COMP blocking peptide

COMP Antibody (Center) Blocking Peptide

• Gene Names: COMP; MED; EDM1; EPD1; TSP5; PSACH; THBS5
• Synonyms: COMP; COMP Antibody (Center) Blocking Peptide; Cartilage oligomeric matrix protein; Thrombospondin-5; TSP5; COMP blocking peptide

• Specificity: The synthetic peptide sequence used to generate the antibody was selected from the Center region of human COMP. A 10 to 100 fold molar excess to antibody is recommended. Precise conditions should be optimized for a particular assay.
• Form/Format: Synthetic peptide was lyophilized with 100% acetonitrile and is supplied as a powder. Reconstitute with 0.1 ml DI water for a final concentration of 1 mg/ml.
• Sequence Length: 757

• Cellular Location: Secreted, extracellular space, extracellular matrix
• Tissue Location: 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.
• Preparation and Storage: Maintain refrigerated at 2-8 degree C for up to 6 months. For long term storage store at -20 degree C.

Related Product Information for COMP blocking peptide

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).

NCBI and Uniprot Product Information

• NCBI GI #: 209572601
• NCBI GeneID: 1311
• UniProt Accession #: P49747; O14592; Q16388; Q16389; Q2NL86; Q8N4T2; B4DKJ3
• Molecular Weight: 77,214 Da
• NCBI Official Full Name: Cartilage oligomeric matrix protein
• NCBI Official Synonym Full Names: cartilage oligomeric matrix protein
• NCBI Official Symbol: COMP
• NCBI Official Synonym Symbols: MED; EDM1; EPD1; TSP5; PSACH; THBS5
• NCBI Protein Information: cartilage oligomeric matrix protein
• UniProt Protein Name: Cartilage oligomeric matrix protein
• Protein Family: Complexin
• UniProt Gene Name: COMP
• UniProt Synonym Gene Names: COMP; TSP5
• UniProt Entry Name: COMP_HUMAN

NCBI Description

The protein encoded by this gene is a noncollagenous extracellular matrix (ECM) protein. It consists of five identical glycoprotein subunits, each with EGF-like and calcium-binding (thrombospondin-like) domains. Oligomerization results from formation of a five-stranded coiled coil and disulfides. Binding to other ECM proteins such as collagen appears to depend on divalent cations. Contraction or expansion of a 5 aa aspartate repeat and other mutations can cause pseudochondroplasia (PSACH) and multiple epiphyseal dysplasia (MED). [provided by RefSeq, Jul 2016]

Uniprot Description

COMP: 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. Defects in COMP are the cause of multiple epiphyseal dysplasia type 1 (EDM1). EDM is a generalized skeletal dysplasia associated with significant morbidity. Joint pain, joint deformity, waddling gait, and short stature are the main clinical signs and symptoms. EDM is broadly categorized into the more severe Fairbank and the milder Ribbing types. Defects in COMP are the cause of pseudoachondroplasia (PSACH). PSAC is a dominantly inherited chondrodysplasia characterized by short stature and early-onset osteoarthrosis. PSACH is more severe than EDM1 and is recognized in early childhood. Belongs to the thrombospondin family.

Protein type: Secreted; Secreted, signal peptide

Chromosomal Location of Human Ortholog: 19p13.1

Cellular Component: extracellular matrix; extracellular region; extracellular space

Molecular Function: calcium ion binding; collagen binding; extracellular matrix structural constituent; heparan sulfate proteoglycan binding; heparin binding; protease binding; protein binding

Biological Process: extracellular matrix organization and biogenesis; limb development; negative regulation of apoptosis; organ morphogenesis; skeletal development

Disease: Epiphyseal Dysplasia, Multiple, 1; Pseudoachondroplasia