Purity
Greater than 90% as determined by SDS-PAGE.
Alternative Names
Klkb1; Klk3; PkPlasma kallikrein; EC 3.4.21.34; Fletcher factor; Kininogenin; Plasma prekallikrein) [Cleaved into: Plasma kallikrein heavy chain; Plasma kallikrein light chain]
Species
Rattus norvegicus (Rat)
Expression Region
391-638aa
Target Protein Sequence
IVGGTNSSLGEWPWQVSLQVKLVSQNHMCGGSIIGRQWILTAAHCFDGIPYPDVWRIYGGILNLSEITNKTPFSSIKELIIHQKYKMSEGSYDIALIKLQTPLNYTEFQKPICLPSKADTNTIYTNCWVTGWGYTKERGETQNILQKATIPLVPNEECQKKYRDYVITKQMICAGYKEGGIDACKGDSGGPLVCKHSGRWQLVGITSWGEGCARKEQPGVYTKVAEYIDWILEKIQSSKERALETSPA
Note: The complete sequence including tag
sequence, target protein sequence and linker sequence could be provided upon request.
Protein Length
Plasma kallikrein light chain
Tag Info
N-terminal 6xHis-tagged
Form
Liquid or Lyophilized powder
Note: We will preferentially ship the format that
we have in stock, however, if you have any special requirement for the format, please remark your
requirement when placing the order, we will prepare according to your demand.
Buffer
If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol.
Note: If you have any special requirement for the
glycerol content, please remark when you place the order.
If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer,
6% Trehalose, pH 8.0.
Reconstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Storage Condition
Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw
cycles.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature
and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized
form is 12 months at -20°C/-80°C.
Lead Time
3-7 business days
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet & COA
Please contact us to get it.
Description
This Recombinant Rat Plasma kallikrein (Klkb1) (partial) is the Plasma kallikrein light chain corresponding to the amino acid sequence of 391-638. E.coli-expressed recombinant Klkb1 protein was fused with an N-terminal 6xHis-tag. It has a high purity (>90%) measured by SDS-PAGE. Based on the below functions, this Klkb1 protein may find uses in the studies of Klkb1-targeted MS therapeutic development and research.
Klkb1 is a specific direct regulator of blood-brain barrier (BBB) integrity. In the active central nervous system (CNS) lesions of patients with multiple sclerosis (MS), klkb1 precursor plasma kinin (PK) levels were significantly increased. PK deficiency or pharmacologic blockade makes the mice less prone to experimental autoimmune encephalomyelitis and is accompanied by a significant reduction of BBB destruction and CNS inflammation. Klkb1 inhibition can decrease cell invasion during neuroinflammation, which may provide a strategy against Ms.
