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For research use only.

Verified Samples Verified Samples in WB: THP-1
Verified Samples in IF: HeLa
Dilution WB 1:500-1:2000,  IF 1:50-1:200
Isotype IgG
Host Rabbit
Reactivity Human,  Rat
Applications WB,  IF
Clonality Polyclonal
Immunogen Recombinant fusion protein of human CSTA (NP_005204.1).
Abbre CSTA
Synonyms AREI,  CSTA,  PSS4,  STF1,  STFA
Swissprot
Calculated MW 11 kDa
Observed MW 13 kDa
The actual band is not consistent with the expectation.

Western blotting is a method for detecting a certain protein in a complex sample based on the specific binding of antigen and antibody. Different proteins can be divided into bands based on different mobility rates. The mobility is affected by many factors, which may cause the observed band size to be inconsistent with the expected size. The common factors include:

1. Post-translational modifications: For example, modifications such as glycosylation, phosphorylation, methylation, and acetylation will increase the molecular weight of the protein.

2. Splicing variants: Different expression patterns of various mRNA splicing bodies may produce proteins of different sizes.

3. Post-translational cleavage: Many proteins are first synthesized into precursor proteins and then cleaved to form active forms, such as COL1A1.

4. Relative charge: the composition of amino acids (the proportion of charged amino acids and uncharged amino acids).

5. Formation of multimers: For example, in protein dimer, strong interactions between proteins can cause the bands to be larger. However, the use of reducing conditions can usually avoid the formation of multimers.

If a protein in a sample has different modified forms at the same time, multiple bands may be detected on the membrane.

Cellular Localization Cytoplasm.
Concentration 1 mg/mL
Buffer Phosphate buffered solution, pH 7.4, containing 0.05% stabilizer and 50% glycerol.
Purification Method Affinity purification
Research Areas Cancer,  Cell Biology,  Signal Transduction
Conjugation Unconjugated
Storage Store at -20°C Valid for 12 months. Avoid freeze / thaw cycles.
Shipping The product is shipped with ice pack,upon receipt,store it immediately at the temperature recommended.
background 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.
Other Clones

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Unconjugated

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