catalog number :
MBS703504
products type :
ELISA Kit
products full name :
Human Calreticulin, CRT ELISA Kit
products short name :
[calreticulin]
products name syn :
[Human Calreticulin; CRT ELISA Kit; CRT; FLJ26680; RO; SSA; cC1qR; Sicca syndrome antigen A (autoantigen Ro; calreticulin) ; autoantigen Ro; calreticulin]
other names :
[calreticulin; Calreticulin; calreticulin; CRP55; ERp60; HACBP; grp60; calregulin; endoplasmic reticulum resident protein 60; epididymis secretory sperm binding protein Li 99n; Sicca syndrome antigen A (autoantigen Ro; calreticulin); calreticulin; CRP55; Calregulin; Endoplasmic reticulum resident protein 60; ERp60; HACBP; grp60]
products gene name :
[CALR]
other gene names :
[CALR; CALR; RO; CRT; SSA; cC1qR; HEL-S-99n; CRTC; ERp60]
uniprot entry name :
CALR_HUMAN
specificity :
This assay has high sensitivity and excellent specificity for detection of sheep CRP. No significant cross-reactivity or interference between sheep CRP and analogues was observed.
storage stability :
Unopened test kits should be stored at 2 to 8 degree C upon receipt. Please refer to pdf manual for further storage instructions.
image1 heading :
Typical Testing Data/Standard Curve (for reference only)
other info1 :
Samples: Serum, Plasma, Tissue Homogenates, Cell Lysates. Assay Type: Quantitative Sandwich. Detection Range: 0.625 ug/ml-40 ug/ml. Sensitivity: 0.156 ug/ml.
other info2 :
Intra-assay Precision: Intra-assay Precision (Precision within an assay): CV%<8%. Three samples of known concentration were tested twenty times on one plate to assess. Inter-assay Precision: Inter-assay Precision (Precision between assays): CV%<10%. Three samples of known concentration were tested in twenty assays to assess.
products description :
Principle of the Assay: This assay employs the quantitative sandwich enzyme immunoassay technique. Antibody specific for CRP has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and any CRP present is bound by the immobilized antibody. After removing any unbound substances, a biotin-conjugated antibody specific for CRP is added to the wells. After washing, avidin conjugated Horseradish Peroxidase (HRP) is added to the wells. Following a wash to remove any unbound avidin-enzyme reagent, a substrate solution is added to the wells and color develops in proportion to the amount of CRP bound in the initial step. The color development is stopped and the intensity of the color is measured.
ncbi acc num :
NP_004334.1
ncbi gb acc num :
NM_004343.3
ncbi mol weight :
48,142 Da
ncbi pathways :
ATF6-alpha Activates Chaperone Genes Pathway (530770); ATF6-alpha Activates Chaperones Pathway (105905); Adaptive Immune System Pathway (366160); Androgen Receptor Signaling Pathway (198806); Antigen Presentation: Folding, Assembly And Peptide Loading Of Class I MHC Pathway (366163); Antigen Processing And Presentation Pathway (83074); Antigen Processing And Presentation Pathway (485); Antigen Processing-Cross Presentation Pathway (477122); Asparagine N-linked Glycosylation Pathway (161013); Assembly Of Viral Components At The Budding Site Pathway (106084)
ncbi summary :
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. [provided by RefSeq, Jul 2008]
uniprot summary :
Function: Calcium-binding chaperone that promotes folding, oligomeric assembly and quality control in the endoplasmic reticulum (ER) via the calreticulin/calnexin cycle. This lectin interacts transiently with almost all of the monoglucosylated glycoproteins that are synthesized in the ER. Interacts with the DNA-binding domain of NR3C1 and mediates its nuclear export. Involved in maternal gene expression regulation. May participate in oocyte maturation via the regulation of calcium homeostasis 2 PublicationsManual assertion based on experiment in:Ref.20
size1 :
24-Strip-Wells (LIMIT 1)
size5 :
10x96-Strip-Wells