Recombinant Human Immunoglobulin J Chain (JCHAIN) Protein (MBP&His)

Name: Recombinant Human Immunoglobulin J Chain (JCHAIN) Protein (MBP&His)
Brand: Beta LifeScience
SKU: BLC-03944P
Price: 299.0 USD
Availability: InStock

Greater than 85% as determined by SDS-PAGE.

Price Save $1,179

Size

100ug

Product Overview

Description	Recombinant Human Immunoglobulin J Chain (JCHAIN) Protein (MBP&His) is produced by our Baculovirus expression system. This is a full length protein.
Purity	Greater than 85% as determined by SDS-PAGE.
Uniprotkb	P01591
Target Symbol	JCHAIN
Synonyms	IGCJ ; IGJ_HUMAN; Immunoglobulin J chain; Immunoglobulin J polypeptide linker protein for immunoglobulin alpha and mu polypeptides; immunoglobulin joining chain; JCH; JCHAIN; Joining chain of multimeric IgA and IgM
Species	Homo sapiens (Human)
Expression System	Baculovirus
Tag	N-MBP&C-6His
Target Protein Sequence	QEDERIVLVDNKCKCARITSRIIRSSEDPNEDIVERNIRIIVPLNNRENISDPTSPLRTRFVYHLSDLCKKCDPTEVELDNQIVTATQSNICDEDSATETCYTYDRNKCYTAVVPLVYGGETKMVETALTPDACYPD
Expression Range	23-159aa
Protein Length	Full Length of Mature Protein
Mol. Weight	59.6kDa
Research Area	Immunology
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	Serves to link two monomer units of either IgM or IgA. In the case of IgM, the J chain-joined dimer is a nucleating unit for the IgM pentamer, and in the case of IgA it induces dimers and/or larger polymers. It also helps to bind these immunoglobulins to secretory component.
Subcellular Location	Secreted.
Database References	HGNC: 5713 OMIM: 147790 KEGG: hsa:3512 STRING: 9606.ENSP00000254801 UniGene: Hs.643431

Gene Functions References

TLR2 ligands induce CCR9 and CCR10 expression by circulating B-cells and increase their chemotaxis. TLR2 stimulation also induced J chain and IgA production demonstrating the induction of mucosal-like antibody secreting cells. PMID: 20947433

FAQs

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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.