Recombinant Rat Serine Protease Inhibitor A3K (SERPINA3K) Protein (His&Myc)

Name: Recombinant Rat Serine Protease Inhibitor A3K (SERPINA3K) Protein (His&Myc)
Brand: Beta LifeScience
SKU: BLC-04751P
Availability: InStock

Greater than 85% as determined by SDS-PAGE.

Our products are highly customizable to meet your specific needs. You can choose options such as endotoxin removal, liquid or lyophilized forms, preferred tags, and the desired functional sequence range for proteins. Submitting a written inquiry expedites the quoting process.

Product Overview

Description	Recombinant Rat Serine Protease Inhibitor A3K (SERPINA3K) Protein (His&Myc) is produced by our E.coli expression system. This is a full length protein.
Purity	Greater than 85% as determined by SDS-PAGE.
Uniprotkb	P05545
Target Symbol	SERPINA3K
Synonyms	Serpina3k; Spin2b; Serine protease inhibitor A3K; Serpin A3K; CPI-21; Contrapsin-like protease inhibitor 1; GHR-P63; Growth hormone-regulated proteinase inhibitor; Kallikrein-binding protein; KBP; SPI-2.3; Serine protease inhibitor 2; SPI-2; Thyroid hormone-regulated protein
Species	Rattus norvegicus (Rat)
Expression System	E.coli
Tag	N-10His&C-Myc
Target Protein Sequence	DGILGRDTLPHEDQGKGRQLHSLTLASINTDFTLSLYKKLALRNPDKNVVFSPLSISAALAILSLGAKDSTMEEILEVLKFNLTEITEEEIHQGFGHLLQRLSQPEDQAEINTGSALFIDKEQPILSEFQEKTRALYQAEAFVADFKQCNEAKKFINDYVSNQTQGKIAELFSELDERTSMVLVNYLLFKGKWKVPFNPNDTFESEFYLDEKRSVKVPMMKIKDLTTPYIRDEELSCSVLELKYTGNASALFILPDQGKMQQVESSLQPETLKKWKDSLRPRIISELRMPKFSISTDYNLEEVLPELGIRKIFSQQADLSRITGTKNLHVSQVVHKAVLDVDETGTEGAAATAVTAALKSLPQTIPLLNFNRPFMLVITDNNGQSVFFMGKVTNPM
Expression Range	21-416aa
Protein Length	Full Length of Mature Protein
Mol. Weight	52.0 kDa
Research Area	Others
Form	Liquid or Lyophilized powder
Buffer	Liquid form: default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. Lyophilized powder form: the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Reconstitution	Briefly centrifuged the vial prior to opening to bring the contents to the bottom. Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. It is recommended to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. The default final concentration of glycerol is 50%.
Storage	1. Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. 2. Avoid repeated freeze-thaw cycles. 3. Store working aliquots at 4°C for up to one week. 4. In general, protein in liquid form is stable for up to 6 months at -20°C/-80°C. Protein in lyophilized powder form is stable for up to 12 months at -20°C/-80°C.
Notes	Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Target Details

Target Function	Binds to and inhibits kallikreins. Inhibits trypsin but not chymotrypsin or elastase.
Subcellular Location	Secreted.
Protein Families	Serpin family
Database References	KEGG: rno:24794 STRING: 10116.ENSRNOP00000013896 UniGene: Rn.91257
Tissue Specificity	Liver and plasma.

Gene Functions References

KBP suppressed lipopolysaccharide-induced TNF-alpha production via upregulating SOCS3 expression. PMID: 23129128
KBP competed with (125)I-VEGF for binding to endothelial cells and down-regulated VEGF production in endothelial cells and in the retina of the oxygen-induced retinopathy rat model PMID: 12743698
in a rat model of chronic mycardial infarction (MI) kallistatin improves cardiac performance and prevents post-MI-induced cardiac hypertrophy and fibrosis through its antioxidant action. PMID: 18762777
An inverse relationship exists between oxidative stress and kallistatin levels in the circulation and blood vessels. Kallistatin expression is negatively regulated by oxidative stress via JNK-dependent FOXO1 activation in cultured endothelial cells. PMID: 20081110
Pivotal role for alpha1-antichymotrypsin in skin repair PMID: 21693707
SERPINA3K is an antifibrogenic factor, and its antifibrogenic activity is through blocking the Wnt pathway. Decreased SERPINA3K levels may contribute to the fibrosis in diabetic retinopathy. PMID: 20299474
SERPINA3K is a high-affinity, endogenous antagonist of LRP6 PMID: 20351274

FAQs

Please fill out the Online Inquiry form located on the product page. Key product information has been pre-populated. You may also email your questions and inquiry requests to sales1@betalifesci.com. We will do our best to get back to you within 4 business hours.

Feel free to use the Chat function to initiate a live chat. Our customer representative can provide you with a quote immediately.

Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.