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For research use only.

Verified Samples Verified Samples in WB: A375
Verified Samples in IF: C6, L929, U-2OS
Dilution WB 1:500-1:2000,  IF 1:50-1:100
Isotype IgG
Host Rabbit
Reactivity Human,  Mouse,  Rat
Applications WB,  IF
Clonality Polyclonal
Immunogen Recombinant fusion protein of human SPARC (NP_003109.1).
Synonyms BM-40,  OI17,  SPARC
Swissprot
Calculated MW 34 kDa
Observed MW 35 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 Secreted>extracellular space>extracellular matrix>basement membrane. In or around the basement membrane.
Concentration 1 mg/mL
Buffer PBS with 0.02% sodium azide, 50% glycerol, pH7.3.
Purification Method Affinity purification
Research Areas Cancer,  Cell Biology,  Cardiovascular,  Developmental Biology,  Signal Transduction,  Stem Cells
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 This gene encodes a cysteine-rich acidic matrix-associated protein. The encoded protein is required for the collagen in bone to become calcified but is also involved in extracellular matrix synthesis and promotion of changes to cell shape. The gene product has been associated with tumor suppression but has also been correlated with metastasis based on changes to cell shape which can promote tumor cell invasion. Three transcript variants encoding different isoforms have been found for this gene.
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Unconjugated

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