Cystatin B (CSTB), also called STFB, is a small protein that is a member of the superfamily of cysteine protease inhibitors. It has been isolated from human spleen and liver and its amino acid sequence has been fully determined. The cystatin B gene is located on 21q22.3. It is widely distributed and is localized mostly intracellularly, but has been found extracellularly. The protein is able to form a dimer stabilized by noncovalent forces, inhibiting papain and cathepsins l, h and b. Its role is thought to be as a protector against the proteinases leaking from lysosomes. A cystatin B multiprotein complex might have a specific cerebellar function, and that the loss of this function might contribute to the etiopathogenesis of EPM1. Upon differentiation to myotubes, CSTB becomes excluded from the nucleus and lysosomes, suggesting that the subcellular distribution of CSTB is dependent on the differentiation status of the cell.
Formulation
0.5mg/ml if reconstituted with 0.2ml sterile DI water
Host
Rabbit
Immunogen Region
Amino acids 1-98 of human CSTB were used as the immunogen for the Cystatin B antibody.
Isotype
IgG
Predicted Reactivity
Human
Reactivity
Human
Recombinant
No
Uniprot
P04080
Format
Antigen affinity purified
Purification
Antigen affinity
Storage
After reconstitution, the Cystatin B antibody can be stored for up to one month at 4°C. For long-term, aliquot and store at -20°C. Avoid repeated freezing and thawing.
Applications
WB, IHC-P, ELISA
Dilution
Western blot: 0.1-0.5ug/ml,Immunohistochemistry (FFPE): 0.5-1ug/ml