Anti-Stefin B/CSTB Antibody Picoband®

About this product

Boster Bio Anti-Stefin B/CSTB Antibody Picoband® catalog # PB9565. Tested in ELISA, Flow Cytometry, IF, IHC ICC, WB applications. This antibody reacts with Human. The brand Picoband indicates this is a premium antibody that guarantees superior quality, high affinity, and strong signals with minimal background in Western blot applications. Only our best-performing antibodies are designated as Picoband, ensuring unmatched performance.

Specifications

Catalog number

PB9565

Size / count

100 µg/Vial

Dry ice

No

Hazardous

No

Discontinued

No

Background

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.

Synonyms

Cystatin-B; CPI-B; Liver thiol proteinase inhibitor; Stefin-B; CSTB; CST6, STFB

Gene Name

CSTB

Gene ID

1476

UniProt

P04080

Host

Rabbit

Reactivity

Human

Cross Reactivity

No cross-reactivity with other proteins

Immunogen

E. coli-derived human Stefin B recombinant protein (Position: M1-F98) . Human Stefin B shares 78.6 % amino acid (aa) sequence identity with both mouse and rat Stefin B.

Clonality

Polyclonal

Tissue Specificity

Expressed in the skin throughout the epidermis. .

Applications

ELISA, Flow Cytometry, IF, IHC, ICC, WB

Field of Research

Cell Biology, Protease Inhibitors, Proteolysis/Ubiquitin

Purification

Immunogen affinity purified.

Concentration

Adding 0.2 ml of distilled water will yield a concentration of 500 μg/ml.

Form

Lyophilized

Reconstitution

Add 0.2ml of distilled water will yield a concentration of 500ug/ml.

Function

This is an intracellular thiol proteinase inhibitor. Tightly binding reversible inhibitor of cathepsins L, H and B.

References & Citations

1. Alakurtti, K., Weber, E., Rinne, R., Theil, G., de Haan, G.-J., Lindhout, D., Salmikangas, P., Saukko, P., Lahtinen, U., Lehesjoki, A.-E. Loss of lysosomal association of cystatin B proteins representing progressive myoclonus epilepsy, EPM1, mutations. Europ. J. Hum. Genet. 13: 208-215, 2005. Note: Erratum: Europ. J. Hum. Genet. 13: 264 only, 2005. 2. Antonarakis, S. Personal Communication. Geneva, Switzerland 4/8/1997. 3. Bespalova, I. N., Adkins, S., Pranzatelli, M., Burmeister, M. Novel cystatin B mutation and diagnostic PCR assay in an Unverricht-Lundborg progressive myoclonus epilepsy patient. Am. J. Med. Genet. 74: 467-471, 1997.

Storage Conditions

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.

Calculated Molecular Weight

11140 MW

Observed Molecular Weight

11 kDa

Specificity

No cross reactivity with other proteins.

Applications Notes

6

Gene Name Synonym

Cystatin-B

Subcellular Location

Cytoplasm . Nucleus .

Sequence Similarities

Belongs to the cystatin family.

Protein Name

Cystatin-B

Isotype

Rabbit IgG

Contents

Each vial contains 5mg BSA, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg NaN3.