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JCHAIN antibody (A02644-2) performs well in ELISA, Flow Cytometry, IF, IHC, ICC, WB and shows reactivity with Human, Mouse, Rat.
- Validated for inter-lot consistency, specificity, and reproducibility
- Committed to quality since 1993
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Flow Cytometry analysis of A431 cells using anti-JCHAIN antibody (A02644-2).
Overlay histogram showing A431 cells stained with A02644-2 (Blue line). The cells were fixed with 4% paraformaldehyde and blocked with 10% normal goat serum. And then incubated with rabbit anti-JCHAIN Antibody (A02644-2, 1 μg/1x106 cells) for 30 min at 20°C. DyLight®488 conjugated goat anti-rabbit IgG (BA1127, 5-10 μg/1x106 cells) was used as secondary antibody for 30 minutes at 20°C. Isotype control antibody (Green line) was rabbit IgG (1 μg/1x106) used under the same conditions. Unlabelled sample (Red line) was also used as a control.
Overlay histogram showing A431 cells stained with A02644-2 (Blue line). The cells were fixed with 4% paraformaldehyde and blocked with 10% normal goat serum. And then incubated with rabbit anti-JCHAIN Antibody (A02644-2, 1 μg/1x106 cells) for 30 min at 20°C. DyLight®488 conjugated goat anti-rabbit IgG (BA1127, 5-10 μg/1x106 cells) was used as secondary antibody for 30 minutes at 20°C. Isotype control antibody (Green line) was rabbit IgG (1 μg/1x106) used under the same conditions. Unlabelled sample (Red line) was also used as a control.
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Anti-JCHAIN Antibody Picoband®
JCHAIN antibody
| Reactive Species | Host | Application |
|---|---|---|
| Human, Mouse, Rat | Rabbit | ELISA, Flow Cytometry, IF, IHC, ICC, WB |
Tested Applications
JCHAIN antibody was positively detected by WB in:
rat small intestine tissue, mouse spleen tissue
Suggested blocking solution with 5% non-fat milk or BSA; (*)Recommended protein loading: 20-40 ug per lane
JCHAIN antibody was positively detected by IHC in:
human thyroid cancer tissue, human liver cancer tissue, rat colon tissue
Use TE buffer pH 9.0 for antigen retrieval; (*) citrate buffer pH 6.0 is an alternative.
JCHAIN antibody was positively detected by ICC/IF in:
U2OS cell
JCHAIN antibody was positively detected by FC in:
A431 cell
Recommend Dilution
Application
Dilution
Species
Western blot
0.25-0.5 μg/ml
Mouse, Rat
Immunohistochemistry(Paraffin-embedded Section)
2-5 μg/ml
Human, Rat
Immunocytochemistry/Immunofluorescence
5 μg/ml
Human
Flow Cytometry (Fixed)
1-3 μg/1x106 cells
Human
ELISA
0.1-0.5 μg/ml
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* It is recommended to optimize the amount of this reagent in each experimental system to achieve the best results.
Note: For flow cytometry (FCM), validated for fixed cells only. Not validated for FACS or surface flow cytometry using live cells.
Reactive Data
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WB
IHC
IF
ELISA
Rat
Tested
Tested
Recommend
Recommend
Mouse
Tested
Recommend
Human
Tested
Recommend
Recommend
Monkey
Predicted
Predicted
Predicted
Predicted
Product Information
Product Name
Anti-JCHAIN Antibody Picoband®
View all JCHAIN Antibodies
View all JCHAIN Antibodies
Form
Lyophilized
Uniprot
Gene ID
Storage & Handling
At -20°C for one year from date of receipt.
After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months.
Avoid repeated freezing and thawing.
Host
Rabbit
Contents
Each vial contains 4 mg Trehalose, 0.9 mg NaCl, 0.2 mg Na2HPO4.
Clonality
Polyclonal
Isotype
IgG
Immunogen
E.coli-derivedhumanJCHAINrecombinantprotein(Position:Q23-D159).HumanJCHAINshares77.4%and73.5%aminoacid(aa)sequenceidentitywithmouseandratJCHAIN,respectively.
Cross-Reactivity
No cross reactivity with other proteins.
Reconstitution
Adding 0.2 ml of distilled water will yield a concentration of 500 µg/ml.
Observed Molecular Weight
23 kDa
Calculated Molecular Weight
18.1 kDa
Background of JCHAIN
Immunoglobulin J chain, also known as IGJ and IGCJ, is a secreted polypeptide which is the first immunoglobulin-related polypeptide expressed during the embryogenesis and differentiation of B cells in the fetal liver. The joining Immunoglobulin J chain is a small polypeptide, expressed by mucosal and glandular plasma cells, which regulates polymer formation of immunoglobulin (Ig)A and IgM. Immunoglobulin J chain / IGJ 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 larger polymers. Immunoglobulin J chain / IGJ also helps to bind these immunoglobulins to the secretory component. J-chain incorporation into polymeric IgA (pIgA, mainly dimers) and pentameric IgM endows these antibodies with several salient features. Immunoglobulin J chain / IGJ is involved in creating the binding site for pIgR / SC in the Ig polymers, not only by determining the polymeric quaternary structure but also by interacting directly with the receptor protein. Both the immunoglobulin J chain / IGJ and the pIgR/SC are key proteins in secretory immunity.
Cite This Product
Anti-JCHAIN Antibody Picoband® (Boster Biological Technology, Pleasanton CA, USA, Catalog # A02644-2)
Antibody Homology Across Species
The results generated by this homology analysis tool for commonly used animal species are shown below. For unlisted species, please refer to the homology analysis between the immunogen sequence and the corresponding species.
A homology of ≥90% is recommended. Generally, higher homology indicates a greater potential for cross-species reactivity. However, protein expression levels may vary among different species, tissues, and cell types. Therefore, the homology analysis results are for reference only and do not guarantee antibody cross-reactivity or experimental performance.
Human
100%
High Homology
Monkey
96%
High Homology
Dog
84%
Moderate Homology
Sheep
82%
Moderate Homology
Mouse
77%
Moderate Homology
Rat
77%
Moderate Homology
Cow
77%
Moderate Homology
Rabbit
73%
Moderate Homology
Homology ≥ 90%High Homology
70% ≤ Homology < 90%Moderate Homology
Homology < 70%Low homology
Protocols
Western Blot protocol for JCHAIN antibody
Immunohistochemistry (IHC) protocol for JCHAIN antibody
Immunocytochemistry/Immunofluorescence (ICC/IF) protocol for JCHAIN antibody
Flow Cytometry (FC) protocol for JCHAIN antibody
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Product Promise
We promise Anti-JCHAIN Antibody Picoband® performs excellently in relevant applications for ELISA, Flow Cytometry, IF, IHC, ICC, WB. If it doesn't perform as promised, we will refund the product. Learn more
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A02644-2
Buy one primary antibody get one 0.5ml HRP or Biotin secondary antibody for free.
*Sample sizes are prepared on demand and will take extra lead time. (cannot be conjugated)
$370.00
Troubleshooting
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We promise all of our products perform as described in datasheets.
This product is for Research Use Only. Not for use in diagnostic procedures.
Update date:
Oct 10, 2026