Human Cystatin-A ELISA Kit | CSTA elisa kit

Human Cystatin-A ELISA Kit

Cat. Num. AAA762269

• Gene Names: CSTA; AREI; PSS4; STF1; STFA
• Reactivity: Human
• Synonyms: Cystatin-A; Human Cystatin-A ELISA Kit; CSTA/Cystatin-A/Keratolinin/Stefin A//STF1/cystatin A/cystatin AS/Cystatin-AS/STFA/Stefin-A; CSTA elisa kit

• Reactivity: Human
• Sequence Length: 98

• Samples: Serum, plasma and other biological fluids.
• Assay Type: Sandwich ELISA, Double Antibody
• Detection Range: 0.313-20ng/ml
• Sensitivity: 0.188ng/ml
• 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

Typical Standard Curve

Related Product Information for CSTA elisa kit

Principle of the Assay||This kit was based on sandwich enzyme-linked immune-sorbent assay technology. Anti-human CSTAantibody was pre-coated onto 96-well plates. And the biotin conjugated anti-human CSTA antibody was used as detection antibodies. The standards, test samples and biotin conjugated detection antibody were added to the wells subsequently, and wash 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 human CSTA amount of sample captured in plate. Read the O.D. absorbance at 450nm in a microplate reader, and then the concentration ofhuman CSTAcan be calculated.

NCBI and Uniprot Product Information

• NCBI GI #: 4885165
• NCBI GeneID: 1475
• NCBI Accession #: NP_005204.1
• NCBI GenBank Nucleotide #: NM_005213.3
• Molecular Weight: 11,006 Da
• NCBI Official Full Name: cystatin-A
• NCBI Official Synonym Full Names: cystatin A
• NCBI Official Symbol: CSTA
• NCBI Official Synonym Symbols: AREI; PSS4; STF1; STFA
• NCBI Protein Information: cystatin-A
• UniProt Protein Name: Cystatin-A
• Protein Family: Cystatin
• UniProt Gene Name: CSTA
• UniProt Synonym Gene Names: STF1; STFA
• UniProt Entry Name: CYTA_HUMAN

NCBI Description

The cystatin superfamily encompasses proteins that contain multiple cystatin-like sequences. Some of the members are active cysteine protease inhibitors, while others have lost or perhaps never acquired this inhibitory activity. There are three inhibitory families in the superfamily, including the type 1 cystatins (stefins), type 2 cystatins, and kininogens. This gene encodes a stefin that functions as a cysteine protease inhibitor, forming tight complexes with papain and the cathepsins B, H, and L. The protein is one of the precursor proteins of cornified cell envelope in keratinocytes and plays a role in epidermal development and maintenance. Stefins have been proposed as prognostic and diagnostic tools for cancer. [provided by RefSeq, Jul 2008]

Uniprot Description

CSTA: This is an intracellular thiol proteinase inhibitor. Has an important role in desmosome-mediated cell-cell adhesion in the lower levels of the epidermis. Defects in CSTA are the cause of ichthyosis exfoliative autosomal recessive ichthyosis bullosa of Siemens-like (AREI). A form of congenital exfoliative ichthyosis, sharing some features with ichthyosis bullosa of Siemens and annular epidermolytic ichthyosis. AREI presents shortly after birth as dry, scaly skin over most of the body with coarse peeling of non- erythematous skin on the palms and soles, which is exacerbated by excessive moisture and minor trauma. Electron microscopy analysis of skin biopsies, reveals mostly normal-appearing upper layers of the epidermis, but prominent intercellular edema of the basal and suprabasal cell layers with aggregates of tonofilaments in the basal keratinocytes. Belongs to the cystatin family.

Chromosomal Location of Human Ortholog: 3q21

Cellular Component: cornified envelope; cytoplasm; extracellular space; nucleus

Molecular Function: cysteine protease inhibitor activity; protease binding; protein binding, bridging; structural molecule activity

Biological Process: cell-cell adhesion; keratinocyte differentiation; negative regulation of peptidase activity; negative regulation of proteolysis; peptide cross-linking

Disease: Exfoliative Ichthyosis, Autosomal Recessive, Ichthyosis Bullosa Of Siemens-like