Product: COMP Antibody
Catalog: DF13438
Description: Rabbit polyclonal antibody to COMP
Application: WB IHC
Reactivity: Human, Mouse, Rat
Prediction: Pig, Bovine, Horse, Sheep, Dog
Mol.Wt.: 82kDa; 83kD(Calculated).
Uniprot: P49747
RRID: AB_2846457

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 100ul $280 In stock
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Product Info

Source:
Rabbit
Application:
IHC 1:50-1:200, WB 1:500-1:2000
*The optimal dilutions should be determined by the end user.
*Tips:

WB: For western blot detection of denatured protein samples. IHC: For immunohistochemical detection of paraffin sections (IHC-p) or frozen sections (IHC-f) of tissue samples. IF/ICC: For immunofluorescence detection of cell samples. ELISA(peptide): For ELISA detection of antigenic peptide.

Reactivity:
Human,Mouse,Rat
Prediction:
Pig(100%), Bovine(100%), Horse(100%), Sheep(100%), Dog(100%)
Clonality:
Polyclonal
Specificity:
COMP Antibody detects endogenous levels of total COMP.
RRID:
AB_2846457
Cite Format: Affinity Biosciences Cat# DF13438, RRID:AB_2846457.
Conjugate:
Unconjugated.
Purification:
The antiserum was purified by peptide affinity chromatography using SulfoLink™ Coupling Resin (Thermo Fisher Scientific).
Storage:
Rabbit IgG in phosphate buffered saline , pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol. Store at -20 °C. Stable for 12 months from date of receipt.
Alias:

Fold/Unfold

cartilage oligomeric matrix protein (pseudoachondroplasia, epiphyseal dysplasia 1, multiple); Cartilage oligomeric matrix protein; Cartilage oligomeric matrix protein precursor; COMP; COMP_HUMAN; EDM 1; EDM1; EPD 1; EPD1; Epiphyseal dysplasia 1; Epiphyseal dysplasia 1 multiple; Epiphyseal dysplasia multiple 1; MED; MGC13181; MGC149768; PSACH; pseudoachondroplasia (epiphyseal dysplasia 1, multiple); Pseudoachondroplasia; THBS 5; THBS5; Thrombospondin 5; Thrombospondin-5; Thrombospondin5; TSP5;

Immunogens

Immunogen:
Uniprot:
Gene(ID):
Expression:
P49747 COMP_HUMAN:

Abundantly expressed in the chondrocyte extracellular matrix, and is also found in bone, tendon, ligament and synovium and blood vessels. Increased amounts are produced during late stages of osteoarthritis in the area adjacent to the main defect.

Sequence:
MVPDTACVLLLTLAALGASGQGQSPLGSDLGPQMLRELQETNAALQDVRELLRQQVREITFLKNTVMECDACGMQQSVRTGLPSVRPLLHCAPGFCFPGVACIQTESGARCGPCPAGFTGNGSHCTDVNECNAHPCFPRVRCINTSPGFRCEACPPGYSGPTHQGVGLAFAKANKQVCTDINECETGQHNCVPNSVCINTRGSFQCGPCQPGFVGDQASGCQRRAQRFCPDGSPSECHEHADCVLERDGSRSCVCAVGWAGNGILCGRDTDLDGFPDEKLRCPERQCRKDNCVTVPNSGQEDVDRDGIGDACDPDADGDGVPNEKDNCPLVRNPDQRNTDEDKWGDACDNCRSQKNDDQKDTDQDGRGDACDDDIDGDRIRNQADNCPRVPNSDQKDSDGDGIGDACDNCPQKSNPDQADVDHDFVGDACDSDQDQDGDGHQDSRDNCPTVPNSAQEDSDHDGQGDACDDDDDNDGVPDSRDNCRLVPNPGQEDADRDGVGDVCQDDFDADKVVDKIDVCPENAEVTLTDFRAFQTVVLDPEGDAQIDPNWVVLNQGREIVQTMNSDPGLAVGYTAFNGVDFEGTFHVNTVTDDDYAGFIFGYQDSSSFYVVMWKQMEQTYWQANPFRAVAEPGIQLKAVKSSTGPGEQLRNALWHTGDTESQVRLLWKDPRNVGWKDKKSYRWFLQHRPQVGYIRVRFYEGPELVADSNVVLDTTMRGGRLGVFCFSQENIIWANLRYRCNDTIPEDYETHQLRQA

Predictions

Predictions:

Score>80(red) has high confidence and is suggested to be used for WB detection. *The prediction model is mainly based on the alignment of immunogen sequences, the results are for reference only, not as the basis of quality assurance.

Species
Results
Score
Pig
100
Horse
100
Bovine
100
Sheep
100
Dog
100
Zebrafish
75
Chicken
75
Xenopus
0
Rabbit
0
Model Confidence:
High(score>80) Medium(80>score>50) Low(score<50) No confidence

PTMs - P49747 As Substrate

Site PTM Type Enzyme
N742 N-Glycosylation

Research Backgrounds

Function:

May play a role in the structural integrity of cartilage via its interaction with other extracellular matrix proteins such as the collagens and fibronectin. Can mediate the interaction of chondrocytes with the cartilage extracellular matrix through interaction with cell surface integrin receptors. Could play a role in the pathogenesis of osteoarthritis. Potent suppressor of apoptosis in both primary chondrocytes and transformed cells. Suppresses apoptosis by blocking the activation of caspase-3 and by inducing the IAP family of survival proteins (BIRC3, BIRC2, BIRC5 and XIAP). Essential for maintaining a vascular smooth muscle cells (VSMCs) contractile/differentiated phenotype under physiological and pathological stimuli. Maintains this phenotype of VSMCs by interacting with ITGA7 (By similarity).

Subcellular Location:

Secreted>Extracellular space>Extracellular matrix.

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionSubcellular location
Tissue Specificity:

Abundantly expressed in the chondrocyte extracellular matrix, and is also found in bone, tendon, ligament and synovium and blood vessels. Increased amounts are produced during late stages of osteoarthritis in the area adjacent to the main defect.

Subunit Structure:

Pentamer; disulfide-linked. Exists in a more compact conformation in the presence of calcium and shows a more extended conformation in the absence of calcium. Interacts with ITGB3, ITGA5 and FN1. Binding to FN1 requires the presence of divalent cations (Ca(2+), Mg(2+) or Mn(2+)). The greatest amount of binding is seen in the presence of Mn(2+). Interacts with MATN1, MATN3, MATN4 and ACAN. Binds heparin, heparan sulfate and chondroitin sulfate. EDTA dimishes significantly its binding to ACAN and abolishes its binding to MATN3, MATN4 and chondroitin sulfate. Interacts with collagen I, II and IX, and interaction with these collagens is dependent on the presence of zinc ions. Interacts with ADAMTS12. Interacts with ITGA7 (By similarity).

Family&Domains:

The cell attachment motif mediates the attachment to chondrocytes. It mediates the induction of both the IAP family of survival proteins and the antiapoptotic response.

The TSP C-terminal domain mediates interaction with FN1 and ACAN.

Each of the eight TSP type-3 repeats binds two calcium ions. The TSP C-terminal domain binds three calcium ions.

Belongs to the thrombospondin family.

Research Fields

· Cellular Processes > Transport and catabolism > Phagosome.   (View pathway)

· Cellular Processes > Cellular community - eukaryotes > Focal adhesion.   (View pathway)

· Environmental Information Processing > Signal transduction > PI3K-Akt signaling pathway.   (View pathway)

· Environmental Information Processing > Signaling molecules and interaction > ECM-receptor interaction.   (View pathway)

· Human Diseases > Infectious diseases: Parasitic > Malaria.

· Human Diseases > Infectious diseases: Viral > Human papillomavirus infection.

References

1). C1QA and COMP: plasma-based biomarkers for early diagnosis of pancreatic neuroendocrine tumors. Scientific reports, 2023 (PubMed: 38030709) [IF=4.6]

Application: WB    Species: Human    Sample:

Figure 5 Validation of potential protein targets. Western blot profiling and densitometric analysis of final selected proteins (A). Densitometric analysis of (B) C1QA (p = 0.001, 0.03, 0.0013); (C) COMP protein (p = 0.011, 0.019), (D) HSP90B1, (E) ITGA2B/CD41, (F) FN1, (G, H) Sandwich ELISA for C1QA binding analysis (I) ROC curve analysis for plasma C1QA levels in Grade I PanNET vs controls (J, K) Sandwich ELISA for COMP analysis (I) ROC curve analysis for plasma COMP levels in Grade I PanNET vs controls.

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