Product Info Summary
| SKU: | A00894-1 |
|---|---|
| Size: | 100 μg/vial |
| Reactive Species: | Human, Mouse, Rat |
| Host: | Rabbit |
| Application: | ELISA, Flow Cytometry, IHC, WB |
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Product info
Product Name
Anti-Calreticulin/CALR Antibody Picoband®
SKU/Catalog Number
A00894-1
Size
100 μg/vial
Form
Lyophilized
Description
Boster Bio Anti-Calreticulin/CALR Antibody Picoband® catalog # A00894-1. Tested in ELISA, Flow Cytometry, IHC, WB applications. This antibody reacts with Human, Mouse, Rat. The brand Picoband indicates this is a premium antibody that guarantees superior quality, high affinity, and strong signals with minimal background in Western blot applications. Only our best-performing antibodies are designated as Picoband, ensuring unmatched performance.
Storage & Handling
Store 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 freeze-thaw cycles.
Cite This Product
Anti-Calreticulin/CALR Antibody Picoband® (Boster Biological Technology, Pleasanton CA, USA, Catalog # A00894-1)
Host
Rabbit
Contents
Each vial contains 4mg Trehalose, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg NaN3.
Clonality
Polyclonal
Isotype
Rabbit IgG
Immunogen
E.coli-derived human Calreticulin/CALR recombinant protein (Position: E18-S323).
Cross-reactivity
No cross-reactivity with other proteins.
Reactive Species
A00894-1 is reactive to CALR in Human, Mouse, Rat
Observed Molecular Weight
60 kDa
Calculated molecular weight
48.1 kDa
Background of CALR
Calreticulin also known as calregulin, CRP55, CaBP3, calsequestrin-like protein, and endoplasmic reticulum resident protein 60 (ERp60) is a protein that in humans is encoded by the CALR gene. It is mapped to 19p13.13. Calreticulin is a multifunctional protein that acts as a major Ca (2+)-binding (storage) protein in the lumen of the endoplasmic reticulum. It is also found in the nucleus, suggesting that it may have a role in transcription regulation. Calreticulin binds to the synthetic peptide KLGFFKR, which is almost identical to an amino acid sequence in the DNA-binding domain of the superfamily of nuclear receptors. Calreticulin binds to antibodies in certain sera of systemic lupus and Sjogren patients which contain anti-Ro/SSA antibodies, it is highly conserved among species, and it is located in the endoplasmic and sarcoplasmic reticulum where it may bind calcium. The amino terminus of calreticulin interacts with the DNA-binding domain of the glucocorticoid receptor and prevents the receptor from binding to its specific glucocorticoid response element. Calreticulin can inhibit the binding of androgen receptor to its hormone-responsive DNA element and can inhibit androgen receptor and retinoic acid receptor transcriptional activities in vivo, as well as retinoic acid-induced neuronal differentiation. Thus, calreticulin can act as an important modulator of the regulation of gene transcription by nuclear hormone receptors. Systemic lupus erythematosus is associated with increased autoantibody titers against calreticulin but calreticulin is not a Ro/SS-A antigen. Earlier papers referred to calreticulin as an Ro/SS-A antigen but this was later disproven. Increased autoantibody titer against human calreticulin is found in infants with complete congenital heart block of both the IgG and IgM classes.
Antibody Validation
Boster validates all antibodies on WB, IHC, ICC, Immunofluorescence, and ELISA with known positive control and negative samples to ensure specificity and high affinity, including thorough antibody incubations.
Application & Images
Applications
A00894-1 is guaranteed for ELISA, Flow Cytometry, IHC, WB Boster Guarantee
Assay Dilutions Recommendation
The recommendations below provide a starting point for assay optimization. The actual working concentration varies and should be decided by the user.
Western blot, 0.1-0.25μg/ml, Human
Immunohistochemistry (Paraffin-embedded Section), 0.5-1μg/ml, Human, Mouse, Rat
Flow Cytometry (Fixed), 1-3μg/1x106 cells, Human
ELISA, 0.1-0.5μg/ml, -
Positive Control
WB: human placenta tissue, human U-87MG whole cell, human U-937 whole cell, human HepG2 whole cell, human THP-1 whole cell, human T-47D whole cell, human PC-3 whole cell
IHC: human intestinal cancer tissue, human prostatic cancer tissue, human thyroid cancer tissue, mouse intestine tissue, rat intestine tissue
FCM: HepG2 cell
Validation Images & Assay Conditions
Click image to see more details
Western blot analysis of CALR using anti-CALR antibody (A00894-1).
Electrophoresis was performed on a 5-20% SDS-PAGE gel at 70V (Stacking gel) / 90V (Resolving gel) for 2-3 hours. The sample well of each lane was loaded with 50ug of sample under reducing conditions.
Lane 1: human placenta tissue lysates,
Lane 2: human U-87MG whole cell lysates,
Lane 3: human U-937 whole cell lysates,
Lane 4: human HepG2 whole cell lysates,
Lane 5: human THP-1 whole cell lysates,
Lane 6: human T-47D whole cell lysates,
Lane 7: human PC-3 whole cell lysates.
After Electrophoresis, proteins were transferred to a Nitrocellulose membrane at 150mA for 50-90 minutes. Blocked the membrane with 5% Non-fat Milk/ TBS for 1.5 hour at RT. The membrane was incubated with rabbit anti-CALR antigen affinity purified polyclonal antibody (Catalog # A00894-1) at 0.5 μg/mL overnight at 4°C, then washed with TBS-0.1%Tween 3 times with 5 minutes each and probed with a goat anti-rabbit IgG-HRP secondary antibody at a dilution of 1:10000 for 1.5 hour at RT. The signal is developed using an Enhanced Chemiluminescent detection (ECL) kit (Catalog # EK1002) with Tanon 5200 system. A specific band was detected for CALR at approximately 60KD. The expected band size for CALR is at 48KD.
Click image to see more details
IHC analysis of CALR using anti-CALR antibody (A00894-1).
CALR was detected in paraffin-embedded section of human intestinal cancer tissues. Heat mediated antigen retrieval was performed in citrate buffer (pH6, epitope retrieval solution) for 20 mins. The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 1μg/ml rabbit anti-CALR Antibody (A00894-1) overnight at 4°C. Biotinylated goat anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37°C. The tissue section was developed using Strepavidin-Biotin-Complex (SABC)(Catalog # SA1022) with DAB as the chromogen.
Click image to see more details
IHC analysis of CALR using anti-CALR antibody (A00894-1).
CALR was detected in paraffin-embedded section of human prostatic cancer tissues. Heat mediated antigen retrieval was performed in citrate buffer (pH6, epitope retrieval solution) for 20 mins. The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 1μg/ml rabbit anti-CALR Antibody (A00894-1) overnight at 4°C. Biotinylated goat anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37°C. The tissue section was developed using Strepavidin-Biotin-Complex (SABC)(Catalog # SA1022) with DAB as the chromogen.
Click image to see more details
IHC analysis of CALR using anti-CALR antibody (A00894-1).
CALR was detected in paraffin-embedded section of human thyroid cancer tissues. Heat mediated antigen retrieval was performed in citrate buffer (pH6, epitope retrieval solution) for 20 mins. The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 1μg/ml rabbit anti-CALR Antibody (A00894-1) overnight at 4°C. Biotinylated goat anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37°C. The tissue section was developed using Strepavidin-Biotin-Complex (SABC)(Catalog # SA1022) with DAB as the chromogen.
Click image to see more details
IHC analysis of CALR using anti-CALR antibody (A00894-1).
CALR was detected in paraffin-embedded section of mouse intestine tissues. Heat mediated antigen retrieval was performed in citrate buffer (pH6, epitope retrieval solution) for 20 mins. The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 1μg/ml rabbit anti-CALR Antibody (A00894-1) overnight at 4°C. Biotinylated goat anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37°C. The tissue section was developed using Strepavidin-Biotin-Complex (SABC)(Catalog # SA1022) with DAB as the chromogen.
Click image to see more details
IHC analysis of CALR using anti-CALR antibody (A00894-1).
CALR was detected in paraffin-embedded section of rat intestine tissues. Heat mediated antigen retrieval was performed in citrate buffer (pH6, epitope retrieval solution) for 20 mins. The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 1μg/ml rabbit anti-CALR Antibody (A00894-1) overnight at 4°C. Biotinylated goat anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37°C. The tissue section was developed using Strepavidin-Biotin-Complex (SABC)(Catalog # SA1022) with DAB as the chromogen.
Click image to see more details
Flow Cytometry analysis of HepG2 cells using anti-CALR antibody (A00894-1).
Overlay histogram showing HepG2 cells stained with A00894-1 (Blue line). To facilitate intracellular staining, cells were fixed with 4% paraformaldehyde and permeabilized with permeabilization buffer. The cells were blocked with 10% normal goat serum. And then incubated with rabbit anti-CALR Antibody (A00894-1,1μg/1x106 cells) for 30 min at 20°C. DyLight®488 conjugated goat anti-rabbit IgG (BA1127, 5-10μg/1x106 cells) was used as secondary antibody for 30 minutes at 20°C. Isotype control antibody (Green line) was rabbit IgG (1μg/1x106) used under the same conditions. Unlabelled sample without incubation with primary antibody and secondary antibody (Red line) was used as a blank control.
Specific Publications For Anti-Calreticulin/CALR Antibody Picoband® (A00894-1)
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Customer Q&As
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7 Customer Q&As for Anti-Calreticulin/CALR Antibody Picoband®
Question
To Boster Support: I am interested to purchase the Anti-Calreticulin/CALR Antibody Picoband but I need more information about it. Is the antibody could be used to detect calreticulin on cell membrane surface by flow cytometry?
Verified Customer
Verified customer
Asked: 2020-05-04
Answer
The product Anti-Calreticulin/CALR Antibody Picoband have been tested and validated to work well in Flow Cytometry with the specific species mentioned in the datasheets.
Boster Scientific Support
Answered: 2020-05-04
Question
For this product Anti-Calreticulin/CALR Antibody Picoband, does the storage buffer actually contain PBS or it is a whole ant-serum plus sodium azide?
Verified Customer
Verified customer
Asked: 2020-05-01
Answer
The product Anti-Calreticulin/CALR Antibody Picoband formulation is 100
Boster Scientific Support
Answered: 2020-05-01
Question
Our lab used your anti-Calreticulin/CALR antibody for ELISA on brain a few years ago. I am using mouse, and We intend to use the antibody for WB next. I am interested in examining brain as well as keratinocyte in our next experiment. Do you have any suggestion on which antibody would work the best for WB?
Verified Customer
Verified customer
Asked: 2020-04-16
Answer
I have checked the website and datasheets of our anti-Calreticulin/CALR antibody and it seems that A00894-1 has been validated on mouse in both ELISA and WB. Thus A00894-1 should work for your application. Our Boster satisfaction guarantee will cover this product for WB in mouse even if the specific tissue type has not been validated. We do have a comprehensive range of products for WB detection and you can check out our website bosterbio.com to find out more information about them.
Boster Scientific Support
Answered: 2020-04-16
Question
We want using your anti-Calreticulin/CALR antibody for sequestering of calcium ion studies. Has this antibody been tested with western blotting on hepg2 whole cell lysates? We would like to see some validation images before ordering.
Z. Baker
Verified customer
Asked: 2019-11-15
Answer
Thanks for your inquiry. This A00894-1 anti-Calreticulin/CALR antibody is tested on human placenta tissue, hepg2 whole cell lysates. It is guaranteed to work for ELISA, Flow Cytometry, IHC-P, WB in human, mouse, rat. Our Boster guarantee will cover your intended experiment even if the sample type has not been be directly tested.
Boster Scientific Support
Answered: 2019-11-15
Question
We were happy with the WB result of your anti-Calreticulin/CALR antibody. However we have been able to see positive staining in colon carcinoma endoplasmic reticulum lumen using this antibody. Is that expected? Could you tell me where is CALR supposed to be expressed?
Verified Customer
Verified customer
Asked: 2019-11-12
Answer
Based on literature, colon carcinoma does express CALR. Generally CALR expresses in endoplasmic reticulum lumen. Regarding which tissues have CALR expression, here are a few articles citing expression in various tissues:
Colon carcinoma, Pubmed ID: 9150948
Eye, Pancreas, and Skin, Pubmed ID: 15489334
Keratinocyte, Pubmed ID: 1286667
Liver, Pubmed ID: 19159218, 24275569
Placenta, Pubmed ID: 7841019, 11322874
Boster Scientific Support
Answered: 2019-11-12
Question
We are currently using anti-Calreticulin/CALR antibody A00894-1 for mouse tissue, and we are content with the WB results. The species of reactivity given in the datasheet says human, mouse, rat. Is it possible that the antibody can work on dog tissues as well?
Verified Customer
Verified customer
Asked: 2019-09-20
Answer
The anti-Calreticulin/CALR antibody (A00894-1) has not been validated for cross reactivity specifically with dog tissues, though there is a good chance of cross reactivity. We have an innovator award program that if you test this antibody and show it works in dog you can get your next antibody for free. Please contact me if I can help you with anything.
Boster Scientific Support
Answered: 2019-09-20
Question
We have observed staining in human thyroid gland. Any tips? Is anti-Calreticulin/CALR antibody supposed to stain thyroid gland positively?
Verified Customer
Verified customer
Asked: 2019-09-11
Answer
Based on literature thyroid gland does express CALR. Based on Uniprot.org, CALR is expressed in thyroid gland, eye, pancreas skin, placenta, liver, brain, cajal-retzius cell fetal brain cortex, keratinocyte, colon carcinoma, among other tissues. Regarding which tissues have CALR expression, here are a few articles citing expression in various tissues:
Colon carcinoma, Pubmed ID: 9150948
Eye, Pancreas, and Skin, Pubmed ID: 15489334
Keratinocyte, Pubmed ID: 1286667
Liver, Pubmed ID: 19159218, 24275569
Placenta, Pubmed ID: 7841019, 11322874
Boster Scientific Support
Answered: 2019-09-11


