KLKB1 Full-Length MS Protein Standard


Product Description:

Name KLKB1 Full-Length MS Protein Standard
Cat# CPFL311985
Protein Namekallikrein B, plasma (Fletcher factor) 1
SymbolKLKB1
SynonymsKLK3; PPK
AccessionNM_000892
Cytogenetic4q35
Amino Acid Labeled[U- 13C6, 15N4]-L-Arg and [U- 13C6, 15N2]-L-Lys
Chemical Purity> 80% as determined by SDS-PAGE and Coomassie blue staining
Expression HostHuman HEK293 cells
Predicted MW41.3 kDa
Expression TrueORF CloneRC211985
DescriptionKLKB1 Full-Length MS Protein Standard (NP_000883), Labeled with [U- 13C6, 15N4]-L-Arginine and [U- 13C6, 15N2]-L-Lysine, was produced in human 293 cells (HEK293) with fully chemically defined cell culture medium to obtain incorporation efficiency at Creative-Proteomics. 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.

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