Cystatin B ELISA Kit, Human

Temporarily not available outside of China.

Cystatin B ELISA Kit, Human: 产品信息

Cystatin B ELISA Kit, Human
Solid Phase Sandwich ELISA (quantitative)
6.9 pg/mL
15.63-1000 pg/mL
Recognizes both recombinant and natural Human Cystatin B
Preparations of DPP7 at 10 ng/mL in a mid-range recombinant human CSTB control were assayed for interference. No significant interference was observed.
  Intra-assay Precision
Sample 1 2 3
N 20 20 20
Mean(pg/mL) 0.12 0.24 0.53
SD 0.01 0.01 0.03
CV(%) 5.8% 3.2% 6.0%
  Inter-assay Precision
Sample 1 2 3
N 20 20 20
Mean(pg/mL) 0.17 0.34 0.68
SD 0.02 0.03 0.06
CV(%) 10.0% 7.8% 9.6%
The recovery of Human CSTB spiked to different levels throughout the range of the assay in related matrices was evaluated.
serum (n=4)
Average % Recovery
  Recovery of detected
1:2 107%
1:4 98%
1:8 92%
1:16 99%
ELISA 试剂盒(即用型)组分
1. 96 well microplate coated with Capture Antibody
2. Detection Antibody conjugated to HRP
3. Standards
4. Wash Buffer Concentrate
5. Dilution Buffer Concentrate
6. Color Reagent A
7. Color Reagent B
8. Stop Solution
This Cystatin B ELISA Kit, Human is an enzyme-linked immunosorbent assay for the quantitative measurement of Human Cystatin B protein in Serum . It contains recombinant Human Cystatin B, and antibodies raised against the recombinant protein. This ELISA kit is complete and ready-to-use.
This ELISA Kit is shipped at ambient temperature.
Unopened Kit: Store at 2 - 8℃
Opened/Reconstituted Reagents: Please refer to CoA

Cystatin B ELISA Kit, Human: 图片

This standard curve is only for demonstration purposes. A standard curve should be generated for each assay.
This assay recognizes both recombinant and natural Human CSTB. The factors listed above were prepared at 50 ng/mL in dilution buffer and assayed for cross-reactivity. No cross-reactivity was observed.
Preparations of DPP7 at 10 ng/mL in a mid-range recombinant human CSTB control were assayed for interference. No significant interference was observed.

Cystatin B ELISA Kit, Human: 别称

CST6 ELISA Kit, Human; EPM1 ELISA Kit, Human; EPM1A ELISA Kit, Human; PME ELISA Kit, Human; STFB ELISA Kit, Human; ULD ELISA Kit, Human

Cystatin B 背景信息

Cystatin-B, also known as CPI-B, Liver thiol proteinase inhibitor, Stefin-B, CSTB and CST6, is a cytoplasm and nucleus protein which belongs to thecystatin family. Cystatin-B / CSTB is an intracellular thiol proteinase inhibitor. Tightly binding reversible inhibitor of cathepsins L, H and B. Cystatin-B / CSTB is able to form a dimer stabilized by noncovalent forces, inhibiting papain and cathepsins l, h and b. Cystatin-B / CSTB is also thought to play a role in protecting against the proteases leaking from lysosomes. Defects in Cystatin-B / CSTB are the cause of progressive myoclonic epilepsy type 1 (EPM1) which is an autosomal recessive disorder characterized by severe, stimulus-sensitive myoclonus and tonic-clonic seizures. The cystatins are a family of cysteine protease inhibitors with homology to chicken cystatin. Cystatins are physiological inhibitors of cysteine proteinases which are widely distributed in human tissues and fluids. Cystatins typically comprise about 115 amino acids, are largely acidic, contain four conserved cysteine residues known to form two disulfide bonds. Cystatins may be glycosylated and / or phosphorylated, with similarity to fetuins, kininogens, stefins, histidine-rich glycoproteins and cystatin-related proteins. Some of the members are active cysteine protease inhibitors, while others have lost or perhaps never acquired inhibitory activity. Cystatins mainly inhibit peptidases belonging to peptidase families C1 (papain family) and C13 (legumain family).
cystatin B (stefin B)
  • Ritonja A., et al.,(1985), Amino acid sequence of the intracellular cysteine proteinase inhibitor cystatin B from human liver. Biochem. Biophys. Res. Commun. 131:1187-1192.
  • Pennacchio L.A., et al., (1996), Mutations in the gene encoding cystatin B in progressive myoclonus epilepsy (EPM1).Science 271:1731-1734.
  • Hattori M., et al.,(2000), The DNA sequence of human chromosome 21.Nature 405:311-319.
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