Human Asporin ELISA Kit | ASPN elisa kit

Human Asporin ELISA Kit

Cat. Num. AAA760704

• Gene Names: ASPN; OS3; PLAP1; PLAP-1; SLRR1C
• Reactivity: Human
• Synonyms: Asporin; Human Asporin ELISA Kit; ASPN/OS3/PLAP-1/PLAP1/SLRR1C/Periodontal ligament-associated protein 1; ASPN elisa kit

• Reactivity: Human
• Specificity: This assay has high sensitivity and excellent specificity for detection of ASPN. No significant cross-reactivity or interference between ASPN and analogues was observed.
• Sequence Length: 379

• Samples: Serum, plasma, tissue homogenates and other biological fluids
• Assay Type: Quantitative Sandwich
• Detection Range: 0.313-20ng/ml
• Sensitivity: 0.188ng/ml
• Intra-assay Precision: CV<8%
• Inter-assay Precision: CV<10%
• Preparation and Storage: Store at 4 degree C if kit is to be used within 1 week. Stable for 6 months (if micro ELISA Plate, Lyophilized Standard and Concentrated Biotinylated Detection Protein stored at-20 degree C. Other components at 2-8 degree C). Stable for 12 months (if the entire kit is stored at-20 degree C).

Typical Testing Data/Standard Curve (for reference only)

Related Product Information for ASPN elisa kit

Principle of the Assay: This kit was based on sandwich enzyme-linked immune-sorbent assay technology. Capture antibody was pre-coated onto 96-well plates. And the biotin conjugated antibody was used as detection antibodies. The standards, test samples and biotin conjugated detection antibody were added to the wells subsequently, and washed with wash buffer. HRP-Streptavidin was added and unbound conjugates were washed away with wash buffer. TMB substrates were used to visualize HRP enzymatic reaction. TMB was catalyzed by HRP to produce a blue color product that changed into yellow after adding acidic stop solution. The density of yellow is proportional to the target amount of sample captured in plate. Read the O.D. absorbance at 450nm in a microplate reader, and then the concentration of target can be calculated.

NCBI and Uniprot Product Information

• NCBI GI #: 13625797
• NCBI GeneID: 54829
• Molecular Weight: 43,417 Da
• NCBI Official Full Name: asporin
• NCBI Official Synonym Full Names: asporin
• NCBI Official Symbol: ASPN
• NCBI Official Synonym Symbols: OS3; PLAP1; PLAP-1; SLRR1C
• NCBI Protein Information: asporin
• UniProt Protein Name: Asporin
• Protein Family: Asporin
• UniProt Gene Name: ASPN
• UniProt Synonym Gene Names: PLAP1; SLRR1C; PLAP-1
• UniProt Entry Name: ASPN_HUMAN

NCBI Description

This gene encodes a cartilage extracellular protein that is member of the small leucine-rich proteoglycan family. The encoded protein may regulate chondrogenesis by inhibiting transforming growth factor-beta 1-induced gene expression in cartilage. This protein also binds collagen and calcium and may induce collagen mineralization. Polymorphisms in the aspartic acid repeat region of this gene are associated with a susceptibility to osteoarthritis, and also with intervertebral disc disease. Alternative splicing of this gene results in multiple transcript variants.[provided by RefSeq, Jul 2014]

Uniprot Description

ASPN: Negatively regulates periodontal ligament (PDL) differentiation and mineralization to ensure that the PDL is not ossified and to maintain homeostasis of the tooth-supporting system. Inhibits BMP2-induced cytodifferentiation of PDL cells by preventing its binding to BMPR1B/BMP type-1B receptor, resulting in inhibition of BMP-dependent activation of SMAD proteins. Critical regulator of TGF-beta in articular cartilage and plays an essential role in cartilage homeostasis and osteoarthritis (OA) pathogenesis. Negatively regulates chondrogenesis in the articular cartilage by blocking the TGF- beta/receptor interaction on the cell surface and inhibiting the canonical TGF-beta/Smad signal. Binds calcium and plays a role in osteoblast-driven collagen biomineralization activity. Genetic variations in ASPN are associated with susceptibility to osteoarthritis type 3 (OS3); also known as osteoarthritis of knee/hip. Osteoarthritis is a degenerative disease of the joints characterized by degradation of the hyaline articular cartilage and remodeling of the subchondral bone with sclerosis. Clinical symptoms include pain and joint stiffness often leading to significant disability and joint replacement. Susceptibility to osteoarthritis is conferred by a triplet repeat expansion polymorphism. ASPN allele having 14 aspartic acid repeats in the N-terminal region of the protein (D14), is overrepresented relative to the common allele having 13 aspartic acid repeats (D13). The frequency of the D14 allele increases with disease severity. The D14 allele is also overrepresented in individuals with hip osteoarthritis. Defects in ASPN are a cause of susceptibility to intervertebral disk disease (IDD). A common musculo- skeletal disorder caused by degeneration of intervertebral disks of the lumbar spine. It results in low-back pain and unilateral leg pain. Susceptibility to intervertebral disk disease, particularly lumbar disk degeneration, is conferred by a triplet repeat expansion polymorphism. ASPN allele having 14 aspartic acid repeats in the N-terminal region of the protein (D14), is associated with the disorder in some populations (PubMed:18304494). Belongs to the small leucine-rich proteoglycan (SLRP) family. SLRP class I subfamily.

Protein type: Secreted, signal peptide; Secreted; Extracellular matrix

Chromosomal Location of Human Ortholog: 9q22

Cellular Component: cytoplasm; extracellular matrix; proteinaceous extracellular matrix

Molecular Function: calcium ion binding; collagen binding; protein kinase inhibitor activity

Biological Process: bone mineralization; cytokine and chemokine mediated signaling pathway; negative regulation of JAK-STAT cascade; negative regulation of protein kinase activity; negative regulation of transforming growth factor beta receptor signaling pathway

Disease: Intervertebral Disc Disease; Osteoarthritis Susceptibility 3