Recombinant Human Complement C1s subcomponent (C1S)

In Stock
Code: CSB-EP003657HU
Size:
20ug
20ug100ug1mg(1mg*1 or 500ug*2)
US$256
Quantity:
Express system: E.coli
Species: Homo sapiens (Human)
Tag Info: N-terminal 10xHis-tagged
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Product Details

Purity
Greater than 85% as determined by SDS-PAGE.
Target Names
C1S
Uniprot NO.
Research Area
Immunology
Species
Homo sapiens (Human)
Source
E.coli
Expression Region
16-688aa
Target Protein Sequence
EPTMYGEILSPNYPQAYPSEVEKSWDIEVPEGYGIHLYFTHLDIELSENCAYDSVQIISGDTEEGRLCGQRSSNNPHSPIVEEFQVPYNKLQVIFKSDFSNEERFTGFAAYYVATDINECTDFVDVPCSHFCNNFIGGYFCSCPPEYFLHDDMKNCGVNCSGDVFTALIGEIASPNYPKPYPENSRCEYQIRLEKGFQVVVTLRREDFDVEAADSAGNCLDSLVFVAGDRQFGPYCGHGFPGPLNIETKSNALDIIFQTDLTGQKKGWKLRYHGDPMPCPKEDTPNSVWEPAKAKYVFRDVVQITCLDGFEVVEGRVGATSFYSTCQSNGKWSNSKLKCQPVDCGIPESIENGKVEDPESTLFGSVIRYTCEEPYYYMENGGGGEYHCAGNGSWVNEVLGPELPKCVPVCGVPREPFEEKQRIIGGSDADIKNFPWQVFFDNPWAGGALINEYWVLTAAHVVEGNREPTMYVGSTSVQTSRLAKSKMLTPEHVFIHPGWKLLEVPEGRTNFDNDIALVRLKDPVKMGPTVSPICLPGTSSDYNLMDGDLGLISGWGRTEKRDRAVRLKAARLPVAPLRKCKEVKVEKPTADAEAYVFTPNMICAGGEKGMDSCKGDSGGAFAVQDPNDKTKFYAAGLVSWGPQCGTYGLYTRVKNYVDWIMKTMQENSTPRED
Note: The complete sequence may include tag sequence, target protein sequence, linker sequence and extra sequence that is translated with the protein sequence for the purpose(s) of secretion, stability, solubility, etc.
If the exact amino acid sequence of this recombinant protein is critical to your application, please explicitly request the full and complete sequence of this protein before ordering.
Mol. Weight
80.9 kDa
Protein Length
Full Length of Mature Protein
Tag Info
N-terminal 10xHis-tagged
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
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. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose.
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
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.
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
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Troubleshooting and FAQs
Datasheet & COA
Please contact us to get it.
Images
  • (Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.
Description

The expression of the recombinant Human C1S protein entails introducing a DNA expression vector containing the gene for the desired protein (16-688aa) into e.coli cells through transformation. Subsequently, the cells are cultured to facilitate the expression of the intended protein. The protein features a N-terminal 10xHis tag fusion. The resulting recombinant Human C1S protein is then gathered and purified from the cell lysate using affinity purification. Its purity, determined by SDS-PAGE, exceeds 85%.

Customer Reviews and Q&A

 Customer Reviews

Target Background

Function(From Uniprot)
C1s B chain is a serine protease that combines with C1q and C1r to form C1, the first component of the classical pathway of the complement system. C1r activates C1s so that it can, in turn, activate C2 and C4.
Gene References into Functions
  1. TNT003, an inhibitor of the serine protease C1s, prevents complement activation induced by cold agglutinins. PMID:24695853
  2. Data indicate that complement C1s mRNA level was low in ICR-derived glomerulonephritis (ICGN) mice liver as compared with age-matched ICR mice. PMID:23989031
  3. A molecular switch governs the interaction between the human complement protease C1s and its substrate, complement C4. PMID:23592783
  4. Four positively charged amino acids on the serine protease domain appear to form a catalytic exosite that is required for efficient cleavage of C4 in the classical pathway of complement. PMID:22855709
  5. Detailed mapping of post-translational modifications and insights into the C1r/C1s binding sites. PMID:20008834
  6. Interaction with the prime side residues at the cleavage point in C1s enhances the affinity of the enzyme for complement 2 and complement 4 substrates; these prime subsite residues mediate positive cooperativity in the cleavage of the substrate. PMID:14674770
  7. full specificity of the enzyme using a randomized phage display library PMID:16169853
  8. There are splice variants of C1s mRNA transcripts in normal human cells PMID:18062908

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Protein Families
Peptidase S1 family
Database Links

HGNC: 1247

UNIGENE: Hs.458355

KEGG: hsa:716

STRING: 9606.ENSP00000328173

OMIM: 120580

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