ELISA/assay

Calreticulin (CRT) ELISA Kit

MBS2023038

24-Strip-Wells

260 USD

ELISA Kit

Calreticulin (CRT) ELISA Kit

[Calreticulin (CRT)]

[CALR; RO; SSA; CC1qR; ERp60; HACBP; grp60; CRTC; CRP55; Calregulin; Sicca Syndrome Antigen A; Autoantigen Ro; Endoplasmic reticulum resident protein 60]

[calreticulin; Calreticulin; calreticulin; calreticulin; CRP55; Calregulin; Endoplasmic reticulum resident protein 60; ERp60; HACBP; grp60]

[CRT]

[CALR; CALR; RO; CRT; SSA; cC1qR; HEL-S-99n; CRTC; ERp60]

CALR_HUMAN

Human

417

This assay has high sensitivity and excellent specificity for detection of Calreticulin (CRT). No significant cross-reactivity or interference between Calreticulin (CRT) and analogues was observed.

The stability of kit is determined by the loss rate of activity. The loss rate of this kit is less than 5% within the expiration date under appropriate storage condition. To minimize extra influence on the performance, operation procedures and lab conditions, especially room temperature, air humidity, incubator temperature should be strictly controlled. It is also strongly suggested that the whole assay is performed by the same operator from the beginning to the end.

Typical Testing Data/Standard Curve (for reference only)

Assay Type: Double-antibody Sandwich. Samples: Serum, Plasma, Tissue homogenates, Cell lysates, Cell culture supernates and Other Biological Fluids. Detection Range: 3.12-200ng/mL. Sensitivity: < 1.22ng/mL

Application: Enzyme-linked immunosorbent assay for Antigen Detection. Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Calreticulin (CRT) were tested 20 times on one plate, respectively. Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Calreticulin (CRT) were tested on 3 different plates, 8 replicates in each plate. CV(%) =: SD/meanX100. Intra-Assay: CV<10%. Inter-Assay: CV<12%

Signal transduction; Metabolic pathway; Bone metabolism

The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Calreticulin (CRT). Standards or samples are then added to the appropriate microtiter plate wells with a biotin-conjugated antibody specific to Calreticulin (CRT). Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain Calreticulin (CRT), biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm 10nm. The concentration of Calreticulin (CRT) in the samples is then determined by comparing the O.D. of the samples to the standard curve.

4757900

NP_004334.1

NM_004343.3

P27797

48,142 Da

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)

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]

Calreticulin: 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. Monomer. Component of an EIF2 complex at least composed of CELF1/CUGBP1, CALR, CALR3, EIF2S1, EIF2S2, HSP90B1 and HSPA5. Interacts with PDIA3/ERp57. Interacts with NR3C1 and TRIM21. Interacts with GABARAP. Belongs to the calreticulin family. Protein type: Secreted; Motility/polarity/chemotaxis; Nuclear receptor co-regulator; Calcium-binding; Secreted, signal peptide. Chromosomal Location of Human Ortholog: 19p13.3-p13.2. Cellular Component: Golgi apparatus; extracellular space; smooth endoplasmic reticulum; focal adhesion; cell surface; sarcoplasmic reticulum lumen; endoplasmic reticulum; endoplasmic reticulum lumen; extracellular region; acrosome; cytosol; polysome; proteinaceous extracellular matrix; membrane; perinuclear region of cytoplasm; cytoplasm; intracellular; nucleus; external side of plasma membrane. Molecular Function: hormone binding; zinc ion binding; complement component C1q binding; unfolded protein binding; calcium ion binding; peptide binding; mRNA binding; integrin binding; protein binding; androgen receptor binding; DNA binding; chaperone binding; ubiquitin protein ligase binding; iron ion binding; carbohydrate binding; glycoprotein binding. Biological Process: protein maturation via protein folding; protein folding; regulation of meiosis; negative regulation of transcription from RNA polymerase II promoter; response to estradiol stimulus; cardiac muscle cell differentiation; regulation of apoptosis; antigen processing and presentation of peptide antigen via MHC class I; regulation of transcription, DNA-dependent; positive regulation of phagocytosis; positive regulation of cell proliferation; antigen processing and presentation of exogenous peptide antigen via MHC class I; protein export from nucleus; cortical actin cytoskeleton organization and biogenesis; cell cycle arrest; response to drug; receptor-mediated endocytosis; negative regulation of steroid hormone receptor signaling pathway; protein stabilization; unfolded protein response; positive regulation of cell cycle; antigen processing and presentation of exogenous peptide antigen via MHC class I, TAP-dependent; response to testosterone stimulus; post-translational protein modification; peptide antigen assembly with MHC class I protein complex; cellular calcium ion homeostasis; negative regulation of retinoic acid receptor signaling pathway; negative regulation of neuron differentiation; unfolded protein response, activation of signaling protein activity; cellular protein metabolic process; glucocorticoid receptor signaling pathway; negative regulation of translation; sequestering of calcium ion; protein amino acid N-linked glycosylation via asparagine; spermatogenesis; negative regulation of transcription, DNA-dependent; positive regulation of DNA replication. Disease: Myelofibrosis; Thrombocythemia 1

24-Strip-Wells

260 USD

48-Strip-Wells

475

96-Strip-Wells

640

5x96-Strip-Wells

2590

10x96-Strip-Wells

4670