Human Cystatin SN/CST1 EZ-Set™ ELISA Kit (DIY Antibody Pairs)

Cystatin-SN is a protein that in humans is encoded by the CST1 gene. 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 the kininogens. The type 2 cystatin proteins are a class of cysteine proteinase inhibitors found in a variety of human fluids and secretions, where they appear to provide protective functions. The cystatin locus on chromosome 20 contains the majority of the type 2 cystatin genes and pseudogenes. This gene is located in the cystatin locus and encodes a cysteine proteinase inhibitor found in saliva, tears, urine, and seminal fluid.

Human saliva appears to contain several cysteine proteinase inhibitors that are immunologically related to cystatin S but that differ in their specificity due to amino acid sequence differences. Cystatin SN, with a pI of 7.5, is a much better inhibitor of papain and dipeptidyl peptidase I than is cystatin S, although both inhibit ficin equally well.

Catalog number Description Quantity Storage of opened/reconstituted material EZ1654-CA Mouse anti-human Cystatin SN/CST1 monoclonal antibody (Capture Antibody) 500 μl, 4 μg/mL (recommended dilution 1:100) Store undiluted at 4°C for 1 month or at -20°C for 3 months provided this is within the expiration date of the kit. EZ1654-DA Biotinylated goat anti-human Cystatin SN/CST1 polyclonal antibody (Detection Antibody) 500 μl (recommended dilution 1:100) AR1103 Avidin-Biotin-Peroxidase Complex (ABC) 500 μl (recommended dilution 1:100) EZ1654-ST Lyophilized recombinant human Cystatin SN/CST1 standard 10 ng/tubex3 Discard the standard stock solution after 12 hours at 4°C. May be stored at -20°C for 48 hours provided this is within the expiration date of the kit. Catalog number Description Quantity Storage of opened/reconstituted material EZ1654-CA Mouse anti-human Cystatin SN/CST1 monoclonal antibody (Capture Antibody) 500 μl, 4 μg/mL (recommended dilution 1:100) Store undiluted at 4°C for 1 month or at -20°C for 3 months provided this is within the expiration date of the kit. EZ1654-DA Biotinylated goat anti-human Cystatin SN/CST1 polyclonal antibody (Detection Antibody) 500 μl (recommended dilution 1:100) AR1103 Avidin-Biotin-Peroxidase Complex (ABC) 500 μl (recommended dilution 1:100) EZ1654-ST Lyophilized recombinant human Cystatin SN/CST1 standard 10 ng/tubex3 Discard the standard stock solution after 12 hours at 4°C. May be stored at -20°C for 48 hours provided this is within the expiration date of the kit. Catalog number Description Quantity Storage of opened/reconstituted material Catalog number Description Quantity Storage of opened/reconstituted material EZ1654-CA Mouse anti-human Cystatin SN/CST1 monoclonal antibody (Capture Antibody) 500 μl, 4 μg/mL (recommended dilution 1:100) Store undiluted at 4°C for 1 month or at -20°C for 3 months provided this is within the expiration date of the kit. EZ1654-CA Mouse anti-human Cystatin SN/CST1 monoclonal antibody (Capture Antibody) 500 μl, 4 μg/mL (recommended dilution 1:100) Store undiluted at 4°C for 1 month or at -20°C for 3 months provided this is within the expiration date of the kit. EZ1654-DA Biotinylated goat anti-human Cystatin SN/CST1 polyclonal antibody (Detection Antibody) 500 μl (recommended dilution 1:100) EZ1654-DA Biotinylated goat anti-human Cystatin SN/CST1 polyclonal antibody (Detection Antibody) 500 μl (recommended dilution 1:100) AR1103 Avidin-Biotin-Peroxidase Complex (ABC) 500 μl (recommended dilution 1:100) AR1103 Avidin-Biotin-Peroxidase Complex (ABC) 500 μl (recommended dilution 1:100) EZ1654-ST Lyophilized recombinant human Cystatin SN/CST1 standard 10 ng/tubex3 Discard the standard stock solution after 12 hours at 4°C. May be stored at -20°C for 48 hours provided this is within the expiration date of the kit. EZ1654-ST Lyophilized recombinant human Cystatin SN/CST1 standard 10 ng/tubex3 Discard the standard stock solution after 12 hours at 4°C. May be stored at -20°C for 48 hours provided this is within the expiration date of the kit.

Store at 4°C for 6 months, at -20°C for 12 months. Avoid multiple freeze-thaw cycles (Ships with gel ice, can store for up to 3 days in room temperature. Freeze upon receiving.)

Concentration (pg/ml) 0 31.2 62.5 125 250 500 1000 2000 O.D. 0.082 0.148 0.199 0.325 0.472 0.769 1.218 1.868 Concentration (pg/ml) 0 31.2 62.5 125 250 500 1000 2000 O.D. 0.082 0.148 0.199 0.325 0.472 0.769 1.218 1.868 Concentration (pg/ml) 0 31.2 62.5 125 250 500 1000 2000 Concentration (pg/ml) 0 31.2 62.5 125 250 500 1000 2000 O.D. 0.082 0.148 0.199 0.325 0.472 0.769 1.218 1.868 O.D. 0.082 0.148 0.199 0.325 0.472 0.769 1.218 1.868

1. Microplate reader in standard size. 2. Automated plate washer. 3. Incubator. 4. Adjustable pipettes and pipette tips. Multichannel pipettes are recommended in the condition of large amount of samples in the detection. 5. Clean tubes and Eppendorf tubes. 6. 96 well microplate (Cat# AR1100) 7. Plate Sealers. 8. Capture Antibody Diluent: PBS. 9. Reagent Diluent: 1% BSA in PBS, pH 7.2-7.4, 0.2 μm filtered. 10. Substrate Solution: Tetramethylbenzidine (Cat# AR1104) 11. Stop Solution: 2 N H2SO4 (Cat# AR1105) 12. Wash Buffer (PBS and PBS-T) . Recipes: PBS: 8g NaCl, 0.2g KCl, 1.15g Na2HPO4, 0.2g KH2PO4, adjust the total volume to 1 L with distilled water, pH 7.2-7.4, 0.2 μm filtered. PBS-T: 0.1% Tween® 20 in PBS, pH 7.2-7.4. *Item 6 – 12 are included in the EZ Set Accessory Kit (EZA001)