zymogen?

Thanks for your inquiry.
This kit is designed against full length.
Pls refer to: let me know if you have any further questions. Thank you.
Customer Reviews

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