Recombinant SP1 Monoclonal Antibody (AN301966L)
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For research use only.
| Verified Samples |
Verified Samples in WB: HeLa, K562 Verified Samples in IHC: Human colon cancer, Human gastric cancer, Mouse cerebrum, Mouse testis, Rat liver |
| Dilution | WB 1:1000, IHC 1:50 |
| Isotype | IgG, κ |
| Host | Rabbit |
| Reactivity | Human, Rat, Mouse |
| Applications | WB, IHC |
| Clonality | Monoclonal;Recombinant |
| Immunogen | Recombinant human SP1 fragment |
| Abbre | SP1 |
| Synonyms | Specificity protein, Transcription factor Sp, SP1, SP 1, Sp1 transcription factor, Specificity protein 1, Transcription factor Sp1, TSFP 1, TSFP1 |
| Swissprot | |
| Calculated MW | 81 kDa |
| Observed MW |
100 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, Nucleus |
| Concentration | 1 mg/mL |
| Buffer | PBS, 50% glycerol, 0.05% Proclin 300, 0.05% protein protectant. |
| Purification Method | Protein A purified |
| Research Areas | Epigenetics and Nuclear Signaling, Stem Cells, Metabolism |
| Clone No. | A682 |
| Conjugation | Unconjugated |
| Storage | Store at -20°C Valid for 12 months. Avoid freeze / thaw cycles. |
| Shipping | Ice bag |
| background | Specificity protein 1 (SP1) is a ubiquitously expressed transcription factor belonging to the family of C2H2-type zinc finger containing DNA-binding proteins. SP1 binds GC-rich motifs with high affinity and regulates the expression of numerous mammalian genes. It interacts with many other transcription factors, such as c-Myc, EGR1, and Stat1, and with basal transcription machinery components. SP1 interacts with chromatin-modifying factors, such as histone deacetylases (HDACs) and p300 in chromatin remodeling. Transcriptional activity and stability of SP1 are regulated by post-translational modification, including phosphorylation, acetylation, ubiquitination, and glycosylation. Glycosylation of SP1 following insulin treatment leads to increased nuclear localization, while glucagon treatment increases cytoplasmic SP1 levels. Investigators have found high levels of SP1 in patients with Alzheimer's disease. |
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Unconjugated
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